Release 2025.08.20

Created by: bashonly

:ci skip all

.github/ISSUE_TEMPLATE/1_broken_site.yml

@@ -2,13 +2,11 @@ name: Broken site support
 description: Report issue with yt-dlp on a supported site
 labels: [triage, site-bug]
 body:
-  - type: checkboxes
+  - type: markdown
     attributes:
-      label: DO NOT REMOVE OR SKIP THE ISSUE TEMPLATE
-      description: Fill all fields even if you think it is irrelevant for the issue
-      options:
-        - label: I understand that I will be **blocked** if I *intentionally* remove or skip any mandatory\* field
-          required: true
+      value: |
+        > [!IMPORTANT]
+        > Not providing the required (*) information or removing the template will result in your issue being closed and ignored.
   - type: checkboxes
     id: checklist
     attributes:
@@ -24,9 +22,7 @@ body:
           required: true
         - label: I've checked that all URLs and arguments with special characters are [properly quoted or escaped](https://github.com/yt-dlp/yt-dlp/wiki/FAQ#video-url-contains-an-ampersand--and-im-getting-some-strange-output-1-2839-or-v-is-not-recognized-as-an-internal-or-external-command)
           required: true
-        - label: I've searched [known issues](https://github.com/yt-dlp/yt-dlp/issues/3766) and the [bugtracker](https://github.com/yt-dlp/yt-dlp/issues?q=) for similar issues **including closed ones**. DO NOT post duplicates
-          required: true
-        - label: I've read the [guidelines for opening an issue](https://github.com/yt-dlp/yt-dlp/blob/master/CONTRIBUTING.md#opening-an-issue)
+        - label: I've searched [known issues](https://github.com/yt-dlp/yt-dlp/issues/3766), [the FAQ](https://github.com/yt-dlp/yt-dlp/wiki/FAQ), and the [bugtracker](https://github.com/yt-dlp/yt-dlp/issues?q=is%3Aissue%20-label%3Aspam%20%20) for similar issues **including closed ones**. DO NOT post duplicates
           required: true
         - label: I've read about [sharing account credentials](https://github.com/yt-dlp/yt-dlp/blob/master/CONTRIBUTING.md#are-you-willing-to-share-account-details-if-needed) and I'm willing to share it if required
   - type: input
@@ -47,6 +43,8 @@ body:
     id: verbose
     attributes:
       label: Provide verbose output that clearly demonstrates the problem
+      description: |
+        This is mandatory unless absolutely impossible to provide. If you are unable to provide the output, please explain why.
       options:
         - label: Run **your** yt-dlp command with **-vU** flag added (`yt-dlp -vU <your command line>`)
           required: true
@@ -63,14 +61,15 @@ body:
       placeholder: |
         [debug] Command-line config: ['-vU', 'https://www.youtube.com/watch?v=BaW_jenozKc']
         [debug] Encodings: locale cp65001, fs utf-8, pref cp65001, out utf-8, error utf-8, screen utf-8
-        [debug] yt-dlp version nightly@... from yt-dlp/yt-dlp [b634ba742] (win_exe)
-        [debug] Python 3.8.10 (CPython 64bit) - Windows-10-10.0.22000-SP0
-        [debug] exe versions: ffmpeg N-106550-g072101bd52-20220410 (fdk,setts), ffprobe N-106624-g391ce570c8-20220415, phantomjs 2.1.1
-        [debug] Optional libraries: Cryptodome-3.15.0, brotli-1.0.9, certifi-2022.06.15, mutagen-1.45.1, sqlite3-2.6.0, websockets-10.3
+        [debug] yt-dlp version nightly@... from yt-dlp/yt-dlp-nightly-builds [1a176d874] (win_exe)
+        [debug] Python 3.10.11 (CPython AMD64 64bit) - Windows-10-10.0.20348-SP0 (OpenSSL 1.1.1t  7 Feb 2023)
+        [debug] exe versions: ffmpeg 7.0.2 (setts), ffprobe 7.0.2
+        [debug] Optional libraries: Cryptodome-3.21.0, brotli-1.1.0, certifi-2024.08.30, curl_cffi-0.5.10, mutagen-1.47.0, requests-2.32.3, sqlite3-3.40.1, urllib3-2.2.3, websockets-13.1
         [debug] Proxy map: {}
-        [debug] Request Handlers: urllib, requests
-        [debug] Loaded 1893 extractors
-        [debug] Fetching release info: https://api.github.com/repos/yt-dlp/yt-dlp-nightly-builds/releases/latest
+        [debug] Request Handlers: urllib, requests, websockets, curl_cffi
+        [debug] Loaded 1838 extractors
+        [debug] Fetching release info: https://api.github.com/repos/yt-dlp/yt-dlp/releases/latest
+        Latest version: nightly@... from yt-dlp/yt-dlp-nightly-builds
         yt-dlp is up to date (nightly@... from yt-dlp/yt-dlp-nightly-builds)
         [youtube] Extracting URL: https://www.youtube.com/watch?v=BaW_jenozKc
         <more lines>

.github/ISSUE_TEMPLATE/2_site_support_request.yml

@@ -2,13 +2,11 @@ name: Site support request
 description: Request support for a new site
 labels: [triage, site-request]
 body:
-  - type: checkboxes
+  - type: markdown
     attributes:
-      label: DO NOT REMOVE OR SKIP THE ISSUE TEMPLATE
-      description: Fill all fields even if you think it is irrelevant for the issue
-      options:
-        - label: I understand that I will be **blocked** if I *intentionally* remove or skip any mandatory\* field
-          required: true
+      value: |
+        > [!IMPORTANT]
+        > Not providing the required (*) information or removing the template will result in your issue being closed and ignored.
   - type: checkboxes
     id: checklist
     attributes:
@@ -24,9 +22,7 @@ body:
           required: true
         - label: I've checked that none of provided URLs [violate any copyrights](https://github.com/yt-dlp/yt-dlp/blob/master/CONTRIBUTING.md#is-the-website-primarily-used-for-piracy) or contain any [DRM](https://en.wikipedia.org/wiki/Digital_rights_management) to the best of my knowledge
           required: true
-        - label: I've searched [known issues](https://github.com/yt-dlp/yt-dlp/issues/3766) and the [bugtracker](https://github.com/yt-dlp/yt-dlp/issues?q=) for similar issues **including closed ones**. DO NOT post duplicates
-          required: true
-        - label: I've read the [guidelines for opening an issue](https://github.com/yt-dlp/yt-dlp/blob/master/CONTRIBUTING.md#opening-an-issue)
+        - label: I've searched the [bugtracker](https://github.com/yt-dlp/yt-dlp/issues?q=is%3Aissue%20-label%3Aspam%20%20) for similar requests **including closed ones**. DO NOT post duplicates
           required: true
         - label: I've read about [sharing account credentials](https://github.com/yt-dlp/yt-dlp/blob/master/CONTRIBUTING.md#are-you-willing-to-share-account-details-if-needed) and am willing to share it if required
   - type: input
@@ -59,6 +55,8 @@ body:
     id: verbose
     attributes:
       label: Provide verbose output that clearly demonstrates the problem
+      description: |
+        This is mandatory unless absolutely impossible to provide. If you are unable to provide the output, please explain why.
       options:
         - label: Run **your** yt-dlp command with **-vU** flag added (`yt-dlp -vU <your command line>`)
           required: true
@@ -75,14 +73,15 @@ body:
       placeholder: |
         [debug] Command-line config: ['-vU', 'https://www.youtube.com/watch?v=BaW_jenozKc']
         [debug] Encodings: locale cp65001, fs utf-8, pref cp65001, out utf-8, error utf-8, screen utf-8
-        [debug] yt-dlp version nightly@... from yt-dlp/yt-dlp [b634ba742] (win_exe)
-        [debug] Python 3.8.10 (CPython 64bit) - Windows-10-10.0.22000-SP0
-        [debug] exe versions: ffmpeg N-106550-g072101bd52-20220410 (fdk,setts), ffprobe N-106624-g391ce570c8-20220415, phantomjs 2.1.1
-        [debug] Optional libraries: Cryptodome-3.15.0, brotli-1.0.9, certifi-2022.06.15, mutagen-1.45.1, sqlite3-2.6.0, websockets-10.3
+        [debug] yt-dlp version nightly@... from yt-dlp/yt-dlp-nightly-builds [1a176d874] (win_exe)
+        [debug] Python 3.10.11 (CPython AMD64 64bit) - Windows-10-10.0.20348-SP0 (OpenSSL 1.1.1t  7 Feb 2023)
+        [debug] exe versions: ffmpeg 7.0.2 (setts), ffprobe 7.0.2
+        [debug] Optional libraries: Cryptodome-3.21.0, brotli-1.1.0, certifi-2024.08.30, curl_cffi-0.5.10, mutagen-1.47.0, requests-2.32.3, sqlite3-3.40.1, urllib3-2.2.3, websockets-13.1
         [debug] Proxy map: {}
-        [debug] Request Handlers: urllib, requests
-        [debug] Loaded 1893 extractors
-        [debug] Fetching release info: https://api.github.com/repos/yt-dlp/yt-dlp-nightly-builds/releases/latest
+        [debug] Request Handlers: urllib, requests, websockets, curl_cffi
+        [debug] Loaded 1838 extractors
+        [debug] Fetching release info: https://api.github.com/repos/yt-dlp/yt-dlp/releases/latest
+        Latest version: nightly@... from yt-dlp/yt-dlp-nightly-builds
         yt-dlp is up to date (nightly@... from yt-dlp/yt-dlp-nightly-builds)
         [youtube] Extracting URL: https://www.youtube.com/watch?v=BaW_jenozKc
         <more lines>

.github/ISSUE_TEMPLATE/3_site_feature_request.yml

@@ -1,14 +1,12 @@
 name: Site feature request
-description: Request a new functionality for a supported site
+description: Request new functionality for a site supported by yt-dlp
 labels: [triage, site-enhancement]
 body:
-  - type: checkboxes
+  - type: markdown
     attributes:
-      label: DO NOT REMOVE OR SKIP THE ISSUE TEMPLATE
-      description: Fill all fields even if you think it is irrelevant for the issue
-      options:
-        - label: I understand that I will be **blocked** if I *intentionally* remove or skip any mandatory\* field
-          required: true
+      value: |
+        > [!IMPORTANT]
+        > Not providing the required (*) information or removing the template will result in your issue being closed and ignored.
   - type: checkboxes
     id: checklist
     attributes:
@@ -22,9 +20,7 @@ body:
           required: true
         - label: I've checked that all provided URLs are playable in a browser with the same IP and same login details
           required: true
-        - label: I've searched [known issues](https://github.com/yt-dlp/yt-dlp/issues/3766) and the [bugtracker](https://github.com/yt-dlp/yt-dlp/issues?q=) for similar issues **including closed ones**. DO NOT post duplicates
-          required: true
-        - label: I've read the [guidelines for opening an issue](https://github.com/yt-dlp/yt-dlp/blob/master/CONTRIBUTING.md#opening-an-issue)
+        - label: I've searched the [bugtracker](https://github.com/yt-dlp/yt-dlp/issues?q=is%3Aissue%20-label%3Aspam%20%20) for similar requests **including closed ones**. DO NOT post duplicates
           required: true
         - label: I've read about [sharing account credentials](https://github.com/yt-dlp/yt-dlp/blob/master/CONTRIBUTING.md#are-you-willing-to-share-account-details-if-needed) and I'm willing to share it if required
   - type: input
@@ -55,6 +51,8 @@ body:
     id: verbose
     attributes:
       label: Provide verbose output that clearly demonstrates the problem
+      description: |
+        This is mandatory unless absolutely impossible to provide. If you are unable to provide the output, please explain why.
       options:
         - label: Run **your** yt-dlp command with **-vU** flag added (`yt-dlp -vU <your command line>`)
           required: true
@@ -71,14 +69,15 @@ body:
       placeholder: |
         [debug] Command-line config: ['-vU', 'https://www.youtube.com/watch?v=BaW_jenozKc']
         [debug] Encodings: locale cp65001, fs utf-8, pref cp65001, out utf-8, error utf-8, screen utf-8
-        [debug] yt-dlp version nightly@... from yt-dlp/yt-dlp [b634ba742] (win_exe)
-        [debug] Python 3.8.10 (CPython 64bit) - Windows-10-10.0.22000-SP0
-        [debug] exe versions: ffmpeg N-106550-g072101bd52-20220410 (fdk,setts), ffprobe N-106624-g391ce570c8-20220415, phantomjs 2.1.1
-        [debug] Optional libraries: Cryptodome-3.15.0, brotli-1.0.9, certifi-2022.06.15, mutagen-1.45.1, sqlite3-2.6.0, websockets-10.3
+        [debug] yt-dlp version nightly@... from yt-dlp/yt-dlp-nightly-builds [1a176d874] (win_exe)
+        [debug] Python 3.10.11 (CPython AMD64 64bit) - Windows-10-10.0.20348-SP0 (OpenSSL 1.1.1t  7 Feb 2023)
+        [debug] exe versions: ffmpeg 7.0.2 (setts), ffprobe 7.0.2
+        [debug] Optional libraries: Cryptodome-3.21.0, brotli-1.1.0, certifi-2024.08.30, curl_cffi-0.5.10, mutagen-1.47.0, requests-2.32.3, sqlite3-3.40.1, urllib3-2.2.3, websockets-13.1
         [debug] Proxy map: {}
-        [debug] Request Handlers: urllib, requests
-        [debug] Loaded 1893 extractors
-        [debug] Fetching release info: https://api.github.com/repos/yt-dlp/yt-dlp-nightly-builds/releases/latest
+        [debug] Request Handlers: urllib, requests, websockets, curl_cffi
+        [debug] Loaded 1838 extractors
+        [debug] Fetching release info: https://api.github.com/repos/yt-dlp/yt-dlp/releases/latest
+        Latest version: nightly@... from yt-dlp/yt-dlp-nightly-builds
         yt-dlp is up to date (nightly@... from yt-dlp/yt-dlp-nightly-builds)
         [youtube] Extracting URL: https://www.youtube.com/watch?v=BaW_jenozKc
         <more lines>

.github/ISSUE_TEMPLATE/4_bug_report.yml

@@ -2,13 +2,11 @@ name: Core bug report
 description: Report a bug unrelated to any particular site or extractor
 labels: [triage, bug]
 body:
-  - type: checkboxes
+  - type: markdown
     attributes:
-      label: DO NOT REMOVE OR SKIP THE ISSUE TEMPLATE
-      description: Fill all fields even if you think it is irrelevant for the issue
-      options:
-        - label: I understand that I will be **blocked** if I *intentionally* remove or skip any mandatory\* field
-          required: true
+      value: |
+        > [!IMPORTANT]
+        > Not providing the required (*) information or removing the template will result in your issue being closed and ignored.
   - type: checkboxes
     id: checklist
     attributes:
@@ -20,13 +18,7 @@ body:
           required: true
         - label: I've verified that I have **updated yt-dlp to nightly or master** ([update instructions](https://github.com/yt-dlp/yt-dlp#update-channels))
           required: true
-        - label: I've checked that all provided URLs are playable in a browser with the same IP and same login details
-          required: true
-        - label: I've checked that all URLs and arguments with special characters are [properly quoted or escaped](https://github.com/yt-dlp/yt-dlp/wiki/FAQ#video-url-contains-an-ampersand--and-im-getting-some-strange-output-1-2839-or-v-is-not-recognized-as-an-internal-or-external-command)
-          required: true
-        - label: I've searched [known issues](https://github.com/yt-dlp/yt-dlp/issues/3766) and the [bugtracker](https://github.com/yt-dlp/yt-dlp/issues?q=) for similar issues **including closed ones**. DO NOT post duplicates
-          required: true
-        - label: I've read the [guidelines for opening an issue](https://github.com/yt-dlp/yt-dlp/blob/master/CONTRIBUTING.md#opening-an-issue)
+        - label: I've searched [known issues](https://github.com/yt-dlp/yt-dlp/issues/3766), [the FAQ](https://github.com/yt-dlp/yt-dlp/wiki/FAQ), and the [bugtracker](https://github.com/yt-dlp/yt-dlp/issues?q=is%3Aissue%20-label%3Aspam%20%20) for similar issues **including closed ones**. DO NOT post duplicates
           required: true
   - type: textarea
     id: description
@@ -40,6 +32,8 @@ body:
     id: verbose
     attributes:
       label: Provide verbose output that clearly demonstrates the problem
+      description: |
+        This is mandatory unless absolutely impossible to provide. If you are unable to provide the output, please explain why.
       options:
         - label: Run **your** yt-dlp command with **-vU** flag added (`yt-dlp -vU <your command line>`)
           required: true
@@ -56,14 +50,15 @@ body:
       placeholder: |
         [debug] Command-line config: ['-vU', 'https://www.youtube.com/watch?v=BaW_jenozKc']
         [debug] Encodings: locale cp65001, fs utf-8, pref cp65001, out utf-8, error utf-8, screen utf-8
-        [debug] yt-dlp version nightly@... from yt-dlp/yt-dlp [b634ba742] (win_exe)
-        [debug] Python 3.8.10 (CPython 64bit) - Windows-10-10.0.22000-SP0
-        [debug] exe versions: ffmpeg N-106550-g072101bd52-20220410 (fdk,setts), ffprobe N-106624-g391ce570c8-20220415, phantomjs 2.1.1
-        [debug] Optional libraries: Cryptodome-3.15.0, brotli-1.0.9, certifi-2022.06.15, mutagen-1.45.1, sqlite3-2.6.0, websockets-10.3
+        [debug] yt-dlp version nightly@... from yt-dlp/yt-dlp-nightly-builds [1a176d874] (win_exe)
+        [debug] Python 3.10.11 (CPython AMD64 64bit) - Windows-10-10.0.20348-SP0 (OpenSSL 1.1.1t  7 Feb 2023)
+        [debug] exe versions: ffmpeg 7.0.2 (setts), ffprobe 7.0.2
+        [debug] Optional libraries: Cryptodome-3.21.0, brotli-1.1.0, certifi-2024.08.30, curl_cffi-0.5.10, mutagen-1.47.0, requests-2.32.3, sqlite3-3.40.1, urllib3-2.2.3, websockets-13.1
         [debug] Proxy map: {}
-        [debug] Request Handlers: urllib, requests
-        [debug] Loaded 1893 extractors
-        [debug] Fetching release info: https://api.github.com/repos/yt-dlp/yt-dlp-nightly-builds/releases/latest
+        [debug] Request Handlers: urllib, requests, websockets, curl_cffi
+        [debug] Loaded 1838 extractors
+        [debug] Fetching release info: https://api.github.com/repos/yt-dlp/yt-dlp/releases/latest
+        Latest version: nightly@... from yt-dlp/yt-dlp-nightly-builds
         yt-dlp is up to date (nightly@... from yt-dlp/yt-dlp-nightly-builds)
         [youtube] Extracting URL: https://www.youtube.com/watch?v=BaW_jenozKc
         <more lines>

.github/ISSUE_TEMPLATE/5_feature_request.yml

@@ -1,14 +1,12 @@
 name: Feature request
-description: Request a new functionality unrelated to any particular site or extractor
+description: Request a new feature unrelated to any particular site or extractor
 labels: [triage, enhancement]
 body:
-  - type: checkboxes
+  - type: markdown
     attributes:
-      label: DO NOT REMOVE OR SKIP THE ISSUE TEMPLATE
-      description: Fill all fields even if you think it is irrelevant for the issue
-      options:
-        - label: I understand that I will be **blocked** if I *intentionally* remove or skip any mandatory\* field
-          required: true
+      value: |
+        > [!IMPORTANT]
+        > Not providing the required (*) information or removing the template will result in your issue being closed and ignored.
   - type: checkboxes
     id: checklist
     attributes:
@@ -22,9 +20,7 @@ body:
           required: true
         - label: I've verified that I have **updated yt-dlp to nightly or master** ([update instructions](https://github.com/yt-dlp/yt-dlp#update-channels))
           required: true
-        - label: I've searched [known issues](https://github.com/yt-dlp/yt-dlp/issues/3766) and the [bugtracker](https://github.com/yt-dlp/yt-dlp/issues?q=) for similar issues **including closed ones**. DO NOT post duplicates
-          required: true
-        - label: I've read the [guidelines for opening an issue](https://github.com/yt-dlp/yt-dlp/blob/master/CONTRIBUTING.md#opening-an-issue)
+        - label: I've searched the [bugtracker](https://github.com/yt-dlp/yt-dlp/issues?q=is%3Aissue%20-label%3Aspam%20%20) for similar requests **including closed ones**. DO NOT post duplicates
           required: true
   - type: textarea
     id: description
@@ -38,6 +34,8 @@ body:
     id: verbose
     attributes:
       label: Provide verbose output that clearly demonstrates the problem
+      description: |
+        This is mandatory unless absolutely impossible to provide. If you are unable to provide the output, please explain why.
       options:
         - label: Run **your** yt-dlp command with **-vU** flag added (`yt-dlp -vU <your command line>`)
         - label: "If using API, add `'verbose': True` to `YoutubeDL` params instead"
@@ -52,14 +50,15 @@ body:
       placeholder: |
         [debug] Command-line config: ['-vU', 'https://www.youtube.com/watch?v=BaW_jenozKc']
         [debug] Encodings: locale cp65001, fs utf-8, pref cp65001, out utf-8, error utf-8, screen utf-8
-        [debug] yt-dlp version nightly@... from yt-dlp/yt-dlp [b634ba742] (win_exe)
-        [debug] Python 3.8.10 (CPython 64bit) - Windows-10-10.0.22000-SP0
-        [debug] exe versions: ffmpeg N-106550-g072101bd52-20220410 (fdk,setts), ffprobe N-106624-g391ce570c8-20220415, phantomjs 2.1.1
-        [debug] Optional libraries: Cryptodome-3.15.0, brotli-1.0.9, certifi-2022.06.15, mutagen-1.45.1, sqlite3-2.6.0, websockets-10.3
+        [debug] yt-dlp version nightly@... from yt-dlp/yt-dlp-nightly-builds [1a176d874] (win_exe)
+        [debug] Python 3.10.11 (CPython AMD64 64bit) - Windows-10-10.0.20348-SP0 (OpenSSL 1.1.1t  7 Feb 2023)
+        [debug] exe versions: ffmpeg 7.0.2 (setts), ffprobe 7.0.2
+        [debug] Optional libraries: Cryptodome-3.21.0, brotli-1.1.0, certifi-2024.08.30, curl_cffi-0.5.10, mutagen-1.47.0, requests-2.32.3, sqlite3-3.40.1, urllib3-2.2.3, websockets-13.1
         [debug] Proxy map: {}
-        [debug] Request Handlers: urllib, requests
-        [debug] Loaded 1893 extractors
-        [debug] Fetching release info: https://api.github.com/repos/yt-dlp/yt-dlp-nightly-builds/releases/latest
+        [debug] Request Handlers: urllib, requests, websockets, curl_cffi
+        [debug] Loaded 1838 extractors
+        [debug] Fetching release info: https://api.github.com/repos/yt-dlp/yt-dlp/releases/latest
+        Latest version: nightly@... from yt-dlp/yt-dlp-nightly-builds
         yt-dlp is up to date (nightly@... from yt-dlp/yt-dlp-nightly-builds)
         [youtube] Extracting URL: https://www.youtube.com/watch?v=BaW_jenozKc
         <more lines>

.github/ISSUE_TEMPLATE/6_question.yml

@@ -1,14 +1,12 @@
 name: Ask question
-description: Ask yt-dlp related question
+description: Ask a question about using yt-dlp
 labels: [question]
 body:
-  - type: checkboxes
+  - type: markdown
     attributes:
-      label: DO NOT REMOVE OR SKIP THE ISSUE TEMPLATE
-      description: Fill all fields even if you think it is irrelevant for the issue
-      options:
-        - label: I understand that I will be **blocked** if I *intentionally* remove or skip any mandatory\* field
-          required: true
+      value: |
+        > [!IMPORTANT]
+        > Not providing the required (*) information or removing the template will result in your issue being closed and ignored.
   - type: markdown
     attributes:
       value: |
@@ -28,9 +26,7 @@ body:
           required: true
         - label: I've verified that I have **updated yt-dlp to nightly or master** ([update instructions](https://github.com/yt-dlp/yt-dlp#update-channels))
           required: true
-        - label: I've searched [known issues](https://github.com/yt-dlp/yt-dlp/issues/3766) and the [bugtracker](https://github.com/yt-dlp/yt-dlp/issues?q=) for similar questions **including closed ones**. DO NOT post duplicates
-          required: true
-        - label: I've read the [guidelines for opening an issue](https://github.com/yt-dlp/yt-dlp/blob/master/CONTRIBUTING.md#opening-an-issue)
+        - label: I've searched [known issues](https://github.com/yt-dlp/yt-dlp/issues/3766), [the FAQ](https://github.com/yt-dlp/yt-dlp/wiki/FAQ), and the [bugtracker](https://github.com/yt-dlp/yt-dlp/issues?q=is%3Aissue%20-label%3Aspam%20%20) for similar questions **including closed ones**. DO NOT post duplicates
           required: true
   - type: textarea
     id: question
@@ -44,6 +40,8 @@ body:
     id: verbose
     attributes:
       label: Provide verbose output that clearly demonstrates the problem
+      description: |
+        This is mandatory unless absolutely impossible to provide. If you are unable to provide the output, please explain why.
       options:
         - label: Run **your** yt-dlp command with **-vU** flag added (`yt-dlp -vU <your command line>`)
         - label: "If using API, add `'verbose': True` to `YoutubeDL` params instead"
@@ -58,14 +56,15 @@ body:
       placeholder: |
         [debug] Command-line config: ['-vU', 'https://www.youtube.com/watch?v=BaW_jenozKc']
         [debug] Encodings: locale cp65001, fs utf-8, pref cp65001, out utf-8, error utf-8, screen utf-8
-        [debug] yt-dlp version nightly@... from yt-dlp/yt-dlp [b634ba742] (win_exe)
-        [debug] Python 3.8.10 (CPython 64bit) - Windows-10-10.0.22000-SP0
-        [debug] exe versions: ffmpeg N-106550-g072101bd52-20220410 (fdk,setts), ffprobe N-106624-g391ce570c8-20220415, phantomjs 2.1.1
-        [debug] Optional libraries: Cryptodome-3.15.0, brotli-1.0.9, certifi-2022.06.15, mutagen-1.45.1, sqlite3-2.6.0, websockets-10.3
+        [debug] yt-dlp version nightly@... from yt-dlp/yt-dlp-nightly-builds [1a176d874] (win_exe)
+        [debug] Python 3.10.11 (CPython AMD64 64bit) - Windows-10-10.0.20348-SP0 (OpenSSL 1.1.1t  7 Feb 2023)
+        [debug] exe versions: ffmpeg 7.0.2 (setts), ffprobe 7.0.2
+        [debug] Optional libraries: Cryptodome-3.21.0, brotli-1.1.0, certifi-2024.08.30, curl_cffi-0.5.10, mutagen-1.47.0, requests-2.32.3, sqlite3-3.40.1, urllib3-2.2.3, websockets-13.1
         [debug] Proxy map: {}
-        [debug] Request Handlers: urllib, requests
-        [debug] Loaded 1893 extractors
-        [debug] Fetching release info: https://api.github.com/repos/yt-dlp/yt-dlp-nightly-builds/releases/latest
+        [debug] Request Handlers: urllib, requests, websockets, curl_cffi
+        [debug] Loaded 1838 extractors
+        [debug] Fetching release info: https://api.github.com/repos/yt-dlp/yt-dlp/releases/latest
+        Latest version: nightly@... from yt-dlp/yt-dlp-nightly-builds
         yt-dlp is up to date (nightly@... from yt-dlp/yt-dlp-nightly-builds)
         [youtube] Extracting URL: https://www.youtube.com/watch?v=BaW_jenozKc
         <more lines>

.github/ISSUE_TEMPLATE/config.yml

@@ -1,8 +1,5 @@
 blank_issues_enabled: false
 contact_links:
-  - name: Get help from the community on Discord
+  - name: Get help on Discord
     url: https://discord.gg/H5MNcFW63r
-    about: Join the yt-dlp Discord for community-powered support!
-  - name: Matrix Bridge to the Discord server
-    url: https://matrix.to/#/#yt-dlp:matrix.org
-    about: For those who do not want to use Discord
+    about: Join the yt-dlp Discord server for support and discussion

.github/ISSUE_TEMPLATE_tmpl/1_broken_site.yml

@@ -18,9 +18,7 @@ body:
           required: true
         - label: I've checked that all URLs and arguments with special characters are [properly quoted or escaped](https://github.com/yt-dlp/yt-dlp/wiki/FAQ#video-url-contains-an-ampersand--and-im-getting-some-strange-output-1-2839-or-v-is-not-recognized-as-an-internal-or-external-command)
           required: true
-        - label: I've searched [known issues](https://github.com/yt-dlp/yt-dlp/issues/3766) and the [bugtracker](https://github.com/yt-dlp/yt-dlp/issues?q=) for similar issues **including closed ones**. DO NOT post duplicates
-          required: true
-        - label: I've read the [guidelines for opening an issue](https://github.com/yt-dlp/yt-dlp/blob/master/CONTRIBUTING.md#opening-an-issue)
+        - label: I've searched [known issues](https://github.com/yt-dlp/yt-dlp/issues/3766), [the FAQ](https://github.com/yt-dlp/yt-dlp/wiki/FAQ), and the [bugtracker](https://github.com/yt-dlp/yt-dlp/issues?q=is%%3Aissue%%20-label%%3Aspam%%20%%20) for similar issues **including closed ones**. DO NOT post duplicates
           required: true
         - label: I've read about [sharing account credentials](https://github.com/yt-dlp/yt-dlp/blob/master/CONTRIBUTING.md#are-you-willing-to-share-account-details-if-needed) and I'm willing to share it if required
   - type: input

.github/ISSUE_TEMPLATE_tmpl/2_site_support_request.yml

@@ -18,9 +18,7 @@ body:
           required: true
         - label: I've checked that none of provided URLs [violate any copyrights](https://github.com/yt-dlp/yt-dlp/blob/master/CONTRIBUTING.md#is-the-website-primarily-used-for-piracy) or contain any [DRM](https://en.wikipedia.org/wiki/Digital_rights_management) to the best of my knowledge
           required: true
-        - label: I've searched [known issues](https://github.com/yt-dlp/yt-dlp/issues/3766) and the [bugtracker](https://github.com/yt-dlp/yt-dlp/issues?q=) for similar issues **including closed ones**. DO NOT post duplicates
-          required: true
-        - label: I've read the [guidelines for opening an issue](https://github.com/yt-dlp/yt-dlp/blob/master/CONTRIBUTING.md#opening-an-issue)
+        - label: I've searched the [bugtracker](https://github.com/yt-dlp/yt-dlp/issues?q=is%%3Aissue%%20-label%%3Aspam%%20%%20) for similar requests **including closed ones**. DO NOT post duplicates
           required: true
         - label: I've read about [sharing account credentials](https://github.com/yt-dlp/yt-dlp/blob/master/CONTRIBUTING.md#are-you-willing-to-share-account-details-if-needed) and am willing to share it if required
   - type: input

.github/ISSUE_TEMPLATE_tmpl/3_site_feature_request.yml

@@ -1,5 +1,5 @@
 name: Site feature request
-description: Request a new functionality for a supported site
+description: Request new functionality for a site supported by yt-dlp
 labels: [triage, site-enhancement]
 body:
   %(no_skip)s
@@ -16,9 +16,7 @@ body:
           required: true
         - label: I've checked that all provided URLs are playable in a browser with the same IP and same login details
           required: true
-        - label: I've searched [known issues](https://github.com/yt-dlp/yt-dlp/issues/3766) and the [bugtracker](https://github.com/yt-dlp/yt-dlp/issues?q=) for similar issues **including closed ones**. DO NOT post duplicates
-          required: true
-        - label: I've read the [guidelines for opening an issue](https://github.com/yt-dlp/yt-dlp/blob/master/CONTRIBUTING.md#opening-an-issue)
+        - label: I've searched the [bugtracker](https://github.com/yt-dlp/yt-dlp/issues?q=is%%3Aissue%%20-label%%3Aspam%%20%%20) for similar requests **including closed ones**. DO NOT post duplicates
           required: true
         - label: I've read about [sharing account credentials](https://github.com/yt-dlp/yt-dlp/blob/master/CONTRIBUTING.md#are-you-willing-to-share-account-details-if-needed) and I'm willing to share it if required
   - type: input

.github/ISSUE_TEMPLATE_tmpl/4_bug_report.yml

@@ -14,13 +14,7 @@ body:
           required: true
         - label: I've verified that I have **updated yt-dlp to nightly or master** ([update instructions](https://github.com/yt-dlp/yt-dlp#update-channels))
           required: true
-        - label: I've checked that all provided URLs are playable in a browser with the same IP and same login details
-          required: true
-        - label: I've checked that all URLs and arguments with special characters are [properly quoted or escaped](https://github.com/yt-dlp/yt-dlp/wiki/FAQ#video-url-contains-an-ampersand--and-im-getting-some-strange-output-1-2839-or-v-is-not-recognized-as-an-internal-or-external-command)
-          required: true
-        - label: I've searched [known issues](https://github.com/yt-dlp/yt-dlp/issues/3766) and the [bugtracker](https://github.com/yt-dlp/yt-dlp/issues?q=) for similar issues **including closed ones**. DO NOT post duplicates
-          required: true
-        - label: I've read the [guidelines for opening an issue](https://github.com/yt-dlp/yt-dlp/blob/master/CONTRIBUTING.md#opening-an-issue)
+        - label: I've searched [known issues](https://github.com/yt-dlp/yt-dlp/issues/3766), [the FAQ](https://github.com/yt-dlp/yt-dlp/wiki/FAQ), and the [bugtracker](https://github.com/yt-dlp/yt-dlp/issues?q=is%%3Aissue%%20-label%%3Aspam%%20%%20) for similar issues **including closed ones**. DO NOT post duplicates
           required: true
   - type: textarea
     id: description

.github/ISSUE_TEMPLATE_tmpl/5_feature_request.yml

@@ -1,5 +1,5 @@
 name: Feature request
-description: Request a new functionality unrelated to any particular site or extractor
+description: Request a new feature unrelated to any particular site or extractor
 labels: [triage, enhancement]
 body:
   %(no_skip)s
@@ -16,9 +16,7 @@ body:
           required: true
         - label: I've verified that I have **updated yt-dlp to nightly or master** ([update instructions](https://github.com/yt-dlp/yt-dlp#update-channels))
           required: true
-        - label: I've searched [known issues](https://github.com/yt-dlp/yt-dlp/issues/3766) and the [bugtracker](https://github.com/yt-dlp/yt-dlp/issues?q=) for similar issues **including closed ones**. DO NOT post duplicates
-          required: true
-        - label: I've read the [guidelines for opening an issue](https://github.com/yt-dlp/yt-dlp/blob/master/CONTRIBUTING.md#opening-an-issue)
+        - label: I've searched the [bugtracker](https://github.com/yt-dlp/yt-dlp/issues?q=is%%3Aissue%%20-label%%3Aspam%%20%%20) for similar requests **including closed ones**. DO NOT post duplicates
           required: true
   - type: textarea
     id: description

.github/ISSUE_TEMPLATE_tmpl/6_question.yml

@@ -1,5 +1,5 @@
 name: Ask question
-description: Ask yt-dlp related question
+description: Ask a question about using yt-dlp
 labels: [question]
 body:
   %(no_skip)s
@@ -22,9 +22,7 @@ body:
           required: true
         - label: I've verified that I have **updated yt-dlp to nightly or master** ([update instructions](https://github.com/yt-dlp/yt-dlp#update-channels))
           required: true
-        - label: I've searched [known issues](https://github.com/yt-dlp/yt-dlp/issues/3766) and the [bugtracker](https://github.com/yt-dlp/yt-dlp/issues?q=) for similar questions **including closed ones**. DO NOT post duplicates
-          required: true
-        - label: I've read the [guidelines for opening an issue](https://github.com/yt-dlp/yt-dlp/blob/master/CONTRIBUTING.md#opening-an-issue)
+        - label: I've searched [known issues](https://github.com/yt-dlp/yt-dlp/issues/3766), [the FAQ](https://github.com/yt-dlp/yt-dlp/wiki/FAQ), and the [bugtracker](https://github.com/yt-dlp/yt-dlp/issues?q=is%%3Aissue%%20-label%%3Aspam%%20%%20) for similar questions **including closed ones**. DO NOT post duplicates
           required: true
   - type: textarea
     id: question

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,14 +1,17 @@
-**IMPORTANT**: PRs without the template will be CLOSED
+<!--
+    **IMPORTANT**: PRs without the template will be CLOSED
+    
+    Due to the high volume of pull requests, it may be a while before your PR is reviewed.
+    Please try to keep your pull request focused on a single bugfix or new feature.
+    Pull requests with a vast scope and/or very large diff will take much longer to review.
+    It is recommended for new contributors to stick to smaller pull requests, so you can receive much more immediate feedback as you familiarize yourself with the codebase.
+
+    PLEASE AVOID FORCE-PUSHING after opening a PR, as it makes reviewing more difficult.
+-->
 
 ### Description of your *pull request* and other information
 
-<!--
-
-Explanation of your *pull request* in arbitrary form goes here. Please **make sure the description explains the purpose and effect** of your *pull request* and is worded well enough to be understood. Provide as much **context and examples** as possible
-
--->
-
-ADD DESCRIPTION HERE
+ADD DETAILED DESCRIPTION HERE
 
 Fixes #
 
@@ -16,24 +19,22 @@ ### Description of your *pull request* and other information
 <details open><summary>Template</summary> <!-- OPEN is intentional -->
 
 <!--
+    # PLEASE FOLLOW THE GUIDE BELOW
 
-# PLEASE FOLLOW THE GUIDE BELOW
-
-- You will be asked some questions, please read them **carefully** and answer honestly
-- Put an `x` into all the boxes `[ ]` relevant to your *pull request* (like [x])
-- Use *Preview* tab to see how your *pull request* will actually look like
-
+    - You will be asked some questions, please read them **carefully** and answer honestly
+    - Put an `x` into all the boxes `[ ]` relevant to your *pull request* (like [x])
+    - Use *Preview* tab to see what your *pull request* will actually look like
 -->
 
 ### Before submitting a *pull request* make sure you have:
 - [ ] At least skimmed through [contributing guidelines](https://github.com/yt-dlp/yt-dlp/blob/master/CONTRIBUTING.md#developer-instructions) including [yt-dlp coding conventions](https://github.com/yt-dlp/yt-dlp/blob/master/CONTRIBUTING.md#yt-dlp-coding-conventions)
 - [ ] [Searched](https://github.com/yt-dlp/yt-dlp/search?q=is%3Apr&type=Issues) the bugtracker for similar pull requests
 
-### In order to be accepted and merged into yt-dlp each piece of code must be in public domain or released under [Unlicense](http://unlicense.org/). Check all of the following options that apply:
-- [ ] I am the original author of this code and I am willing to release it under [Unlicense](http://unlicense.org/)
-- [ ] I am not the original author of this code but it is in public domain or released under [Unlicense](http://unlicense.org/) (provide reliable evidence)
+### In order to be accepted and merged into yt-dlp each piece of code must be in public domain or released under [Unlicense](http://unlicense.org/). Check those that apply and remove the others:
+- [ ] I am the original author of the code in this PR, and I am willing to release it under [Unlicense](http://unlicense.org/)
+- [ ] I am not the original author of the code in this PR, but it is in the public domain or released under [Unlicense](http://unlicense.org/) (provide reliable evidence)
 
-### What is the purpose of your *pull request*?
+### What is the purpose of your *pull request*? Check those that apply and remove the others:
 - [ ] Fix or improvement to an extractor (Make sure to add/update tests)
 - [ ] New extractor ([Piracy websites will not be accepted](https://github.com/yt-dlp/yt-dlp/blob/master/CONTRIBUTING.md#is-the-website-primarily-used-for-piracy))
 - [ ] Core bug fix/improvement

.github/workflows/build.yml

@@ -21,15 +21,9 @@ on:
       macos:
         default: true
         type: boolean
-      macos_legacy:
-        default: true
-        type: boolean
       windows:
         default: true
         type: boolean
-      windows32:
-        default: true
-        type: boolean
       origin:
         required: false
         default: ''
@@ -67,16 +61,8 @@ on:
         description: yt-dlp_macos, yt-dlp_macos.zip
         default: true
         type: boolean
-      macos_legacy:
-        description: yt-dlp_macos_legacy
-        default: true
-        type: boolean
       windows:
-        description: yt-dlp.exe, yt-dlp_min.exe, yt-dlp_win.zip
-        default: true
-        type: boolean
-      windows32:
-        description: yt-dlp_x86.exe
+        description: yt-dlp.exe, yt-dlp_win.zip, yt-dlp_x86.exe, yt-dlp_win_x86.zip, yt-dlp_arm64.exe, yt-dlp_win_arm64.zip
         default: true
         type: boolean
       origin:
@@ -192,29 +178,31 @@ jobs:
         with:
           path: ./repo
       - name: Virtualized Install, Prepare & Build
-        uses: yt-dlp/run-on-arch-action@v2
+        uses: yt-dlp/run-on-arch-action@v3
         with:
           # Ref: https://github.com/uraimo/run-on-arch-action/issues/55
           env: |
             GITHUB_WORKFLOW: build
           githubToken: ${{ github.token }} # To cache image
           arch: ${{ matrix.architecture }}
-          distro: ubuntu18.04 # Standalone executable should be built on minimum supported OS
+          distro: ubuntu20.04 # Standalone executable should be built on minimum supported OS
           dockerRunArgs: --volume "${PWD}/repo:/repo"
           install: | # Installing Python 3.10 from the Deadsnakes repo raises errors
             apt update
-            apt -y install zlib1g-dev libffi-dev python3.8 python3.8-dev python3.8-distutils python3-pip
-            python3.8 -m pip install -U pip setuptools wheel
-            # Cannot access any files from the repo directory at this stage
-            python3.8 -m pip install -U Pyinstaller mutagen pycryptodomex websockets brotli certifi secretstorage cffi
+            apt -y install zlib1g-dev libffi-dev python3.9 python3.9-dev python3.9-distutils python3-pip \
+              python3-secretstorage  # Cannot build cryptography wheel in virtual armv7 environment
+            python3.9 -m pip install -U pip wheel 'setuptools>=71.0.2'
+            # XXX: Keep this in sync with pyproject.toml (it can't be accessed at this stage) and exclude secretstorage
+            python3.9 -m pip install -U Pyinstaller mutagen pycryptodomex brotli certifi cffi \
+              'requests>=2.32.2,<3' 'urllib3>=2.0.2,<3' 'websockets>=13.0'
 
           run: |
             cd repo
-            python3.8 devscripts/install_deps.py -o --include build
-            python3.8 devscripts/install_deps.py --include pyinstaller --include secretstorage  # Cached version may be out of date
-            python3.8 devscripts/update-version.py -c "${{ inputs.channel }}" -r "${{ needs.process.outputs.origin }}" "${{ inputs.version }}"
-            python3.8 devscripts/make_lazy_extractors.py
-            python3.8 -m bundle.pyinstaller
+            python3.9 devscripts/install_deps.py -o --include build
+            python3.9 devscripts/install_deps.py --include pyinstaller  # Cached versions may be out of date
+            python3.9 devscripts/update-version.py -c "${{ inputs.channel }}" -r "${{ needs.process.outputs.origin }}" "${{ inputs.version }}"
+            python3.9 devscripts/make_lazy_extractors.py
+            python3.9 -m bundle.pyinstaller
 
             if ${{ vars.UPDATE_TO_VERIFICATION && 'true' || 'false' }}; then
               arch="${{ (matrix.architecture == 'armv7' && 'armv7l') || matrix.architecture }}"
@@ -237,34 +225,65 @@ jobs:
   macos:
     needs: process
     if: inputs.macos
-    runs-on: macos-11
+    permissions:
+      contents: read
+      actions: write  # For cleaning up cache
+    runs-on: macos-14
 
     steps:
       - uses: actions/checkout@v4
       # NB: Building universal2 does not work with python from actions/setup-python
+
+      - name: Restore cached requirements
+        id: restore-cache
+        uses: actions/cache/restore@v4
+        env:
+          SEGMENT_DOWNLOAD_TIMEOUT_MINS: 1
+        with:
+          path: |
+            ~/yt-dlp-build-venv
+          key: cache-reqs-${{ github.job }}-${{ github.ref }}
+
       - name: Install Requirements
         run: |
           brew install coreutils
-          python3 devscripts/install_deps.py --user -o --include build
+          # We need to use system Python in order to roll our own universal2 curl_cffi wheel
+          brew uninstall --ignore-dependencies python3
+          python3 -m venv ~/yt-dlp-build-venv
+          source ~/yt-dlp-build-venv/bin/activate
+          python3 devscripts/install_deps.py -o --include build
           python3 devscripts/install_deps.py --print --include pyinstaller > requirements.txt
           # We need to ignore wheels otherwise we break universal2 builds
-          python3 -m pip install -U --user --no-binary :all: -r requirements.txt
+          python3 -m pip install -U --no-binary :all: -r requirements.txt
           # We need to fuse our own universal2 wheels for curl_cffi
-          python3 -m pip install -U --user delocate
+          python3 -m pip install -U 'delocate==0.11.0'
           mkdir curl_cffi_whls curl_cffi_universal2
           python3 devscripts/install_deps.py --print -o --include curl-cffi > requirements.txt
           for platform in "macosx_11_0_arm64" "macosx_11_0_x86_64"; do
             python3 -m pip download \
               --only-binary=:all: \
               --platform "${platform}" \
-              --pre -d curl_cffi_whls \
+              -d curl_cffi_whls \
               -r requirements.txt
           done
+          ( # Overwrite x86_64-only libs with fat/universal2 libs or else Pyinstaller will do the opposite
+            # See https://github.com/yt-dlp/yt-dlp/pull/10069
+            cd curl_cffi_whls
+            mkdir -p curl_cffi/.dylibs
+            python_libdir=$(python3 -c 'import sys; from pathlib import Path; print(Path(sys.path[1]).parent)')
+            for dylib in lib{ssl,crypto}.3.dylib; do
+              cp "${python_libdir}/${dylib}" "curl_cffi/.dylibs/${dylib}"
+              for wheel in curl_cffi*macos*x86_64.whl; do
+                zip "${wheel}" "curl_cffi/.dylibs/${dylib}"
+              done
+            done
+          )
           python3 -m delocate.cmd.delocate_fuse curl_cffi_whls/curl_cffi*.whl -w curl_cffi_universal2
           python3 -m delocate.cmd.delocate_fuse curl_cffi_whls/cffi*.whl -w curl_cffi_universal2
-          cd curl_cffi_universal2
-          for wheel in *cffi*.whl; do mv -n -- "${wheel}" "${wheel/x86_64/universal2}"; done
-          python3 -m pip install -U --user *cffi*.whl
+          for wheel in curl_cffi_universal2/*cffi*.whl; do
+            mv -n -- "${wheel}" "${wheel/x86_64/universal2}"
+          done
+          python3 -m pip install --force-reinstall -U curl_cffi_universal2/*cffi*.whl
 
       - name: Prepare
         run: |
@@ -272,6 +291,7 @@ jobs:
           python3 devscripts/make_lazy_extractors.py
       - name: Build
         run: |
+          source ~/yt-dlp-build-venv/bin/activate
           python3 -m bundle.pyinstaller --target-architecture universal2 --onedir
           (cd ./dist/yt-dlp_macos && zip -r ../yt-dlp_macos.zip .)
           python3 -m bundle.pyinstaller --target-architecture universal2
@@ -295,73 +315,71 @@ jobs:
             dist/yt-dlp_macos.zip
           compression-level: 0
 
-  macos_legacy:
-    needs: process
-    if: inputs.macos_legacy
-    runs-on: macos-12
-
-    steps:
-      - uses: actions/checkout@v4
-      - name: Install Python
-        # We need the official Python, because the GA ones only support newer macOS versions
+      - name: Cleanup cache
+        if: steps.restore-cache.outputs.cache-hit == 'true'
         env:
-          PYTHON_VERSION: 3.10.5
-          MACOSX_DEPLOYMENT_TARGET: 10.9 # Used up by the Python build tools
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          cache_key: cache-reqs-${{ github.job }}-${{ github.ref }}
         run: |
-          # Hack to get the latest patch version. Uncomment if needed
-          #brew install python@3.10
-          #export PYTHON_VERSION=$( $(brew --prefix)/opt/python@3.10/bin/python3 --version | cut -d ' ' -f 2 )
-          curl https://www.python.org/ftp/python/${PYTHON_VERSION}/python-${PYTHON_VERSION}-macos11.pkg -o "python.pkg"
-          sudo installer -pkg python.pkg -target /
-          python3 --version
-      - name: Install Requirements
-        run: |
-          brew install coreutils
-          python3 devscripts/install_deps.py --user -o --include build
-          python3 devscripts/install_deps.py --user --include pyinstaller
+          gh cache delete "${cache_key}"
 
-      - name: Prepare
-        run: |
-          python3 devscripts/update-version.py -c "${{ inputs.channel }}" -r "${{ needs.process.outputs.origin }}" "${{ inputs.version }}"
-          python3 devscripts/make_lazy_extractors.py
-      - name: Build
-        run: |
-          python3 -m bundle.pyinstaller
-          mv dist/yt-dlp_macos dist/yt-dlp_macos_legacy
-
-      - name: Verify --update-to
-        if: vars.UPDATE_TO_VERIFICATION
-        run: |
-          chmod +x ./dist/yt-dlp_macos_legacy
-          cp ./dist/yt-dlp_macos_legacy ./dist/yt-dlp_macos_legacy_downgraded
-          version="$(./dist/yt-dlp_macos_legacy --version)"
-          ./dist/yt-dlp_macos_legacy_downgraded -v --update-to yt-dlp/yt-dlp@2023.03.04
-          downgraded_version="$(./dist/yt-dlp_macos_legacy_downgraded --version)"
-          [[ "$version" != "$downgraded_version" ]]
-
-      - name: Upload artifacts
-        uses: actions/upload-artifact@v4
+      - name: Cache requirements
+        uses: actions/cache/save@v4
         with:
-          name: build-bin-${{ github.job }}
           path: |
-            dist/yt-dlp_macos_legacy
-          compression-level: 0
+            ~/yt-dlp-build-venv
+          key: cache-reqs-${{ github.job }}-${{ github.ref }}
 
   windows:
     needs: process
     if: inputs.windows
-    runs-on: windows-latest
+    permissions:
+      contents: read
+      actions: write  # For cleaning up cache
+    runs-on: ${{ matrix.runner }}
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+        - arch: 'x64'
+          runner: windows-2025
+          suffix: ''
+          python_version: '3.10'
+        - arch: 'x86'
+          runner: windows-2025
+          suffix: '_x86'
+          python_version: '3.10'
+        - arch: 'arm64'
+          runner: windows-11-arm
+          suffix: '_arm64'
+          python_version: '3.13'  # arm64 only has Python >= 3.11 available
 
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
-        with: # 3.8 is used for Win7 support
-          python-version: "3.8"
+        with:
+          python-version: ${{ matrix.python_version }}
+          architecture: ${{ matrix.arch }}
+
+      - name: Restore cached requirements
+        id: restore-cache
+        if: matrix.arch == 'arm64'
+        uses: actions/cache/restore@v4
+        env:
+          SEGMENT_DOWNLOAD_TIMEOUT_MINS: 1
+        with:
+          path: |
+            /yt-dlp-build-venv
+          key: cache-reqs-${{ github.job }}_${{ matrix.arch }}-${{ matrix.python_version }}-${{ github.ref }}
+
       - name: Install Requirements
-        run: | # Custom pyinstaller built with https://github.com/yt-dlp/pyinstaller-builds
+        run: |
+          python -m venv /yt-dlp-build-venv
+          /yt-dlp-build-venv/Scripts/Activate.ps1
           python devscripts/install_deps.py -o --include build
-          python devscripts/install_deps.py --include curl-cffi
-          python -m pip install -U "https://yt-dlp.github.io/Pyinstaller-Builds/x86_64/pyinstaller-5.8.0-py3-none-any.whl"
+          python devscripts/install_deps.py ${{ (matrix.arch != 'x86' && '--include curl-cffi') || '' }}
+          # Use custom pyinstaller built with https://github.com/yt-dlp/pyinstaller-builds
+          python -m pip install -U "https://yt-dlp.github.io/Pyinstaller-Builds/${{ matrix.arch }}/pyinstaller-6.15.0-py3-none-any.whl"
 
       - name: Prepare
         run: |
@@ -369,24 +387,18 @@ jobs:
           python devscripts/make_lazy_extractors.py
       - name: Build
         run: |
+          /yt-dlp-build-venv/Scripts/Activate.ps1
           python -m bundle.pyinstaller
           python -m bundle.pyinstaller --onedir
-          Move-Item ./dist/yt-dlp.exe ./dist/yt-dlp_real.exe
-          Compress-Archive -Path ./dist/yt-dlp/* -DestinationPath ./dist/yt-dlp_win.zip
-
-      - name: Install Requirements (py2exe)
-        run: |
-          python devscripts/install_deps.py --include py2exe
-      - name: Build (py2exe)
-        run: |
-          python -m bundle.py2exe
-          Move-Item ./dist/yt-dlp.exe ./dist/yt-dlp_min.exe
-          Move-Item ./dist/yt-dlp_real.exe ./dist/yt-dlp.exe
+          Compress-Archive -Path ./dist/yt-dlp${{ matrix.suffix }}/* -DestinationPath ./dist/yt-dlp_win${{ matrix.suffix }}.zip
 
       - name: Verify --update-to
-        if: vars.UPDATE_TO_VERIFICATION
+        # if: vars.UPDATE_TO_VERIFICATION
+        # Temporarily skip for arm64 until there is a release that it can --update-to
+        if: |
+          vars.UPDATE_TO_VERIFICATION && matrix.arch != 'arm64'
         run: |
-          foreach ($name in @("yt-dlp","yt-dlp_min")) {
+          foreach ($name in @("yt-dlp${{ matrix.suffix }}")) {
             Copy-Item "./dist/${name}.exe" "./dist/${name}_downgraded.exe"
             $version = & "./dist/${name}.exe" --version
             & "./dist/${name}_downgraded.exe" -v --update-to yt-dlp/yt-dlp@2023.03.04
@@ -396,62 +408,43 @@ jobs:
             }
           }
 
-      - name: Upload artifacts
-        uses: actions/upload-artifact@v4
-        with:
-          name: build-bin-${{ github.job }}
-          path: |
-            dist/yt-dlp.exe
-            dist/yt-dlp_min.exe
-            dist/yt-dlp_win.zip
-          compression-level: 0
-
-  windows32:
-    needs: process
-    if: inputs.windows32
-    runs-on: windows-latest
-
-    steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
-        with:
-          python-version: "3.8"
-          architecture: "x86"
-      - name: Install Requirements
+        # TODO: remove when there is a windows_arm64 release that we can --update-to
+      - name: Verify arm64 executable
+        if: |
+          vars.UPDATE_TO_VERIFICATION && matrix.arch == 'arm64'
         run: |
-          python devscripts/install_deps.py -o --include build
-          python devscripts/install_deps.py
-          python -m pip install -U "https://yt-dlp.github.io/Pyinstaller-Builds/i686/pyinstaller-5.8.0-py3-none-any.whl"
-
-      - name: Prepare
-        run: |
-          python devscripts/update-version.py -c "${{ inputs.channel }}" -r "${{ needs.process.outputs.origin }}" "${{ inputs.version }}"
-          python devscripts/make_lazy_extractors.py
-      - name: Build
-        run: |
-          python -m bundle.pyinstaller
-
-      - name: Verify --update-to
-        if: vars.UPDATE_TO_VERIFICATION
-        run: |
-          foreach ($name in @("yt-dlp_x86")) {
-            Copy-Item "./dist/${name}.exe" "./dist/${name}_downgraded.exe"
-            $version = & "./dist/${name}.exe" --version
-            & "./dist/${name}_downgraded.exe" -v --update-to yt-dlp/yt-dlp@2023.03.04
-            $downgraded_version = & "./dist/${name}_downgraded.exe" --version
-            if ($version -eq $downgraded_version) {
-              exit 1
-            }
+          foreach ($name in @("yt-dlp${{ matrix.suffix }}")) {
+            & "./dist/${name}.exe" -v --print-traffic --impersonate chrome "https://tls.browserleaks.com/json" -o ./resp.json
+            & cat ./resp.json
+            & "./dist/${name}.exe" --version
           }
 
       - name: Upload artifacts
         uses: actions/upload-artifact@v4
         with:
-          name: build-bin-${{ github.job }}
+          name: build-bin-${{ github.job }}-${{ matrix.arch }}
           path: |
-            dist/yt-dlp_x86.exe
+            dist/yt-dlp${{ matrix.suffix }}.exe
+            dist/yt-dlp_win${{ matrix.suffix }}.zip
           compression-level: 0
 
+      - name: Cleanup cache
+        if: |
+          matrix.arch == 'arm64' && steps.restore-cache.outputs.cache-hit == 'true'
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          cache_key: cache-reqs-${{ github.job }}_${{ matrix.arch }}-${{ matrix.python_version }}-${{ github.ref }}
+        run: |
+          gh cache delete "${cache_key}"
+
+      - name: Cache requirements
+        if: matrix.arch == 'arm64'
+        uses: actions/cache/save@v4
+        with:
+          path: |
+            /yt-dlp-build-venv
+          key: cache-reqs-${{ github.job }}_${{ matrix.arch }}-${{ matrix.python_version }}-${{ github.ref }}
+
   meta_files:
     if: always() && !cancelled()
     needs:
@@ -460,12 +453,11 @@ jobs:
       - linux_static
       - linux_arm
       - macos
-      - macos_legacy
       - windows
-      - windows32
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/download-artifact@v4
+      - name: Download artifacts
+        uses: actions/download-artifact@v4
         with:
           path: artifact
           pattern: build-bin-*
@@ -475,8 +467,12 @@ jobs:
         run: |
           cd ./artifact/
           # make sure SHA sums are also printed to stdout
-          sha256sum * | tee ../SHA2-256SUMS
-          sha512sum * | tee ../SHA2-512SUMS
+          sha256sum -- * | tee ../SHA2-256SUMS
+          sha512sum -- * | tee ../SHA2-512SUMS
+          # also print as permanent annotations to the summary page
+          while read -r shasum; do
+            echo "::notice title=${shasum##* }::sha256: ${shasum% *}"
+          done < ../SHA2-256SUMS
 
       - name: Make Update spec
         run: |
@@ -485,13 +481,33 @@ jobs:
           lock 2022.08.18.36 .+ Python 3\.6
           lock 2023.11.16 (?!win_x86_exe).+ Python 3\.7
           lock 2023.11.16 win_x86_exe .+ Windows-(?:Vista|2008Server)
+          lock 2024.10.22 py2exe .+
+          lock 2024.10.22 linux_(?:armv7l|aarch64)_exe .+-glibc2\.(?:[12]?\d|30)\b
+          lock 2024.10.22 zip Python 3\.8
+          lock 2024.10.22 win(?:_x86)?_exe Python 3\.[78].+ Windows-(?:7-|2008ServerR2)
+          lock 2025.08.11 darwin_legacy_exe .+
           lockV2 yt-dlp/yt-dlp 2022.08.18.36 .+ Python 3\.6
           lockV2 yt-dlp/yt-dlp 2023.11.16 (?!win_x86_exe).+ Python 3\.7
           lockV2 yt-dlp/yt-dlp 2023.11.16 win_x86_exe .+ Windows-(?:Vista|2008Server)
+          lockV2 yt-dlp/yt-dlp 2024.10.22 py2exe .+
+          lockV2 yt-dlp/yt-dlp 2024.10.22 linux_(?:armv7l|aarch64)_exe .+-glibc2\.(?:[12]?\d|30)\b
+          lockV2 yt-dlp/yt-dlp 2024.10.22 zip Python 3\.8
+          lockV2 yt-dlp/yt-dlp 2024.10.22 win(?:_x86)?_exe Python 3\.[78].+ Windows-(?:7-|2008ServerR2)
+          lockV2 yt-dlp/yt-dlp 2025.08.11 darwin_legacy_exe .+
           lockV2 yt-dlp/yt-dlp-nightly-builds 2023.11.15.232826 (?!win_x86_exe).+ Python 3\.7
           lockV2 yt-dlp/yt-dlp-nightly-builds 2023.11.15.232826 win_x86_exe .+ Windows-(?:Vista|2008Server)
+          lockV2 yt-dlp/yt-dlp-nightly-builds 2024.10.22.051025 py2exe .+
+          lockV2 yt-dlp/yt-dlp-nightly-builds 2024.10.22.051025 linux_(?:armv7l|aarch64)_exe .+-glibc2\.(?:[12]?\d|30)\b
+          lockV2 yt-dlp/yt-dlp-nightly-builds 2024.10.22.051025 zip Python 3\.8
+          lockV2 yt-dlp/yt-dlp-nightly-builds 2024.10.22.051025 win(?:_x86)?_exe Python 3\.[78].+ Windows-(?:7-|2008ServerR2)
+          lockV2 yt-dlp/yt-dlp-nightly-builds 2025.08.12.233030 darwin_legacy_exe .+
           lockV2 yt-dlp/yt-dlp-master-builds 2023.11.15.232812 (?!win_x86_exe).+ Python 3\.7
           lockV2 yt-dlp/yt-dlp-master-builds 2023.11.15.232812 win_x86_exe .+ Windows-(?:Vista|2008Server)
+          lockV2 yt-dlp/yt-dlp-master-builds 2024.10.22.045052 py2exe .+
+          lockV2 yt-dlp/yt-dlp-master-builds 2024.10.22.060347 linux_(?:armv7l|aarch64)_exe .+-glibc2\.(?:[12]?\d|30)\b
+          lockV2 yt-dlp/yt-dlp-master-builds 2024.10.22.060347 zip Python 3\.8
+          lockV2 yt-dlp/yt-dlp-master-builds 2024.10.22.060347 win(?:_x86)?_exe Python 3\.[78].+ Windows-(?:7-|2008ServerR2)
+          lockV2 yt-dlp/yt-dlp-master-builds 2025.08.12.232447 darwin_legacy_exe .+
           EOF
 
       - name: Sign checksum files

.github/workflows/codeql.yml

@@ -33,7 +33,7 @@ jobs:
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
-      uses: github/codeql-action/init@v2
+      uses: github/codeql-action/init@v3
       with:
         languages: ${{ matrix.language }}
         # If you wish to specify custom queries, you can do so here or in a config file.
@@ -47,7 +47,7 @@ jobs:
     # Autobuild attempts to build any compiled languages (C/C++, C#, Go, Java, or Swift).
     # If this step fails, then you should remove it and run the build manually (see below)
     - name: Autobuild
-      uses: github/codeql-action/autobuild@v2
+      uses: github/codeql-action/autobuild@v3
 
     # ℹ️ Command-line programs to run using the OS shell.
     # 📚 See https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idstepsrun
@@ -60,6 +60,6 @@ jobs:
     #     ./location_of_script_within_repo/buildscript.sh
 
     - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v2
+      uses: github/codeql-action/analyze@v3
       with:
         category: "/language:${{matrix.language}}"

.github/workflows/core.yml

@@ -6,7 +6,7 @@ on:
       - devscripts/**
       - test/**
       - yt_dlp/**.py
-      - '!yt_dlp/extractor/*.py'
+      - '!yt_dlp/extractor/**.py'
       - yt_dlp/extractor/__init__.py
       - yt_dlp/extractor/common.py
       - yt_dlp/extractor/extractors.py
@@ -16,7 +16,7 @@ on:
       - devscripts/**
       - test/**
       - yt_dlp/**.py
-      - '!yt_dlp/extractor/*.py'
+      - '!yt_dlp/extractor/**.py'
       - yt_dlp/extractor/__init__.py
       - yt_dlp/extractor/common.py
       - yt_dlp/extractor/extractors.py
@@ -36,16 +36,20 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]
-        # CPython 3.8 is in quick-test
-        python-version: ['3.9', '3.10', '3.11', '3.12', pypy-3.8, pypy-3.10]
+        # CPython 3.9 is in quick-test
+        python-version: ['3.10', '3.11', '3.12', '3.13', pypy-3.11]
         include:
         # atleast one of each CPython/PyPy tests must be in windows
         - os: windows-latest
-          python-version: '3.8'
+          python-version: '3.9'
+        - os: windows-latest
+          python-version: '3.10'
         - os: windows-latest
           python-version: '3.12'
         - os: windows-latest
-          python-version: pypy-3.9
+          python-version: '3.13'
+        - os: windows-latest
+          python-version: pypy-3.11
     steps:
     - uses: actions/checkout@v4
     - name: Set up Python ${{ matrix.python-version }}
@@ -55,7 +59,8 @@ jobs:
     - name: Install test requirements
       run: python3 ./devscripts/install_deps.py --include test --include curl-cffi
     - name: Run tests
+      timeout-minutes: 15
       continue-on-error: False
       run: |
         python3 -m yt_dlp -v || true  # Print debug head
-        python3 ./devscripts/run_tests.py core
+        python3 ./devscripts/run_tests.py --pytest-args '--reruns 2 --reruns-delay 3.0' core

.github/workflows/download.yml

@@ -28,13 +28,13 @@ jobs:
       fail-fast: true
       matrix:
         os: [ubuntu-latest]
-        python-version: ['3.10', '3.11', '3.12', pypy-3.8, pypy-3.10]
+        python-version: ['3.10', '3.11', '3.12', '3.13', pypy-3.11]
         include:
         # atleast one of each CPython/PyPy tests must be in windows
         - os: windows-latest
-          python-version: '3.8'
+          python-version: '3.9'
         - os: windows-latest
-          python-version: pypy-3.9
+          python-version: pypy-3.11
     steps:
     - uses: actions/checkout@v4
     - name: Set up Python ${{ matrix.python-version }}

.github/workflows/issue-lockdown.yml

@@ -0,0 +1,21 @@
+name: Issue Lockdown
+on:
+  issues:
+    types: [opened]
+
+permissions:
+  issues: write
+
+jobs:
+  lockdown:
+    name: Issue Lockdown
+    if: vars.ISSUE_LOCKDOWN
+    runs-on: ubuntu-latest
+    steps:
+      - name: "Lock new issue"
+        env:
+          GH_TOKEN: ${{ github.token }}
+          ISSUE_NUMBER: ${{ github.event.issue.number }}
+          REPOSITORY: ${{ github.repository }}
+        run: |
+          gh issue lock "${ISSUE_NUMBER}" -R "${REPOSITORY}"

.github/workflows/quick-test.yml

@@ -10,16 +10,17 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
-    - name: Set up Python 3.8
+    - name: Set up Python 3.9
       uses: actions/setup-python@v5
       with:
-        python-version: '3.8'
+        python-version: '3.9'
     - name: Install test requirements
-      run: python3 ./devscripts/install_deps.py --include test
+      run: python3 ./devscripts/install_deps.py -o --include test
     - name: Run tests
+      timeout-minutes: 15
       run: |
         python3 -m yt_dlp -v || true
-        python3 ./devscripts/run_tests.py core
+        python3 ./devscripts/run_tests.py --pytest-args '--reruns 2 --reruns-delay 3.0' core
   check:
     name: Code check
     if: "!contains(github.event.head_commit.message, 'ci skip all')"
@@ -28,7 +29,7 @@ jobs:
     - uses: actions/checkout@v4
     - uses: actions/setup-python@v5
       with:
-        python-version: '3.8'
+        python-version: '3.9'
     - name: Install dev dependencies
       run: python3 ./devscripts/install_deps.py -o --include static-analysis
     - name: Make lazy extractors
@@ -37,3 +38,5 @@ jobs:
       run: ruff check --output-format github .
     - name: Run autopep8
       run: autopep8 --diff .
+    - name: Check file mode
+      run: git ls-files --format="%(objectmode) %(path)" yt_dlp/ | ( ! grep -v "^100644" )

.github/workflows/release-master.yml

@@ -24,6 +24,24 @@ jobs:
       source: master
     permissions:
       contents: write
-      packages: write
+      packages: write  # For package cache
+      actions: write  # For cleaning up cache
       id-token: write  # mandatory for trusted publishing
     secrets: inherit
+
+  publish_pypi:
+    needs: [release]
+    if: vars.MASTER_PYPI_PROJECT != ''
+    runs-on: ubuntu-latest
+    permissions:
+      id-token: write  # mandatory for trusted publishing
+    steps:
+      - name: Download artifacts
+        uses: actions/download-artifact@v4
+        with:
+          path: dist
+          name: build-pypi
+      - name: Publish to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1
+        with:
+          verbose: true

.github/workflows/release-nightly.yml

@@ -37,6 +37,24 @@ jobs:
       source: nightly
     permissions:
       contents: write
-      packages: write
+      packages: write  # For package cache
+      actions: write  # For cleaning up cache
       id-token: write  # mandatory for trusted publishing
     secrets: inherit
+
+  publish_pypi:
+    needs: [release]
+    if: vars.NIGHTLY_PYPI_PROJECT != ''
+    runs-on: ubuntu-latest
+    permissions:
+      id-token: write  # mandatory for trusted publishing
+    steps:
+      - name: Download artifacts
+        uses: actions/download-artifact@v4
+        with:
+          path: dist
+          name: build-pypi
+      - name: Publish to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1
+        with:
+          verbose: true

.github/workflows/release.yml

@@ -2,10 +2,6 @@ name: Release
 on:
   workflow_call:
     inputs:
-      prerelease:
-        required: false
-        default: true
-        type: boolean
       source:
         required: false
         default: ''
@@ -18,6 +14,10 @@ on:
         required: false
         default: ''
         type: string
+      prerelease:
+        required: false
+        default: true
+        type: boolean
   workflow_dispatch:
     inputs:
       source:
@@ -204,7 +204,7 @@ jobs:
           git config --global user.email "41898282+github-actions[bot]@users.noreply.github.com"
           git add -u
           git commit -m "Release ${{ env.version }}" \
-            -m "Created by: ${{ github.event.sender.login }}" -m ":ci skip all :ci run dl"
+            -m "Created by: ${{ github.event.sender.login }}" -m ":ci skip all"
           git push origin --force ${{ github.event.ref }}:release
 
       - name: Get target commitish
@@ -228,7 +228,8 @@ jobs:
       origin: ${{ needs.prepare.outputs.target_repo }}
     permissions:
       contents: read
-      packages: write # For package cache
+      packages: write  # For package cache
+      actions: write  # For cleaning up cache
     secrets:
       GPG_SIGNING_KEY: ${{ secrets.GPG_SIGNING_KEY }}
 
@@ -277,7 +278,17 @@ jobs:
           make clean-cache
           python -m build --no-isolation .
 
+      - name: Upload artifacts
+        if: github.event_name != 'workflow_dispatch'
+        uses: actions/upload-artifact@v4
+        with:
+          name: build-pypi
+          path: |
+            dist/*
+          compression-level: 0
+
       - name: Publish to PyPI
+        if: github.event_name == 'workflow_dispatch'
         uses: pypa/gh-action-pypi-publish@release/v1
         with:
           verbose: true
@@ -324,7 +335,7 @@ jobs:
               "(https://github.com/yt-dlp/yt-dlp-master-builds/releases/latest \"Master builds\")"' || '' }} > ./RELEASE_NOTES
           printf '\n\n' >> ./RELEASE_NOTES
           cat >> ./RELEASE_NOTES << EOF
-          #### A description of the various files are in the [README](https://github.com/${{ github.repository }}#release-files)
+          #### A description of the various files is in the [README](https://github.com/${{ github.repository }}#release-files)
           ---
           $(python ./devscripts/make_changelog.py -vv --collapsible)
           EOF

.github/workflows/sanitize-comment.yml

@@ -0,0 +1,17 @@
+name: Sanitize comment
+
+on:
+  issue_comment:
+    types: [created, edited]
+
+permissions:
+  issues: write
+
+jobs:
+  sanitize-comment:
+    name: Sanitize comment
+    if: vars.SANITIZE_COMMENT && !github.event.issue.pull_request
+    runs-on: ubuntu-latest
+    steps:
+      - name: Sanitize comment
+        uses: yt-dlp/sanitize-comment@v1

.github/workflows/signature-tests.yml

@@ -0,0 +1,41 @@
+name: Signature Tests
+on:
+  push:
+    paths:
+      - .github/workflows/signature-tests.yml
+      - test/test_youtube_signature.py
+      - yt_dlp/jsinterp.py
+  pull_request:
+    paths:
+      - .github/workflows/signature-tests.yml
+      - test/test_youtube_signature.py
+      - yt_dlp/jsinterp.py
+permissions:
+  contents: read
+
+concurrency:
+  group: signature-tests-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
+jobs:
+  tests:
+    name: Signature Tests
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest]
+        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13', pypy-3.11]
+    steps:
+    - uses: actions/checkout@v4
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v5
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Install test requirements
+      run: python3 ./devscripts/install_deps.py --only-optional --include test
+    - name: Run tests
+      timeout-minutes: 15
+      run: |
+        python3 -m yt_dlp -v || true  # Print debug head
+        python3 ./devscripts/run_tests.py test/test_youtube_signature.py

.gitignore

@@ -51,7 +51,6 @@ cookies
 *.srt
 *.ssa
 *.swf
-*.swp
 *.tt
 *.ttml
 *.url
@@ -93,6 +92,7 @@ updates_key.pem
 *.class
 *.isorted
 *.stackdump
+uv.lock
 
 # Generated
 AUTHORS
@@ -105,6 +105,8 @@ README.txt
 *.zsh
 *.spec
 test/testdata/sigs/player-*.js
+test/testdata/thumbnails/empty.webp
+test/testdata/thumbnails/foo\ %d\ bar/foo_%d.*
 
 # Binary
 /youtube-dl
@@ -119,6 +121,7 @@ yt-dlp.zip
 .vscode
 *.sublime-*
 *.code-workspace
+*.swp
 
 # Lazy extractors
 */extractor/lazy_extractors.py

CONTRIBUTING.md

@@ -37,14 +37,18 @@ # OPENING AN ISSUE
 **Please include the full output of yt-dlp when run with `-vU`**, i.e. **add** `-vU` flag to **your command line**, copy the **whole** output and post it in the issue body wrapped in \`\`\` for better formatting. It should look similar to this:
 ```
 $ yt-dlp -vU <your command line>
-[debug] Command-line config: ['-v', 'demo.com']
-[debug] Encodings: locale UTF-8, fs utf-8, out utf-8, pref UTF-8
-[debug] yt-dlp version 2021.09.25 (zip)
-[debug] Python version 3.8.10 (CPython 64bit) - Linux-5.4.0-74-generic-x86_64-with-glibc2.29
-[debug] exe versions: ffmpeg 4.2.4, ffprobe 4.2.4
+[debug] Command-line config: ['-vU', 'https://www.example.com/']
+[debug] Encodings: locale cp65001, fs utf-8, pref cp65001, out utf-8, error utf-8, screen utf-8
+[debug] yt-dlp version nightly@... from yt-dlp/yt-dlp-nightly-builds [1a176d874] (win_exe)
+[debug] Python 3.10.11 (CPython AMD64 64bit) - Windows-10-10.0.20348-SP0 (OpenSSL 1.1.1t  7 Feb 2023)
+[debug] exe versions: ffmpeg 7.0.2 (setts), ffprobe 7.0.2
+[debug] Optional libraries: Cryptodome-3.21.0, brotli-1.1.0, certifi-2024.08.30, curl_cffi-0.5.10, mutagen-1.47.0, requests-2.32.3, sqlite3-3.40.1, urllib3-2.2.3, websockets-13.1
 [debug] Proxy map: {}
-Current Build Hash 25cc412d1d3c0725a1f2f5b7e4682f6fb40e6d15f7024e96f7afd572e9919535
-yt-dlp is up to date (2021.09.25)
+[debug] Request Handlers: urllib, requests, websockets, curl_cffi
+[debug] Loaded 1838 extractors
+[debug] Fetching release info: https://api.github.com/repos/yt-dlp/yt-dlp/releases/latest
+Latest version: nightly@... from yt-dlp/yt-dlp-nightly-builds
+yt-dlp is up to date (nightly@... from yt-dlp/yt-dlp-nightly-builds)
 ...
 ```
 **Do not post screenshots of verbose logs; only plain text is acceptable.**
@@ -122,12 +126,12 @@ ### Are you willing to share account details if needed?
 While these steps won't necessarily ensure that no misuse of the account takes place, these are still some good practices to follow.
 
 - Look for people with `Member` (maintainers of the project) or `Contributor` (people who have previously contributed code) tag on their messages.
-- Change the password before sharing the account to something random (use [this](https://passwordsgenerator.net/) if you don't have a random password generator).
+- Change the password before sharing the account to something random.
 - Change the password after receiving the account back.
 
 ### Is the website primarily used for piracy?
 
-We follow [youtube-dl's policy](https://github.com/ytdl-org/youtube-dl#can-you-add-support-for-this-anime-video-site-or-site-which-shows-current-movies-for-free) to not support services that is primarily used for infringing copyright. Additionally, it has been decided to not to support porn sites that specialize in fakes. We also cannot support any service that serves only [DRM protected content](https://en.wikipedia.org/wiki/Digital_rights_management). 
+We follow [youtube-dl's policy](https://github.com/ytdl-org/youtube-dl#can-you-add-support-for-this-anime-video-site-or-site-which-shows-current-movies-for-free) to not support services that is primarily used for infringing copyright. Additionally, it has been decided to not to support porn sites that specialize in fakes. We also cannot support any service that serves only [DRM protected content](https://en.wikipedia.org/wiki/Digital_rights_management).
 
 
 
@@ -215,8 +219,8 @@ ## Adding support for a new site
 
     ```python
     from .common import InfoExtractor
-    
-    
+
+
     class YourExtractorIE(InfoExtractor):
         _VALID_URL = r'https?://(?:www\.)?yourextractor\.com/watch/(?P<id>[0-9]+)'
         _TESTS = [{
@@ -233,7 +237,7 @@ ## Adding support for a new site
                 # * MD5 checksum; start the string with 'md5:', e.g.
                 #     'description': 'md5:098f6bcd4621d373cade4e832627b4f6',
                 # * A regular expression; start the string with 're:', e.g.
-                #     'thumbnail': r're:^https?://.*\.jpg$',
+                #     'thumbnail': r're:https?://.*\.jpg$',
                 # * A count of elements in a list; start the string with 'count:', e.g.
                 #     'tags': 'count:10',
                 # * Any Python type, e.g.
@@ -244,7 +248,7 @@ ## Adding support for a new site
         def _real_extract(self, url):
             video_id = self._match_id(url)
             webpage = self._download_webpage(url, video_id)
-    
+
             # TODO more code goes here, for example ...
             title = self._html_search_regex(r'<h1>(.+?)</h1>', webpage, 'title')
 
@@ -266,9 +270,9 @@ ## Adding support for a new site
     $ hatch fmt --check
     ```
 
-    You can use `hatch fmt` to automatically fix problems.
+    You can use `hatch fmt` to automatically fix problems. Rules that the linter/formatter enforces should not be disabled with `# noqa` unless a maintainer requests it. The only exception allowed is for old/printf-style string formatting in GraphQL query templates (use `# noqa: UP031`).
 
-1. Make sure your code works under all [Python](https://www.python.org/) versions supported by yt-dlp, namely CPython and PyPy for Python 3.8 and above. Backward compatibility is not required for even older versions of Python.
+1. Make sure your code works under all [Python](https://www.python.org/) versions supported by yt-dlp, namely CPython >=3.9 and PyPy >=3.11. Backward compatibility is not required for even older versions of Python.
 1. When the tests pass, [add](https://git-scm.com/docs/git-add) the new files, [commit](https://git-scm.com/docs/git-commit) them and [push](https://git-scm.com/docs/git-push) the result, like this:
 
     ```shell
@@ -302,10 +306,9 @@ ### Mandatory and optional metafields
 For extraction to work yt-dlp relies on metadata your extractor extracts and provides to yt-dlp expressed by an [information dictionary](yt_dlp/extractor/common.py#L119-L440) or simply *info dict*. Only the following meta fields in the *info dict* are considered mandatory for a successful extraction process by yt-dlp:
 
  - `id` (media identifier)
- - `title` (media title)
  - `url` (media download URL) or `formats`
 
-The aforementioned metafields are the critical data that the extraction does not make any sense without and if any of them fail to be extracted then the extractor is considered completely broken. While all extractors must return a `title`, they must also allow it's extraction to be non-fatal.
+The aforementioned metadata fields are the critical data without which extraction does not make any sense. If any of them fail to be extracted, then the extractor is considered broken. All other metadata extraction should be completely non-fatal.
 
 For pornographic sites, appropriate `age_limit` must also be returned.
 
@@ -320,7 +323,7 @@ #### Example
 ```python
 meta = self._download_json(url, video_id)
 ```
-    
+
 Assume at this point `meta`'s layout is:
 
 ```python
@@ -750,7 +753,7 @@ ### Use convenience conversion and parsing functions
 
 Use `traverse_obj` and `try_call` (superseeds `dict_get` and `try_get`) for safe metadata extraction from parsed JSON.
 
-Use `unified_strdate` for uniform `upload_date` or any `YYYYMMDD` meta field extraction, `unified_timestamp` for uniform `timestamp` extraction, `parse_filesize` for `filesize` extraction, `parse_count` for count meta fields extraction, `parse_resolution`, `parse_duration` for `duration` extraction, `parse_age_limit` for `age_limit` extraction. 
+Use `unified_strdate` for uniform `upload_date` or any `YYYYMMDD` meta field extraction, `unified_timestamp` for uniform `timestamp` extraction, `parse_filesize` for `filesize` extraction, `parse_count` for count meta fields extraction, `parse_resolution`, `parse_duration` for `duration` extraction, `parse_age_limit` for `age_limit` extraction.
 
 Explore [`yt_dlp/utils/`](yt_dlp/utils/) for more useful convenience functions.
 

CONTRIBUTORS

@@ -4,6 +4,7 @@ coletdjnz/colethedj (collaborator)
 Ashish0804 (collaborator)
 bashonly (collaborator)
 Grub4K (collaborator)
+seproDev (collaborator)
 h-h-h-h
 pauldubois98
 nixxo
@@ -403,7 +404,6 @@ rebane2001
 road-master
 rohieb
 sdht0
-seproDev
 Hill-98
 LXYan2333
 mushbite
@@ -631,3 +631,178 @@ voidful
 vtexier
 WyohKnott
 trueauracoral
+ASertacAkkaya
+axpauls
+chilinux
+hafeoz
+JSubelj
+jucor
+megumintyan
+mgedmin
+Niluge-KiWi
+peisenwang
+TheZ3ro
+tippfehlr
+varunchopra
+DrakoCpp
+PatrykMis
+DinhHuy2010
+exterrestris
+harbhim
+LeSuisse
+DunnesH
+iancmy
+mokrueger
+luvyana
+szantnerb
+hugepower
+scribblemaniac
+Codenade
+Demon000
+Deukhoofd
+grqz
+hibes
+Khaoklong51
+kieraneglin
+lengzuo
+naglis
+ndyanx
+otovalek
+quad
+rakslice
+sahilsinghss73
+tony-hn
+xingchensong
+BallzCrasher
+coreywright
+eric321
+poyhen
+tetra-fox
+444995
+63427083
+allendema
+DarkZeros
+DTrombett
+imranh2
+KarboniteKream
+mikkovedru
+pktiuk
+rubyevadestaxes
+avagordon01
+CounterPillow
+JoseAngelB
+KBelmin
+kesor
+MellowKyler
+Wesley107772
+a13ssandr0
+ChocoLZS
+doe1080
+hugovdev
+jshumphrey
+julionc
+manavchaudhary1
+powergold1
+Sakura286
+SamDecrock
+stratus-ss
+subrat-lima
+gitninja1234
+jkruse
+xiaomac
+wesson09
+Crypto90
+MutantPiggieGolem1
+Sanceilaks
+Strkmn
+0x9fff00
+4ft35t
+7x11x13
+b5i
+cotko
+d3d9
+Dioarya
+finch71
+hexahigh
+InvalidUsernameException
+jixunmoe
+knackku
+krandor
+kvk-2015
+lonble
+msm595
+n10dollar
+NecroRomnt
+pjrobertson
+subsense
+test20140
+arantius
+entourage8
+lfavole
+mp3butcher
+slipinthedove
+YoshiTabletopGamer
+Arc8ne
+benfaerber
+chrisellsworth
+fries1234
+Kenshin9977
+MichaelDeBoey
+msikma
+pedro
+pferreir
+red-acid
+refack
+rysson
+somini
+thedenv
+vallovic
+arabcoders
+mireq
+mlabeeb03
+1271
+CasperMcFadden95
+Kicer86
+Kiritomo
+leeblackc
+meGAmeS1
+NeonMan
+pj47x
+troex
+WouterGordts
+baierjan
+GeoffreyFrogeye
+Pawka
+v3DJG6GL
+yozel
+brian6932
+iednod55
+maxbin123
+nullpos
+anlar
+eason1478
+ceandreasen
+chauhantirth
+helpimnotdrowning
+adamralph
+averageFOSSenjoyer
+bubo
+flanter21
+Georift
+moonshinerd
+R0hanW
+ShockedPlot7560
+swayll
+atsushi2965
+barryvan
+injust
+iribeirocampos
+rolandcrosby
+Sojiroh
+tchebb
+AzartX47
+e2dk4r
+junyilou
+PierreMesure
+Randalix
+runarmod

Collaborators.md

@@ -61,3 +61,10 @@ ## [Grub4K](https://github.com/Grub4K)
 * Reworked internals like `traverse_obj`, various core refactors and bugs fixes
 * Implemented proper progress reporting for parallel downloads
 * Improved/fixed/added Bundestag, crunchyroll, pr0gramm, Twitter, WrestleUniverse etc
+
+
+## [sepro](https://github.com/seproDev)
+
+* UX improvements: Warn when ffmpeg is missing, warn when double-clicking exe
+* Code cleanup: Remove dead extractors, mark extractors as broken, enable/apply ruff rules
+* Improved/fixed/added ArdMediathek, DRTV, Floatplane, MagentaMusik, Naver, Nebula, OnDemandKorea, Vbox7 etc

Makefile

@@ -18,10 +18,11 @@ pypi-files: AUTHORS Changelog.md LICENSE README.md README.txt supportedsites \
         tar pypi-files lazy-extractors install uninstall
 
 clean-test:
-	rm -rf test/testdata/sigs/player-*.js tmp/ *.annotations.xml *.aria2 *.description *.dump *.frag \
+	rm -rf tmp/ *.annotations.xml *.aria2 *.description *.dump *.frag \
 	*.frag.aria2 *.frag.urls *.info.json *.live_chat.json *.meta *.part* *.tmp *.temp *.unknown_video *.ytdl \
 	*.3gp *.ape *.ass *.avi *.desktop *.f4v *.flac *.flv *.gif *.jpeg *.jpg *.lrc *.m4a *.m4v *.mhtml *.mkv *.mov *.mp3 *.mp4 \
-	*.mpg *.mpga *.oga *.ogg *.opus *.png *.sbv *.srt *.ssa *.swf *.swp *.tt *.ttml *.url *.vtt *.wav *.webloc *.webm *.webp
+	*.mpg *.mpga *.oga *.ogg *.opus *.png *.sbv *.srt *.ssa *.swf *.tt *.ttml *.url *.vtt *.wav *.webloc *.webm *.webp \
+	test/testdata/sigs/player-*.js test/testdata/thumbnails/empty.webp "test/testdata/thumbnails/foo %d bar/foo_%d."*
 clean-dist:
 	rm -rf yt-dlp.1.temp.md yt-dlp.1 README.txt MANIFEST build/ dist/ .coverage cover/ yt-dlp.tar.gz completions/ \
 	yt_dlp/extractor/lazy_extractors.py *.spec CONTRIBUTING.md.tmp yt-dlp yt-dlp.exe yt_dlp.egg-info/ AUTHORS

README.md

@@ -4,9 +4,8 @@
 [![YT-DLP](https://raw.githubusercontent.com/yt-dlp/yt-dlp/master/.github/banner.svg)](#readme)
 
 [![Release version](https://img.shields.io/github/v/release/yt-dlp/yt-dlp?color=brightgreen&label=Download&style=for-the-badge)](#installation "Installation")
-[![PyPi](https://img.shields.io/badge/-PyPi-blue.svg?logo=pypi&labelColor=555555&style=for-the-badge)](https://pypi.org/project/yt-dlp "PyPi")
+[![PyPI](https://img.shields.io/badge/-PyPI-blue.svg?logo=pypi&labelColor=555555&style=for-the-badge)](https://pypi.org/project/yt-dlp "PyPI")
 [![Donate](https://img.shields.io/badge/_-Donate-red.svg?logo=githubsponsors&labelColor=555555&style=for-the-badge)](Collaborators.md#collaborators "Donate")
-[![Matrix](https://img.shields.io/matrix/yt-dlp:matrix.org?color=brightgreen&labelColor=555555&label=&logo=element&style=for-the-badge)](https://matrix.to/#/#yt-dlp:matrix.org "Matrix")
 [![Discord](https://img.shields.io/discord/807245652072857610?color=blue&labelColor=555555&label=&logo=discord&style=for-the-badge)](https://discord.gg/H5MNcFW63r "Discord")
 [![Supported Sites](https://img.shields.io/badge/-Supported_Sites-brightgreen.svg?style=for-the-badge)](supportedsites.md "Supported Sites")
 [![License: Unlicense](https://img.shields.io/badge/-Unlicense-blue.svg?style=for-the-badge)](LICENSE "License")
@@ -45,6 +44,7 @@
     * [Post-processing Options](#post-processing-options)
     * [SponsorBlock Options](#sponsorblock-options)
     * [Extractor Options](#extractor-options)
+    * [Preset Aliases](#preset-aliases)
 * [CONFIGURATION](#configuration)
     * [Configuration file encoding](#configuration-file-encoding)
     * [Authentication with netrc](#authentication-with-netrc)
@@ -81,7 +81,7 @@ # INSTALLATION
 [![Windows](https://img.shields.io/badge/-Windows_x64-blue.svg?style=for-the-badge&logo=windows)](https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp.exe)
 [![Unix](https://img.shields.io/badge/-Linux/BSD-red.svg?style=for-the-badge&logo=linux)](https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp)
 [![MacOS](https://img.shields.io/badge/-MacOS-lightblue.svg?style=for-the-badge&logo=apple)](https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp_macos)
-[![PyPi](https://img.shields.io/badge/-PyPi-blue.svg?logo=pypi&labelColor=555555&style=for-the-badge)](https://pypi.org/project/yt-dlp)
+[![PyPI](https://img.shields.io/badge/-PyPI-blue.svg?logo=pypi&labelColor=555555&style=for-the-badge)](https://pypi.org/project/yt-dlp)
 [![Source Tarball](https://img.shields.io/badge/-Source_tar-green.svg?style=for-the-badge)](https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp.tar.gz)
 [![Other variants](https://img.shields.io/badge/-Other-grey.svg?style=for-the-badge)](#release-files)
 [![All versions](https://img.shields.io/badge/-All_Versions-lightgrey.svg?style=for-the-badge)](https://github.com/yt-dlp/yt-dlp/releases)
@@ -98,21 +98,22 @@ #### Recommended
 File|Description
 :---|:---
 [yt-dlp](https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp)|Platform-independent [zipimport](https://docs.python.org/3/library/zipimport.html) binary. Needs Python (recommended for **Linux/BSD**)
-[yt-dlp.exe](https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp.exe)|Windows (Win7 SP1+) standalone x64 binary (recommended for **Windows**)
+[yt-dlp.exe](https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp.exe)|Windows (Win8+) standalone x64 binary (recommended for **Windows**)
 [yt-dlp_macos](https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp_macos)|Universal MacOS (10.15+) standalone executable (recommended for **MacOS**)
 
 #### Alternatives
 
 File|Description
 :---|:---
-[yt-dlp_x86.exe](https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp_x86.exe)|Windows (Win7 SP1+) standalone x86 (32-bit) binary
-[yt-dlp_min.exe](https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp_min.exe)|Windows (Win7 SP1+) standalone x64 binary built with `py2exe`<br/> ([Not recommended](#standalone-py2exe-builds-windows))
+[yt-dlp_x86.exe](https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp_x86.exe)|Windows (Win8+) standalone x86 (32-bit) binary
+[yt-dlp_arm64.exe](https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp_arm64.exe)|Windows (Win10+) standalone arm64 (64-bit) binary
 [yt-dlp_linux](https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp_linux)|Linux standalone x64 binary
 [yt-dlp_linux_armv7l](https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp_linux_armv7l)|Linux standalone armv7l (32-bit) binary
 [yt-dlp_linux_aarch64](https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp_linux_aarch64)|Linux standalone aarch64 (64-bit) binary
-[yt-dlp_win.zip](https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp_win.zip)|Unpackaged Windows executable (no auto-update)
+[yt-dlp_win.zip](https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp_win.zip)|Unpackaged Windows (Win8+) x64 executable (no auto-update)
+[yt-dlp_win_x86.zip](https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp_win_x86.zip)|Unpackaged Windows (Win8+) x86 executable (no auto-update)
+[yt-dlp_win_arm64.zip](https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp_win_arm64.zip)|Unpackaged Windows (Win10+) arm64 executable (no auto-update)
 [yt-dlp_macos.zip](https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp_macos.zip)|Unpackaged MacOS (10.15+) executable (no auto-update)
-[yt-dlp_macos_legacy](https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp_macos_legacy)|MacOS (10.9+) standalone x64 executable
 
 #### Misc
 
@@ -141,7 +142,7 @@ ## UPDATE
 
 If you [installed with pip](https://github.com/yt-dlp/yt-dlp/wiki/Installation#with-pip), simply re-run the same command that was used to install the program
 
-For other third-party package managers, see [the wiki](https://github.com/yt-dlp/yt-dlp/wiki/Installation#third-party-package-managers) or refer their documentation
+For other third-party package managers, see [the wiki](https://github.com/yt-dlp/yt-dlp/wiki/Installation#third-party-package-managers) or refer to their documentation
 
 <a id="update-channels"></a>
 
@@ -172,22 +173,25 @@ # To install nightly with pip:
 python3 -m pip install -U --pre "yt-dlp[default]"
 ```
 
+When running a yt-dlp version that is older than 90 days, you will see a warning message suggesting to update to the latest version.
+You can suppress this warning by adding `--no-update` to your command or configuration file.
+
 ## DEPENDENCIES
-Python versions 3.8+ (CPython and PyPy) are supported. Other versions and implementations may or may not work correctly.
+Python versions 3.9+ (CPython) and 3.11+ (PyPy) are supported. Other versions and implementations may or may not work correctly.
 
 <!-- Python 3.5+ uses VC++14 and it is already embedded in the binary created
 <!x-- https://www.microsoft.com/en-us/download/details.aspx?id=26999 --x>
-On windows, [Microsoft Visual C++ 2010 SP1 Redistributable Package (x86)](https://download.microsoft.com/download/1/6/5/165255E7-1014-4D0A-B094-B6A430A6BFFC/vcredist_x86.exe) is also necessary to run yt-dlp. You probably already have this, but if the executable throws an error due to missing `MSVCR100.dll` you need to install it manually.
+On Windows, [Microsoft Visual C++ 2010 SP1 Redistributable Package (x86)](https://download.microsoft.com/download/1/6/5/165255E7-1014-4D0A-B094-B6A430A6BFFC/vcredist_x86.exe) is also necessary to run yt-dlp. You probably already have this, but if the executable throws an error due to missing `MSVCR100.dll` you need to install it manually.
 -->
 
 While all the other dependencies are optional, `ffmpeg` and `ffprobe` are highly recommended
 
 ### Strongly recommended
 
-* [**ffmpeg** and **ffprobe**](https://www.ffmpeg.org) - Required for [merging separate video and audio files](#format-selection) as well as for various [post-processing](#post-processing-options) tasks. License [depends on the build](https://www.ffmpeg.org/legal.html)
+* [**ffmpeg** and **ffprobe**](https://www.ffmpeg.org) - Required for [merging separate video and audio files](#format-selection), as well as for various [post-processing](#post-processing-options) tasks. License [depends on the build](https://www.ffmpeg.org/legal.html)
 
     There are bugs in ffmpeg that cause various issues when used alongside yt-dlp. Since ffmpeg is such an important dependency, we provide [custom builds](https://github.com/yt-dlp/FFmpeg-Builds#ffmpeg-static-auto-builds) with patches for some of these issues at [yt-dlp/FFmpeg-Builds](https://github.com/yt-dlp/FFmpeg-Builds). See [the readme](https://github.com/yt-dlp/FFmpeg-Builds#patches-applied) for details on the specific issues solved by these builds
-    
+
     **Important**: What you need is ffmpeg *binary*, **NOT** [the Python package of the same name](https://pypi.org/project/ffmpeg)
 
 ### Networking
@@ -198,18 +202,18 @@ ### Networking
 
 #### Impersonation
 
-The following provide support for impersonating browser requests. This may be required for some sites that employ TLS fingerprinting. 
+The following provide support for impersonating browser requests. This may be required for some sites that employ TLS fingerprinting.
 
-* [**curl_cffi**](https://github.com/yifeikong/curl_cffi) (recommended) - Python binding for [curl-impersonate](https://github.com/lwthiker/curl-impersonate). Provides impersonation targets for Chrome, Edge and Safari. Licensed under [MIT](https://github.com/yifeikong/curl_cffi/blob/main/LICENSE)
+* [**curl_cffi**](https://github.com/lexiforest/curl_cffi) (recommended) - Python binding for [curl-impersonate](https://github.com/lexiforest/curl-impersonate). Provides impersonation targets for Chrome, Edge and Safari. Licensed under [MIT](https://github.com/lexiforest/curl_cffi/blob/main/LICENSE)
   * Can be installed with the `curl-cffi` group, e.g. `pip install "yt-dlp[default,curl-cffi]"`
-  * Currently only included in `yt-dlp.exe` and `yt-dlp_macos` builds
+  * Currently included in `yt-dlp.exe`, `yt-dlp_linux` and `yt-dlp_macos` builds
 
 
 ### Metadata
 
 * [**mutagen**](https://github.com/quodlibet/mutagen)\* - For `--embed-thumbnail` in certain formats. Licensed under [GPLv2+](https://github.com/quodlibet/mutagen/blob/master/COPYING)
 * [**AtomicParsley**](https://github.com/wez/atomicparsley) - For `--embed-thumbnail` in `mp4`/`m4a` files when `mutagen`/`ffmpeg` cannot. Licensed under [GPLv2+](https://github.com/wez/atomicparsley/blob/master/COPYING)
-* [**xattr**](https://github.com/xattr/xattr), [**pyxattr**](https://github.com/iustin/pyxattr) or [**setfattr**](http://savannah.nongnu.org/projects/attr) - For writing xattr metadata (`--xattr`) on **Mac** and **BSD**. Licensed under [MIT](https://github.com/xattr/xattr/blob/master/LICENSE.txt), [LGPL2.1](https://github.com/iustin/pyxattr/blob/master/COPYING) and [GPLv2+](http://git.savannah.nongnu.org/cgit/attr.git/tree/doc/COPYING) respectively
+* [**xattr**](https://github.com/xattr/xattr), [**pyxattr**](https://github.com/iustin/pyxattr) or [**setfattr**](http://savannah.nongnu.org/projects/attr) - For writing xattr metadata (`--xattrs`) on **Mac** and **BSD**. Licensed under [MIT](https://github.com/xattr/xattr/blob/master/LICENSE.txt), [LGPL2.1](https://github.com/iustin/pyxattr/blob/master/COPYING) and [GPLv2+](http://git.savannah.nongnu.org/cgit/attr.git/tree/doc/COPYING) respectively
 
 ### Misc
 
@@ -254,31 +258,19 @@ ### Standalone PyInstaller Builds
 **Important**: Running `pyinstaller` directly **instead of** using `python -m bundle.pyinstaller` is **not** officially supported. This may or may not work correctly.
 
 ### Platform-independent Binary (UNIX)
-You will need the build tools `python` (3.8+), `zip`, `make` (GNU), `pandoc`\* and `pytest`\*.
+You will need the build tools `python` (3.9+), `zip`, `make` (GNU), `pandoc`\* and `pytest`\*.
 
 After installing these, simply run `make`.
 
 You can also run `make yt-dlp` instead to compile only the binary without updating any of the additional files. (The build tools marked with **\*** are not needed for this)
 
-### Standalone Py2Exe Builds (Windows)
-
-While we provide the option to build with [py2exe](https://www.py2exe.org), it is recommended to build [using PyInstaller](#standalone-pyinstaller-builds) instead since the py2exe builds **cannot contain `pycryptodomex`/`certifi` and need VC++14** on the target computer to run.
-
-If you wish to build it anyway, install Python (if it is not already installed) and you can run the following commands:
-
-```
-py devscripts/install_deps.py --include py2exe
-py devscripts/make_lazy_extractors.py
-py -m bundle.py2exe
-```
-
 ### Related scripts
 
 * **`devscripts/install_deps.py`** - Install dependencies for yt-dlp.
-* **`devscripts/update-version.py`** - Update the version number based on current date.
+* **`devscripts/update-version.py`** - Update the version number based on the current date.
 * **`devscripts/set-variant.py`** - Set the build variant of the executable.
 * **`devscripts/make_changelog.py`** - Create a markdown changelog using short commit messages and update `CONTRIBUTORS` file.
-* **`devscripts/make_lazy_extractors.py`** - Create lazy extractors. Running this before building the binaries (any variant) will improve their startup performance. Set the environment variable `YTDLP_NO_LAZY_EXTRACTORS=1` if you wish to forcefully disable lazy extractor loading.
+* **`devscripts/make_lazy_extractors.py`** - Create lazy extractors. Running this before building the binaries (any variant) will improve their startup performance. Set the environment variable `YTDLP_NO_LAZY_EXTRACTORS` to something nonempty to forcefully disable lazy extractor loading.
 
 Note: See their `--help` for more info.
 
@@ -290,7 +282,7 @@ # USAGE AND OPTIONS
 <!-- MANPAGE: BEGIN EXCLUDED SECTION -->
     yt-dlp [OPTIONS] [--] URL [URL...]
 
-`Ctrl+F` is your friend :D
+Tip: Use `CTRL`+`F` (or `Command`+`F`)  to search by keywords
 <!-- MANPAGE: END EXCLUDED SECTION -->
 
 <!-- Auto generated -->
@@ -348,13 +340,22 @@ ## General Options:
                                     containing directory ("-" for stdin). Can be
                                     used multiple times and inside other
                                     configuration files
-    --flat-playlist                 Do not extract the videos of a playlist,
-                                    only list them
+    --plugin-dirs PATH              Path to an additional directory to search
+                                    for plugins. This option can be used
+                                    multiple times to add multiple directories.
+                                    Use "default" to search the default plugin
+                                    directories (default)
+    --no-plugin-dirs                Clear plugin directories to search,
+                                    including defaults and those provided by
+                                    previous --plugin-dirs
+    --flat-playlist                 Do not extract a playlist's URL result
+                                    entries; some entry metadata may be missing
+                                    and downloading may be bypassed
     --no-flat-playlist              Fully extract the videos of a playlist
                                     (default)
     --live-from-start               Download livestreams from the start.
-                                    Currently only supported for YouTube
-                                    (Experimental)
+                                    Currently experimental and only supported
+                                    for YouTube and Twitch
     --no-live-from-start            Download livestreams from the current time
                                     (default)
     --wait-for-video MIN[-MAX]      Wait for scheduled streams to become
@@ -368,7 +369,9 @@ ## General Options:
                                     stderr) to apply the setting to. Can be one
                                     of "always", "auto" (default), "never", or
                                     "no_color" (use non color terminal
-                                    sequences). Can be used multiple times
+                                    sequences). Use "auto-tty" or "no_color-tty"
+                                    to decide based on terminal support only.
+                                    Can be used multiple times
     --compat-options OPTS           Options that can help keep compatibility
                                     with youtube-dl or youtube-dlc
                                     configurations by reverting some of the
@@ -378,17 +381,23 @@ ## General Options:
                                     an alias starts with a dash "-", it is
                                     prefixed with "--". Arguments are parsed
                                     according to the Python string formatting
-                                    mini-language. E.g. --alias get-audio,-X
-                                    "-S=aext:{0},abr -x --audio-format {0}"
-                                    creates options "--get-audio" and "-X" that
-                                    takes an argument (ARG0) and expands to
-                                    "-S=aext:ARG0,abr -x --audio-format ARG0".
-                                    All defined aliases are listed in the --help
+                                    mini-language. E.g. --alias get-audio,-X "-S
+                                    aext:{0},abr -x --audio-format {0}" creates
+                                    options "--get-audio" and "-X" that takes an
+                                    argument (ARG0) and expands to "-S
+                                    aext:ARG0,abr -x --audio-format ARG0". All
+                                    defined aliases are listed in the --help
                                     output. Alias options can trigger more
                                     aliases; so be careful to avoid defining
                                     recursive options. As a safety measure, each
                                     alias may be triggered a maximum of 100
                                     times. This option can be used multiple times
+    -t, --preset-alias PRESET       Applies a predefined set of options. e.g.
+                                    --preset-alias mp3. The following presets
+                                    are available: mp3, aac, mp4, mkv, sleep.
+                                    See the "Preset Aliases" section at the end
+                                    for more info. This option can be used
+                                    multiple times
 
 ## Network Options:
     --proxy URL                     Use the specified HTTP/HTTPS/SOCKS proxy. To
@@ -442,10 +451,10 @@ ## Video Selection:
                                     E.g. "--date today-2weeks" downloads only
                                     videos uploaded on the same day two weeks ago
     --datebefore DATE               Download only videos uploaded on or before
-                                    this date. The date formats accepted is the
+                                    this date. The date formats accepted are the
                                     same as --date
     --dateafter DATE                Download only videos uploaded on or after
-                                    this date. The date formats accepted is the
+                                    this date. The date formats accepted are the
                                     same as --date
     --match-filters FILTER          Generic video filter. Any "OUTPUT TEMPLATE"
                                     field can be compared with a number or a
@@ -456,18 +465,18 @@ ## Video Selection:
                                     is not present, and "&" to check multiple
                                     conditions. Use a "\" to escape "&" or
                                     quotes if needed. If used multiple times,
-                                    the filter matches if atleast one of the
-                                    conditions are met. E.g. --match-filter
-                                    !is_live --match-filter "like_count>?100 &
+                                    the filter matches if at least one of the
+                                    conditions is met. E.g. --match-filters
+                                    !is_live --match-filters "like_count>?100 &
                                     description~='(?i)\bcats \& dogs\b'" matches
                                     only videos that are not live OR those that
                                     have a like count more than 100 (or the like
                                     field is not available) and also has a
                                     description that contains the phrase "cats &
-                                    dogs" (caseless). Use "--match-filter -" to
+                                    dogs" (caseless). Use "--match-filters -" to
                                     interactively ask whether to download each
                                     video
-    --no-match-filters              Do not use any --match-filter (default)
+    --no-match-filters              Do not use any --match-filters (default)
     --break-match-filters FILTER    Same as "--match-filters" but stops the
                                     download process when a video is rejected
     --no-break-match-filters        Do not use any --break-match-filters (default)
@@ -483,12 +492,13 @@ ## Video Selection:
     --no-download-archive           Do not use archive file (default)
     --max-downloads NUMBER          Abort after downloading NUMBER files
     --break-on-existing             Stop the download process when encountering
-                                    a file that is in the archive
+                                    a file that is in the archive supplied with
+                                    the --download-archive option
     --no-break-on-existing          Do not stop the download process when
                                     encountering a file that is in the archive
                                     (default)
     --break-per-input               Alters --max-downloads, --break-on-existing,
-                                    --break-match-filter, and autonumber to
+                                    --break-match-filters, and autonumber to
                                     reset per input URL
     --no-break-per-input            --break-on-existing and similar options
                                     terminates the entire download queue
@@ -615,8 +625,7 @@ ## Filesystem Options:
     --no-restrict-filenames         Allow Unicode characters, "&" and spaces in
                                     filenames (default)
     --windows-filenames             Force filenames to be Windows-compatible
-    --no-windows-filenames          Make filenames Windows-compatible only if
-                                    using Windows (default)
+    --no-windows-filenames          Sanitize filenames only minimally
     --trim-filenames LENGTH         Limit the filename length (excluding
                                     extension) to the specified number of
                                     characters
@@ -635,9 +644,9 @@ ## Filesystem Options:
     --no-part                       Do not use .part files - write directly into
                                     output file
     --mtime                         Use the Last-modified header to set the file
-                                    modification time (default)
+                                    modification time
     --no-mtime                      Do not use the Last-modified header to set
-                                    the file modification time
+                                    the file modification time (default)
     --write-description             Write video description to a .description file
     --no-write-description          Do not write video description (default)
     --write-info-json               Write video metadata to a .info.json file
@@ -674,7 +683,7 @@ ## Filesystem Options:
                                     PROFILE to load cookies from, and the
                                     CONTAINER name (if Firefox) ("none" for no
                                     container) can be given with their
-                                    respective seperators. By default, all
+                                    respective separators. By default, all
                                     containers of the most recently accessed
                                     profile are used. Currently supported
                                     keyrings are: basictext, gnomekeyring,
@@ -730,16 +739,16 @@ ## Verbosity and Simulation Options:
                                     used. This option can be used multiple times
     --print-to-file [WHEN:]TEMPLATE FILE
                                     Append given template to the file. The
-                                    values of WHEN and TEMPLATE are same as that
-                                    of --print. FILE uses the same syntax as the
-                                    output template. This option can be used
-                                    multiple times
+                                    values of WHEN and TEMPLATE are the same as
+                                    that of --print. FILE uses the same syntax
+                                    as the output template. This option can be
+                                    used multiple times
     -j, --dump-json                 Quiet, but print JSON information for each
                                     video. Simulate unless --no-simulate is
                                     used. See "OUTPUT TEMPLATE" for a
                                     description of available keys
     -J, --dump-single-json          Quiet, but print JSON information for each
-                                    url or infojson passed. Simulate unless
+                                    URL or infojson passed. Simulate unless
                                     --no-simulate is used. If the URL refers to
                                     a playlist, the whole playlist information
                                     is dumped in a single line
@@ -814,9 +823,9 @@ ## Video Format Options:
     --no-audio-multistreams         Only one audio stream is downloaded for each
                                     output file (default)
     --prefer-free-formats           Prefer video formats with free containers
-                                    over non-free ones of same quality. Use with
-                                    "-S ext" to strictly prefer free containers
-                                    irrespective of quality
+                                    over non-free ones of the same quality. Use
+                                    with "-S ext" to strictly prefer free
+                                    containers irrespective of quality
     --no-prefer-free-formats        Don't give any special preference to free
                                     containers (default)
     --check-formats                 Make sure formats are selected only from
@@ -841,15 +850,17 @@ ## Subtitle Options:
                                     (default) (Alias: --no-write-automatic-subs)
     --list-subs                     List available subtitles of each video.
                                     Simulate unless --no-simulate is used
-    --sub-format FORMAT             Subtitle format; accepts formats preference,
-                                    e.g. "srt" or "ass/srt/best"
+    --sub-format FORMAT             Subtitle format; accepts formats preference
+                                    separated by "/", e.g. "srt" or "ass/srt/best"
     --sub-langs LANGS               Languages of the subtitles to download (can
                                     be regex) or "all" separated by commas, e.g.
-                                    --sub-langs "en.*,ja". You can prefix the
-                                    language code with a "-" to exclude it from
-                                    the requested languages, e.g. --sub-langs
-                                    all,-live_chat. Use --list-subs for a list
-                                    of available language tags
+                                    --sub-langs "en.*,ja" (where "en.*" is a
+                                    regex pattern that matches "en" followed by
+                                    0 or more of any character). You can prefix
+                                    the language code with a "-" to exclude it
+                                    from the requested languages, e.g. --sub-
+                                    langs all,-live_chat. Use --list-subs for a
+                                    list of available language tags
 
 ## Authentication Options:
     -u, --username USERNAME         Login with this account ID
@@ -897,9 +908,9 @@ ## Post-Processing Options:
                                     necessary (currently supported: avi, flv,
                                     gif, mkv, mov, mp4, webm, aac, aiff, alac,
                                     flac, m4a, mka, mp3, ogg, opus, vorbis,
-                                    wav). If target container does not support
-                                    the video/audio codec, remuxing will fail.
-                                    You can specify multiple rules; e.g.
+                                    wav). If the target container does not
+                                    support the video/audio codec, remuxing will
+                                    fail. You can specify multiple rules; e.g.
                                     "aac>m4a/mov>mp4/mkv" will remux aac to m4a,
                                     mov to mp4 and anything else to mkv
     --recode-video FORMAT           Re-encode the video into another format if
@@ -967,29 +978,29 @@ ## Post-Processing Options:
                                     are the same as that of --use-postprocessor
                                     (default: pre_process)
     --xattrs                        Write metadata to the video file's xattrs
-                                    (using dublin core and xdg standards)
+                                    (using Dublin Core and XDG standards)
     --concat-playlist POLICY        Concatenate videos in a playlist. One of
                                     "never", "always", or "multi_video"
                                     (default; only when the videos form a single
-                                    show). All the video files must have same
-                                    codecs and number of streams to be
-                                    concatable. The "pl_video:" prefix can be
+                                    show). All the video files must have the
+                                    same codecs and number of streams to be
+                                    concatenable. The "pl_video:" prefix can be
                                     used with "--paths" and "--output" to set
                                     the output filename for the concatenated
                                     files. See "OUTPUT TEMPLATE" for details
     --fixup POLICY                  Automatically correct known faults of the
                                     file. One of never (do nothing), warn (only
                                     emit a warning), detect_or_warn (the
-                                    default; fix file if we can, warn
-                                    otherwise), force (try fixing even if file
-                                    already exists)
+                                    default; fix the file if we can, warn
+                                    otherwise), force (try fixing even if the
+                                    file already exists)
     --ffmpeg-location PATH          Location of the ffmpeg binary; either the
                                     path to the binary or its containing directory
     --exec [WHEN:]CMD               Execute a command, optionally prefixed with
                                     when to execute it, separated by a ":".
                                     Supported values of "WHEN" are the same as
                                     that of --use-postprocessor (default:
-                                    after_move). Same syntax as the output
+                                    after_move). The same syntax as the output
                                     template can be used to pass any field as
                                     arguments to the command. If no fields are
                                     passed, %(filepath,_filename|)q is appended
@@ -997,12 +1008,16 @@ ## Post-Processing Options:
                                     be used multiple times
     --no-exec                       Remove any previously defined --exec
     --convert-subs FORMAT           Convert the subtitles to another format
-                                    (currently supported: ass, lrc, srt, vtt)
-                                    (Alias: --convert-subtitles)
+                                    (currently supported: ass, lrc, srt, vtt).
+                                    Use "--convert-subs none" to disable
+                                    conversion (default) (Alias: --convert-
+                                    subtitles)
     --convert-thumbnails FORMAT     Convert the thumbnails to another format
                                     (currently supported: jpg, png, webp). You
                                     can specify multiple rules using similar
-                                    syntax as --remux-video
+                                    syntax as "--remux-video". Use "--convert-
+                                    thumbnails none" to disable conversion
+                                    (default)
     --split-chapters                Split video into multiple files based on
                                     internal chapters. The "chapter:" prefix can
                                     be used with "--paths" and "--output" to set
@@ -1023,7 +1038,7 @@ ## Post-Processing Options:
     --no-force-keyframes-at-cuts    Do not force keyframes around the chapters
                                     when cutting/splitting (default)
     --use-postprocessor NAME[:ARGS]
-                                    The (case sensitive) name of plugin
+                                    The (case-sensitive) name of plugin
                                     postprocessors to be enabled, and
                                     (optionally) arguments to be passed to it,
                                     separated by a colon ":". ARGS are a
@@ -1036,8 +1051,8 @@ ## Post-Processing Options:
                                     --print/--output), "before_dl" (before each
                                     video download), "post_process" (after each
                                     video download; default), "after_move"
-                                    (after moving video file to it's final
-                                    locations), "after_video" (after downloading
+                                    (after moving the video file to its final
+                                    location), "after_video" (after downloading
                                     and processing all formats of a video), or
                                     "playlist" (at end of playlist). This option
                                     can be used multiple times to add different
@@ -1055,7 +1070,7 @@ ## SponsorBlock Options:
                                     music_offtopic, poi_highlight, chapter, all
                                     and default (=all). You can prefix the
                                     category with a "-" to exclude it. See [1]
-                                    for description of the categories. E.g.
+                                    for descriptions of the categories. E.g.
                                     --sponsorblock-mark all,-preview
                                     [1] https://wiki.sponsor.ajay.app/w/Segment_Categories
     --sponsorblock-remove CATS      SponsorBlock categories to be removed from
@@ -1087,7 +1102,7 @@ ## Extractor Options:
                                     (Alias: --no-allow-dynamic-mpd)
     --hls-split-discontinuity       Split HLS playlists to different formats at
                                     discontinuities such as ad breaks
-    --no-hls-split-discontinuity    Do not split HLS playlists to different
+    --no-hls-split-discontinuity    Do not split HLS playlists into different
                                     formats at discontinuities such as ad breaks
                                     (default)
     --extractor-args IE_KEY:ARGS    Pass ARGS arguments to the IE_KEY extractor.
@@ -1095,9 +1110,30 @@ ## Extractor Options:
                                     can use this option multiple times to give
                                     arguments for different extractors
 
+## Preset Aliases:
+Predefined aliases for convenience and ease of use. Note that future
+    versions of yt-dlp may add or adjust presets, but the existing preset
+    names will not be changed or removed
+
+    -t mp3                          -f 'ba[acodec^=mp3]/ba/b' -x --audio-format
+                                    mp3
+
+    -t aac                          -f
+                                    'ba[acodec^=aac]/ba[acodec^=mp4a.40.]/ba/b'
+                                    -x --audio-format aac
+
+    -t mp4                          --merge-output-format mp4 --remux-video mp4
+                                    -S vcodec:h264,lang,quality,res,fps,hdr:12,a
+                                    codec:aac
+
+    -t mkv                          --merge-output-format mkv --remux-video mkv
+
+    -t sleep                        --sleep-subtitles 5 --sleep-requests 0.75
+                                    --sleep-interval 10 --max-sleep-interval 20
+
 # CONFIGURATION
 
-You can configure yt-dlp by placing any supported command line option to a configuration file. The configuration is loaded from the following locations:
+You can configure yt-dlp by placing any supported command line option in a configuration file. The configuration is loaded from the following locations:
 
 1. **Main Configuration**:
     * The file given to `--config-location`
@@ -1125,15 +1161,15 @@ # CONFIGURATION
     * `/etc/yt-dlp/config`
     * `/etc/yt-dlp/config.txt`
 
-E.g. with the following configuration file yt-dlp will always extract the audio, not copy the mtime, use a proxy and save all videos under `YouTube` directory in your home directory:
+E.g. with the following configuration file, yt-dlp will always extract the audio, copy the mtime, use a proxy and save all videos under `YouTube` directory in your home directory:
 ```
 # Lines starting with # are comments
 
 # Always extract audio
 -x
 
-# Do not copy the mtime
---no-mtime
+# Copy the mtime
+--mtime
 
 # Use this proxy
 --proxy 127.0.0.1:3128
@@ -1142,7 +1178,7 @@ # Save all videos under YouTube directory in your home directory
 -o ~/YouTube/%(title)s.%(ext)s
 ```
 
-**Note**: Options in configuration file are just the same options aka switches used in regular command line calls; thus there **must be no whitespace** after `-` or `--`, e.g. `-o` or `--proxy` but not `- o` or `-- proxy`. They must also be quoted when necessary as-if it were a UNIX shell.
+**Note**: Options in a configuration file are just the same options aka switches used in regular command line calls; thus there **must be no whitespace** after `-` or `--`, e.g. `-o` or `--proxy` but not `- o` or `-- proxy`. They must also be quoted when necessary, as if it were a UNIX shell.
 
 You can use `--ignore-config` if you want to disable all configuration files for a particular yt-dlp run. If `--ignore-config` is found inside any configuration file, no further configuration will be loaded. For example, having the option in the portable configuration file prevents loading of home, user, and system configurations. Additionally, (for backward compatibility) if `--ignore-config` is found inside the system configuration file, the user configuration is not loaded.
 
@@ -1154,12 +1190,12 @@ ### Configuration file encoding
 
 ### Authentication with netrc
 
-You may also want to configure automatic credentials storage for extractors that support authentication (by providing login and password with `--username` and `--password`) in order not to pass credentials as command line arguments on every yt-dlp execution and prevent tracking plain text passwords in the shell command history. You can achieve this using a [`.netrc` file](https://stackoverflow.com/tags/.netrc/info) on a per-extractor basis. For that you will need to create a `.netrc` file in `--netrc-location` and restrict permissions to read/write by only you:
+You may also want to configure automatic credentials storage for extractors that support authentication (by providing login and password with `--username` and `--password`) in order not to pass credentials as command line arguments on every yt-dlp execution and prevent tracking plain text passwords in the shell command history. You can achieve this using a [`.netrc` file](https://stackoverflow.com/tags/.netrc/info) on a per-extractor basis. For that, you will need to create a `.netrc` file in `--netrc-location` and restrict permissions to read/write by only you:
 ```
 touch ${HOME}/.netrc
 chmod a-rwx,u+rw ${HOME}/.netrc
 ```
-After that you can add credentials for an extractor in the following format, where *extractor* is the name of the extractor in lowercase:
+After that, you can add credentials for an extractor in the following format, where *extractor* is the name of the extractor in lowercase:
 ```
 machine <extractor> login <username> password <password>
 ```
@@ -1176,13 +1212,13 @@ ### Authentication with netrc
 
 E.g. To use an encrypted `.netrc` file stored as `.authinfo.gpg`
 ```
-yt-dlp --netrc-cmd 'gpg --decrypt ~/.authinfo.gpg' https://www.youtube.com/watch?v=BaW_jenozKc
+yt-dlp --netrc-cmd 'gpg --decrypt ~/.authinfo.gpg' 'https://www.youtube.com/watch?v=BaW_jenozKc'
 ```
 
 
 ### Notes about environment variables
 * Environment variables are normally specified as `${VARIABLE}`/`$VARIABLE` on UNIX and `%VARIABLE%` on Windows; but is always shown as `${VARIABLE}` in this documentation
-* yt-dlp also allow using UNIX-style variables on Windows for path-like options; e.g. `--output`, `--config-location`
+* yt-dlp also allows using UNIX-style variables on Windows for path-like options; e.g. `--output`, `--config-location`
 * If unset, `${XDG_CONFIG_HOME}` defaults to `~/.config` and `${XDG_CACHE_HOME}` to `~/.cache`
 * On Windows, `~` points to `${HOME}` if present; or, `${USERPROFILE}` or `${HOMEDRIVE}${HOMEPATH}` otherwise
 * On Windows, `${USERPROFILE}` generally points to `C:\Users\<user name>` and `${APPDATA}` to `${USERPROFILE}\AppData\Roaming`
@@ -1201,7 +1237,7 @@ # OUTPUT TEMPLATE
 
 The field names themselves (the part inside the parenthesis) can also have some special formatting:
 
-1. **Object traversal**: The dictionaries and lists available in metadata can be traversed by using a dot `.` separator; e.g. `%(tags.0)s`, `%(subtitles.en.-1.ext)s`. You can do Python slicing with colon `:`; E.g. `%(id.3:7:-1)s`, `%(formats.:.format_id)s`. Curly braces `{}` can be used to build dictionaries with only specific keys; e.g. `%(formats.:.{format_id,height})#j`. An empty field name `%()s` refers to the entire infodict; e.g. `%(.{id,title})s`. Note that all the fields that become available using this method are not listed below. Use `-j` to see such fields
+1. **Object traversal**: The dictionaries and lists available in metadata can be traversed by using a dot `.` separator; e.g. `%(tags.0)s`, `%(subtitles.en.-1.ext)s`. You can do Python slicing with colon `:`; E.g. `%(id.3:7)s`, `%(id.6:2:-1)s`, `%(formats.:.format_id)s`. Curly braces `{}` can be used to build dictionaries with only specific keys; e.g. `%(formats.:.{format_id,height})#j`. An empty field name `%()s` refers to the entire infodict; e.g. `%(.{id,title})s`. Note that all the fields that become available using this method are not listed below. Use `-j` to see such fields
 
 1. **Arithmetic**: Simple arithmetic can be done on numeric fields using `+`, `-` and `*`. E.g. `%(playlist_index+10)03d`, `%(n_entries+1-playlist_index)d`
 
@@ -1222,7 +1258,7 @@ # OUTPUT TEMPLATE
 %(name[.keys][addition][>strf][,alternate][&replacement][|default])[flags][width][.precision][length]type
 ```
 
-Additionally, you can set different output templates for the various metadata files separately from the general output template by specifying the type of file followed by the template separated by a colon `:`. The different file types supported are `subtitle`, `thumbnail`, `description`, `annotation` (deprecated), `infojson`, `link`, `pl_thumbnail`, `pl_description`, `pl_infojson`, `chapter`, `pl_video`. E.g. `-o "%(title)s.%(ext)s" -o "thumbnail:%(title)s\%(title)s.%(ext)s"`  will put the thumbnails in a folder with the same name as the video. If any of the templates is empty, that type of file will not be written. E.g. `--write-thumbnail -o "thumbnail:"` will write thumbnails only for playlists and not for video.
+Additionally, you can set different output templates for the various metadata files separately from the general output template by specifying the type of file followed by the template separated by a colon `:`. The different file types supported are `subtitle`, `thumbnail`, `description`, `annotation` (deprecated), `infojson`, `link`, `pl_thumbnail`, `pl_description`, `pl_infojson`, `chapter`, `pl_video`. E.g. `-o "%(title)s.%(ext)s" -o "thumbnail:%(title)s\%(title)s.%(ext)s"` will put the thumbnails in a folder with the same name as the video. If any of the templates is empty, that type of file will not be written. E.g. `--write-thumbnail -o "thumbnail:"` will write thumbnails only for playlists and not for video.
 
 <a id="outtmpl-postprocess-note"></a>
 
@@ -1263,7 +1299,7 @@ # OUTPUT TEMPLATE
  - `like_count` (numeric): Number of positive ratings of the video
  - `dislike_count` (numeric): Number of negative ratings of the video
  - `repost_count` (numeric): Number of reposts of the video
- - `average_rating` (numeric): Average rating give by users, the scale used depends on the webpage
+ - `average_rating` (numeric): Average rating given by users, the scale used depends on the webpage
  - `comment_count` (numeric): Number of comments on the video (For some extractors, comments are only downloaded at the end, and so this field cannot be used)
  - `age_limit` (numeric): Age restriction for the video (years)
  - `live_status` (string): One of "not_live", "is_live", "is_upcoming", "was_live", "post_live" (was live, but VOD is not yet processed)
@@ -1282,16 +1318,19 @@ # OUTPUT TEMPLATE
  - `n_entries` (numeric): Total number of extracted items in the playlist
  - `playlist_id` (string): Identifier of the playlist that contains the video
  - `playlist_title` (string): Name of the playlist that contains the video
- - `playlist` (string): `playlist_id` or `playlist_title`
+ - `playlist` (string): `playlist_title` if available or else `playlist_id`
  - `playlist_count` (numeric): Total number of items in the playlist. May not be known if entire playlist is not extracted
  - `playlist_index` (numeric): Index of the video in the playlist padded with leading zeros according the final index
  - `playlist_autonumber` (numeric): Position of the video in the playlist download queue padded with leading zeros according to the total length of the playlist
  - `playlist_uploader` (string): Full name of the playlist uploader
  - `playlist_uploader_id` (string): Nickname or id of the playlist uploader
- - `webpage_url` (string): A URL to the video webpage which if given to yt-dlp should allow to get the same result again
+ - `playlist_channel` (string): Display name of the channel that uploaded the playlist
+ - `playlist_channel_id` (string): Identifier of the channel that uploaded the playlist
+ - `playlist_webpage_url` (string): URL of the playlist webpage
+ - `webpage_url` (string): A URL to the video webpage which, if given to yt-dlp, should yield the same result again
  - `webpage_url_basename` (string): The basename of the webpage URL
  - `webpage_url_domain` (string): The domain of the webpage URL
- - `original_url` (string): The URL given by the user (or same as `webpage_url` for playlist entries)
+ - `original_url` (string): The URL given by the user (or the same as `webpage_url` for playlist entries)
  - `categories` (list): List of categories the video belongs to
  - `tags` (list): List of tags assigned to the video
  - `cast` (list): List of cast members
@@ -1304,10 +1343,10 @@ # OUTPUT TEMPLATE
  - `chapter_number` (numeric): Number of the chapter the video belongs to
  - `chapter_id` (string): Id of the chapter the video belongs to
 
-Available for the video that is an episode of some series or programme:
+Available for the video that is an episode of some series or program:
 
- - `series` (string): Title of the series or programme the video episode belongs to
- - `series_id` (string): Id of the series or programme the video episode belongs to
+ - `series` (string): Title of the series or program the video episode belongs to
+ - `series_id` (string): Id of the series or program the video episode belongs to
  - `season` (string): Title of the season the video episode belongs to
  - `season_number` (numeric): Number of the season the video episode belongs to
  - `season_id` (string): Id of the season the video episode belongs to
@@ -1347,9 +1386,9 @@ # OUTPUT TEMPLATE
  - `thumbnails_table` (table): The thumbnail format table as printed by `--list-thumbnails`
  - `subtitles_table` (table): The subtitle format table as printed by `--list-subs`
  - `automatic_captions_table` (table): The automatic subtitle format table as printed by `--list-subs`
- 
+
  Available only after the video is downloaded (`post_process`/`after_move`):
- 
+
  - `filepath`: Actual path of downloaded video file
 
 Available only in `--sponsorblock-chapter-title`:
@@ -1364,11 +1403,11 @@ # OUTPUT TEMPLATE
 
 Each aforementioned sequence when referenced in an output template will be replaced by the actual value corresponding to the sequence name. E.g. for `-o %(title)s-%(id)s.%(ext)s` and an mp4 video with title `yt-dlp test video` and id `BaW_jenozKc`, this will result in a `yt-dlp test video-BaW_jenozKc.mp4` file created in the current directory.
 
-**Note**: Some of the sequences are not guaranteed to be present since they depend on the metadata obtained by a particular extractor. Such sequences will be replaced with placeholder value provided with `--output-na-placeholder` (`NA` by default).
+**Note**: Some of the sequences are not guaranteed to be present, since they depend on the metadata obtained by a particular extractor. Such sequences will be replaced with placeholder value provided with `--output-na-placeholder` (`NA` by default).
 
 **Tip**: Look at the `-j` output to identify which fields are available for the particular URL
 
-For numeric sequences you can use [numeric related formatting](https://docs.python.org/3/library/stdtypes.html#printf-style-string-formatting); e.g. `%(view_count)05d` will result in a string with view count padded with zeros up to 5 characters, like in `00042`.
+For numeric sequences, you can use [numeric related formatting](https://docs.python.org/3/library/stdtypes.html#printf-style-string-formatting); e.g. `%(view_count)05d` will result in a string with view count padded with zeros up to 5 characters, like in `00042`.
 
 Output templates can also contain arbitrary hierarchical path, e.g. `-o "%(playlist)s/%(playlist_index)s - %(title)s.%(ext)s"` which will result in downloading each video in a directory corresponding to this path template. Any missing directory will be automatically created for you.
 
@@ -1410,7 +1449,7 @@ # Download entire series season keeping each series and each season in separate
 
 # Download video as "C:\MyVideos\uploader\title.ext", subtitles as "C:\MyVideos\subs\uploader\title.ext"
 # and put all temporary files in "C:\MyVideos\tmp"
-$ yt-dlp -P "C:/MyVideos" -P "temp:tmp" -P "subtitle:subs" -o "%(uploader)s/%(title)s.%(ext)s" BaW_jenoz --write-subs
+$ yt-dlp -P "C:/MyVideos" -P "temp:tmp" -P "subtitle:subs" -o "%(uploader)s/%(title)s.%(ext)s" BaW_jenozKc --write-subs
 
 # Download video as "C:\MyVideos\uploader\title.ext" and subtitles as "C:\MyVideos\uploader\subs\title.ext"
 $ yt-dlp -P "C:/MyVideos" -o "%(uploader)s/%(title)s.%(ext)s" -o "subtitle:%(uploader)s/subs/%(title)s.%(ext)s" BaW_jenozKc --write-subs
@@ -1442,7 +1481,7 @@ # FORMAT SELECTION
 
  - `all`: Select **all formats** separately
  - `mergeall`: Select and **merge all formats** (Must be used with `--audio-multistreams`, `--video-multistreams` or both)
- - `b*`, `best*`: Select the best quality format that **contains either** a video or an audio or both (ie; `vcodec!=none or acodec!=none`)
+ - `b*`, `best*`: Select the best quality format that **contains either** a video or an audio or both (i.e.; `vcodec!=none or acodec!=none`)
  - `b`, `best`: Select the best quality format that **contains both** video and audio. Equivalent to `best*[vcodec!=none][acodec!=none]`
  - `bv`, `bestvideo`: Select the best quality **video-only** format. Equivalent to `best*[acodec=none]`
  - `bv*`, `bestvideo*`: Select the best quality format that **contains video**. It may also contain audio. Equivalent to `best*[vcodec!=none]`
@@ -1455,7 +1494,7 @@ # FORMAT SELECTION
  - `wa`, `worstaudio`: Select the worst quality audio-only format. Equivalent to `worst*[vcodec=none]`
  - `wa*`, `worstaudio*`: Select the worst quality format that contains audio. It may also contain video. Equivalent to `worst*[acodec!=none]`
 
-For example, to download the worst quality video-only format you can use `-f worstvideo`. It is however recommended not to use `worst` and related options. When your format selector is `worst`, the format which is worst in all respects is selected. Most of the time, what you actually want is the video with the smallest filesize instead. So it is generally better to use `-S +size` or more rigorously, `-S +size,+br,+res,+fps` instead of `-f worst`. See [Sorting Formats](#sorting-formats) for more details.
+For example, to download the worst quality video-only format you can use `-f worstvideo`. It is, however, recommended not to use `worst` and related options. When your format selector is `worst`, the format which is worst in all respects is selected. Most of the time, what you actually want is the video with the smallest filesize instead. So it is generally better to use `-S +size` or more rigorously, `-S +size,+br,+res,+fps` instead of `-f worst`. See [Sorting Formats](#sorting-formats) for more details.
 
 You can select the n'th best format of a type by using `best<type>.<n>`. For example, `best.2` will select the 2nd best combined format. Similarly, `bv*.3` will select the 3rd best format that contains a video stream.
 
@@ -1505,7 +1544,7 @@ ## Filtering Formats
 
 Any string comparison may be prefixed with negation `!` in order to produce an opposite comparison, e.g. `!*=` (does not contain). The comparand of a string comparison needs to be quoted with either double or single quotes if it contains spaces or special characters other than `._-`.
 
-**Note**: None of the aforementioned meta fields are guaranteed to be present since this solely depends on the metadata obtained by particular extractor, i.e. the metadata offered by the website. Any other field made available by the extractor can also be used for filtering.
+**Note**: None of the aforementioned meta fields are guaranteed to be present since this solely depends on the metadata obtained by the particular extractor, i.e. the metadata offered by the website. Any other field made available by the extractor can also be used for filtering.
 
 Formats for which the value is not known are excluded unless you put a question mark (`?`) after the operator. You can combine format filters, so `-f "bv[height<=?720][tbr>500]"` selects up to 720p videos (or videos where the height is not known) with a bitrate of at least 500 kbps. You can also use the filters with `all` to download all formats that satisfy the filter, e.g. `-f "all[vcodec=none]"` selects all audio-only formats.
 
@@ -1520,7 +1559,7 @@ ## Sorting Formats
  - `hasvid`: Gives priority to formats that have a video stream
  - `hasaud`: Gives priority to formats that have an audio stream
  - `ie_pref`: The format preference
- - `lang`: The language preference
+ - `lang`: The language preference as determined by the extractor (e.g. original language preferred over audio description)
  - `quality`: The quality of the format
  - `source`: The preference of the source
  - `proto`: Protocol used for download (`https`/`ftps` > `http`/`ftp` > `m3u8_native`/`m3u8` > `http_dash_segments`> `websocket_frag` > `mms`/`rtsp` > `f4f`/`f4m`)
@@ -1544,14 +1583,14 @@ ## Sorting Formats
  - `abr`: Average audio bitrate in [kbps](## "1000 bits/sec")
  - `br`: Average bitrate in [kbps](## "1000 bits/sec"), `tbr`/`vbr`/`abr`
  - `asr`: Audio sample rate in Hz
- 
+
 **Deprecation warning**: Many of these fields have (currently undocumented) aliases, that may be removed in a future version. It is recommended to use only the documented field names.
 
 All fields, unless specified otherwise, are sorted in descending order. To reverse this, prefix the field with a `+`. E.g. `+res` prefers format with the smallest resolution. Additionally, you can suffix a preferred value for the fields, separated by a `:`. E.g. `res:720` prefers larger videos, but no larger than 720p and the smallest video if there are no videos less than 720p. For `codec` and `ext`, you can provide two preferred values, the first for video and the second for audio. E.g. `+codec:avc:m4a` (equivalent to `+vcodec:avc,+acodec:m4a`) sets the video codec preference to `h264` > `h265` > `vp9` > `vp9.2` > `av01` > `vp8` > `h263` > `theora` and audio codec preference to `mp4a` > `aac` > `vorbis` > `opus` > `mp3` > `ac3` > `dts`. You can also make the sorting prefer the nearest values to the provided by using `~` as the delimiter. E.g. `filesize~1G` prefers the format with filesize closest to 1 GiB.
 
-The fields `hasvid` and `ie_pref` are always given highest priority in sorting, irrespective of the user-defined order. This behaviour can be changed by using `--format-sort-force`. Apart from these, the default order used is: `lang,quality,res,fps,hdr:12,vcodec:vp9.2,channels,acodec,size,br,asr,proto,ext,hasaud,source,id`. The extractors may override this default order, but they cannot override the user-provided order.
+The fields `hasvid` and `ie_pref` are always given highest priority in sorting, irrespective of the user-defined order. This behavior can be changed by using `--format-sort-force`. Apart from these, the default order used is: `lang,quality,res,fps,hdr:12,vcodec,channels,acodec,size,br,asr,proto,ext,hasaud,source,id`. The extractors may override this default order, but they cannot override the user-provided order.
 
-Note that the default has `vcodec:vp9.2`; i.e. `av1` is not preferred. Similarly, the default for hdr is `hdr:12`; i.e. dolby vision is not preferred. These choices are made since DV and AV1 formats are not yet fully compatible with most devices. This may be changed in the future as more devices become capable of smoothly playing back these formats.
+Note that the default for hdr is `hdr:12`; i.e. Dolby Vision is not preferred. This choice was made since DV formats are not yet fully compatible with most devices. This may be changed in the future.
 
 If your format selector is `worst`, the last item is selected after sorting. This means it will select the format that is worst in all respects. Most of the time, what you actually want is the video with the smallest filesize instead. So it is generally better to use `-f best -S +size,+br,+res,+fps`.
 
@@ -1628,11 +1667,11 @@ # Download the best video (that also has audio) but no bigger than 50 MB,
 # or the worst video (that also has audio) if there is no video under 50 MB
 $ yt-dlp -f "b[filesize<50M] / w"
 
-# Download largest video (that also has audio) but no bigger than 50 MB,
+# Download the largest video (that also has audio) but no bigger than 50 MB,
 # or the smallest video (that also has audio) if there is no video under 50 MB
 $ yt-dlp -f "b" -S "filesize:50M"
 
-# Download best video (that also has audio) that is closest in size to 50 MB
+# Download the best video (that also has audio) that is closest in size to 50 MB
 $ yt-dlp -f "b" -S "filesize~50M"
 
 
@@ -1688,7 +1727,7 @@ # MODIFYING METADATA
 
 The general syntax of `--parse-metadata FROM:TO` is to give the name of a field or an [output template](#output-template) to extract data from, and the format to interpret it as, separated by a colon `:`. Either a [Python regular expression](https://docs.python.org/3/library/re.html#regular-expression-syntax) with named capture groups, a single field name, or a similar syntax to the [output template](#output-template) (only `%(field)s` formatting is supported) can be used for `TO`. The option can be used multiple times to parse and modify various fields.
 
-Note that these options preserve their relative order, allowing replacements to be made in parsed fields and viceversa. Also, any field thus created can be used in the [output template](#output-template) and will also affect the media file's metadata added when using `--embed-metadata`.
+Note that these options preserve their relative order, allowing replacements to be made in parsed fields and vice versa. Also, any field thus created can be used in the [output template](#output-template) and will also affect the media file's metadata added when using `--embed-metadata`.
 
 This option also has a few special uses:
 
@@ -1754,49 +1793,52 @@ # Replace all spaces and "_" in title and uploader with a `-`
 
 # EXTRACTOR ARGUMENTS
 
-Some extractors accept additional arguments which can be passed using `--extractor-args KEY:ARGS`. `ARGS` is a `;` (semicolon) separated string of `ARG=VAL1,VAL2`. E.g. `--extractor-args "youtube:player-client=android_embedded,web;formats=incomplete" --extractor-args "funimation:version=uncut"`
+Some extractors accept additional arguments which can be passed using `--extractor-args KEY:ARGS`. `ARGS` is a `;` (semicolon) separated string of `ARG=VAL1,VAL2`. E.g. `--extractor-args "youtube:player-client=tv,mweb;formats=incomplete" --extractor-args "twitter:api=syndication"`
 
 Note: In CLI, `ARG` can use `-` instead of `_`; e.g. `youtube:player-client"` becomes `youtube:player_client"`
 
 The following extractors use this feature:
 
 #### youtube
-* `lang`: Prefer translated metadata (`title`, `description` etc) of this language code (case-sensitive). By default, the video primary language metadata is preferred, with a fallback to `en` translated. See [youtube.py](https://github.com/yt-dlp/yt-dlp/blob/c26f9b991a0681fd3ea548d535919cec1fbbd430/yt_dlp/extractor/youtube.py#L381-L390) for list of supported content language codes
+* `lang`: Prefer translated metadata (`title`, `description` etc) of this language code (case-sensitive). By default, the video primary language metadata is preferred, with a fallback to `en` translated. See [youtube/_base.py](https://github.com/yt-dlp/yt-dlp/blob/415b4c9f955b1a0391204bd24a7132590e7b3bdb/yt_dlp/extractor/youtube/_base.py#L402-L409) for the list of supported content language codes
 * `skip`: One or more of `hls`, `dash` or `translated_subs` to skip extraction of the m3u8 manifests, dash manifests and [auto-translated subtitles](https://github.com/yt-dlp/yt-dlp/issues/4090#issuecomment-1158102032) respectively
-* `player_client`: Clients to extract video data from. The main clients are `web`, `ios` and `android`, with variants `_music`, `_embedded`, `_embedscreen`, `_creator` (e.g. `web_embedded`); and `mweb`, `mweb_embedscreen` and `tv_embedded` (agegate bypass) with no variants. By default, `ios,web` is used, but `tv_embedded` and `creator` variants are added as required for age-gated videos. Similarly, the music variants are added for `music.youtube.com` urls. The `android` clients will always be given lowest priority since their formats are broken. You can use `all` to use all the clients, and `default` for the default clients.
-* `player_skip`: Skip some network requests that are generally needed for robust extraction. One or more of `configs` (skip client configs), `webpage` (skip initial webpage), `js` (skip js player). While these options can help reduce the number of requests needed or avoid some rate-limiting, they could cause some issues. See [#860](https://github.com/yt-dlp/yt-dlp/pull/860) for more details
+* `player_client`: Clients to extract video data from. The currently available clients are `web`, `web_safari`, `web_embedded`, `web_music`, `web_creator`, `mweb`, `ios`, `android`, `android_vr`, `tv`, `tv_simply` and `tv_embedded`. By default, `tv,ios,web` is used, or `tv,web` is used when authenticating with cookies. The `web_music` client is added for `music.youtube.com` URLs when logged-in cookies are used. The `web_embedded` client is added for age-restricted videos but only works if the video is embeddable. The `tv_embedded` and `web_creator` clients are added for age-restricted videos if account age-verification is required. Some clients, such as `web` and `web_music`, require a `po_token` for their formats to be downloadable. Some clients, such as `web_creator`, will only work with authentication. Not all clients support authentication via cookies. You can use `default` for the default clients, or you can use `all` for all clients (not recommended). You can prefix a client with `-` to exclude it, e.g. `youtube:player_client=default,-ios`
+* `player_skip`: Skip some network requests that are generally needed for robust extraction. One or more of `configs` (skip client configs), `webpage` (skip initial webpage), `js` (skip js player), `initial_data` (skip initial data/next ep request). While these options can help reduce the number of requests needed or avoid some rate-limiting, they could cause issues such as missing formats or metadata.  See [#860](https://github.com/yt-dlp/yt-dlp/pull/860) and [#12826](https://github.com/yt-dlp/yt-dlp/issues/12826) for more details
+* `webpage_skip`: Skip extraction of embedded webpage data. One or both of `player_response`, `initial_data`. These options are for testing purposes and don't skip any network requests
 * `player_params`: YouTube player parameters to use for player requests. Will overwrite any default ones set by yt-dlp.
+* `player_js_variant`: The player javascript variant to use for signature and nsig deciphering. The known variants are: `main`, `tce`, `tv`, `tv_es6`, `phone`, `tablet`. The default is `main`, and the others are for debugging purposes. You can use `actual` to go with what is prescribed by the site
 * `comment_sort`: `top` or `new` (default) - choose comment sorting mode (on YouTube's side)
 * `max_comments`: Limit the amount of comments to gather. Comma-separated list of integers representing `max-comments,max-parents,max-replies,max-replies-per-thread`. Default is `all,all,all,all`
     * E.g. `all,all,1000,10` will get a maximum of 1000 replies total, with up to 10 replies per thread. `1000,all,100` will get a maximum of 1000 comments, with a maximum of 100 replies total
-* `formats`: Change the types of formats to return. `dashy` (convert HTTP to DASH), `duplicate` (identical content but different URLs or protocol; includes `dashy`), `incomplete` (cannot be downloaded completely - live dash and post-live m3u8)
+* `formats`: Change the types of formats to return. `dashy` (convert HTTP to DASH), `duplicate` (identical content but different URLs or protocol; includes `dashy`), `incomplete` (cannot be downloaded completely - live dash and post-live m3u8), `missing_pot` (include formats that require a PO Token but are missing one)
 * `innertube_host`: Innertube API host to use for all API requests; e.g. `studio.youtube.com`, `youtubei.googleapis.com`. Note that cookies exported from one subdomain will not work on others
-* `innertube_key`: Innertube API key to use for all API requests
+* `innertube_key`: Innertube API key to use for all API requests. By default, no API key is used
 * `raise_incomplete_data`: `Incomplete Data Received` raises an error instead of reporting a warning
+* `data_sync_id`: Overrides the account Data Sync ID used in Innertube API requests. This may be needed if you are using an account with `youtube:player_skip=webpage,configs` or `youtubetab:skip=webpage`
+* `visitor_data`: Overrides the Visitor Data used in Innertube API requests. This should be used with `player_skip=webpage,configs` and without cookies. Note: this may have adverse effects if used improperly. If a session from a browser is wanted, you should pass cookies instead (which contain the Visitor ID)
+* `po_token`:  Proof of Origin (PO) Token(s) to use. Comma seperated list of PO Tokens in the format `CLIENT.CONTEXT+PO_TOKEN`, e.g. `youtube:po_token=web.gvs+XXX,web.player=XXX,web_safari.gvs+YYY`. Context can be any of `gvs` (Google Video Server URLs), `player` (Innertube player request) or `subs` (Subtitles)
+* `pot_trace`: Enable debug logging for PO Token fetching. Either `true` or `false` (default)
+* `fetch_pot`: Policy to use for fetching a PO Token from providers. One of `always` (always try fetch a PO Token regardless if the client requires one for the given context), `never` (never fetch a PO Token), or `auto` (default; only fetch a PO Token if the client requires one for the given context)
+* `playback_wait`: Duration (in seconds) to wait inbetween the extraction and download stages in order to ensure the formats are available. The default is `6` seconds
+
+#### youtubepot-webpo
+* `bind_to_visitor_id`: Whether to use the Visitor ID instead of Visitor Data for caching WebPO tokens. Either `true` (default) or `false`
 
 #### youtubetab (YouTube playlists, channels, feeds, etc.)
 * `skip`: One or more of `webpage` (skip initial webpage download), `authcheck` (allow the download of playlists requiring authentication when no initial webpage is downloaded. This may cause unwanted behavior, see [#1122](https://github.com/yt-dlp/yt-dlp/pull/1122) for more details)
 * `approximate_date`: Extract approximate `upload_date` and `timestamp` in flat-playlist. This may cause date-based filters to be slightly off
 
 #### generic
-* `fragment_query`: Passthrough any query in mpd/m3u8 manifest URLs to their fragments if no value is provided, or else apply the query string given as `fragment_query=VALUE`. Does not apply to ffmpeg
+* `fragment_query`: Passthrough any query in mpd/m3u8 manifest URLs to their fragments if no value is provided, or else apply the query string given as `fragment_query=VALUE`. Note that if the stream has an HLS AES-128 key, then the query parameters will be passed to the key URI as well, unless the `key_query` extractor-arg is passed, or unless an external key URI is provided via the `hls_key` extractor-arg. Does not apply to ffmpeg
 * `variant_query`: Passthrough the master m3u8 URL query to its variant playlist URLs if no value is provided, or else apply the query string given as `variant_query=VALUE`
+* `key_query`: Passthrough the master m3u8 URL query to its HLS AES-128 decryption key URI if no value is provided, or else apply the query string given as `key_query=VALUE`. Note that this will have no effect if the key URI is provided via the `hls_key` extractor-arg. Does not apply to ffmpeg
 * `hls_key`: An HLS AES-128 key URI *or* key (as hex), and optionally the IV (as hex), in the form of `(URI|KEY)[,IV]`; e.g. `generic:hls_key=ABCDEF1234567980,0xFEDCBA0987654321`. Passing any of these values will force usage of the native HLS downloader and override the corresponding values found in the m3u8 playlist
 * `is_live`: Bypass live HLS detection and manually set `live_status` - a value of `false` will set `not_live`, any other value (or no value) will set `is_live`
-
-#### funimation
-* `language`: Audio languages to extract, e.g. `funimation:language=english,japanese`
-* `version`: The video version to extract - `uncut` or `simulcast`
-
-#### crunchyrollbeta (Crunchyroll)
-* `hardsub`: One or more hardsub versions to extract (in order of preference), or `all` (default: `None` = no hardsubs will be extracted), e.g. `crunchyrollbeta:hardsub=en-US,de-DE`
+* `impersonate`: Target(s) to try and impersonate with the initial webpage request; e.g. `generic:impersonate=safari,chrome-110`. Use `generic:impersonate` to impersonate any available target, and use `generic:impersonate=false` to disable impersonation (default)
 
 #### vikichannel
 * `video_types`: Types of videos to download - one or more of `episodes`, `movies`, `clips`, `trailers`
 
-#### niconico
-* `segment_duration`: Segment duration in milliseconds for HLS-DMC formats. Use it at your own risk since this feature **may result in your account termination.**
-
 #### youtubewebarchive
 * `check_all`: Try to check more at the cost of more requests. One or more of `thumbnails`, `captures`
 
@@ -1808,6 +1850,9 @@ #### hotstar
 * `vcodec`: vcodec to ignore - one or more of `h264`, `h265`, `dvh265`
 * `dr`: dynamic range to ignore - one or more of `sdr`, `hdr10`, `dv`
 
+#### instagram
+* `app_id`: The value of the `X-IG-App-ID` header used for API requests. Default is the web app ID, `936619743392459`
+
 #### niconicochannelplus
 * `max_comments`: Maximum number of comments to extract - default is `120`
 
@@ -1848,7 +1893,23 @@ #### afreecatvlive
 * `cdn`: One or more CDN IDs to use with the API call for stream URLs, e.g. `gcp_cdn`, `gs_cdn_pc_app`, `gs_cdn_mobile_web`, `gs_cdn_pc_web`
 
 #### soundcloud
-* `formats`: Formats to request from the API. Requested values should be in the format of `{protocol}_{extension}` (omitting the bitrate), e.g. `hls_opus,http_aac`. The `*` character functions as a wildcard, e.g. `*_mp3`, and can passed by itself to request all formats. Known protocols include `http`, `hls` and `hls-aes`; known extensions include `aac`, `opus` and `mp3`. Original `download` formats are always extracted. Default is `http_aac,hls_aac,http_opus,hls_opus,http_mp3,hls_mp3`
+* `formats`: Formats to request from the API. Requested values should be in the format of `{protocol}_{codec}`, e.g. `hls_opus,http_aac`. The `*` character functions as a wildcard, e.g. `*_mp3`, and can be passed by itself to request all formats. Known protocols include `http`, `hls` and `hls-aes`; known codecs include `aac`, `opus` and `mp3`. Original `download` formats are always extracted. Default is `http_aac,hls_aac,http_opus,hls_opus,http_mp3,hls_mp3`
+
+#### orfon (orf:on)
+* `prefer_segments_playlist`: Prefer a playlist of program segments instead of a single complete video when available. If individual segments are desired, use `--concat-playlist never --extractor-args "orfon:prefer_segments_playlist"`
+
+#### bilibili
+* `prefer_multi_flv`: Prefer extracting flv formats over mp4 for older videos that still provide legacy formats
+
+#### sonylivseries
+* `sort_order`: Episode sort order for series extraction - one of `asc` (ascending, oldest first) or `desc` (descending, newest first). Default is `asc`
+
+#### tver
+* `backend`: Backend API to use for extraction - one of `streaks` (default) or `brightcove` (deprecated)
+
+#### vimeo
+* `client`: Client to extract video data from. The currently available clients are `android`, `ios`, and `web`. Only one client can be used. The `web` client is used by default. The `web` client only works with account cookies or login credentials. The `android` and `ios` clients only work with previously cached OAuth tokens
+* `original_format_policy`: Policy for when to try extracting original formats. One of `always`, `never`, or `auto`. The default `auto` policy tries to avoid exceeding the web client's API rate-limit by only making an extra request when Vimeo publicizes the video's downloadability
 
 **Note**: These options may be changed/removed in the future without concern for backward compatibility
 
@@ -1859,16 +1920,16 @@ # PLUGINS
 
 Note that **all** plugins are imported even if not invoked, and that **there are no checks** performed on plugin code. **Use plugins at your own risk and only if you trust the code!**
 
-Plugins can be of `<type>`s `extractor` or `postprocessor`. 
-- Extractor plugins do not need to be enabled from the CLI and are automatically invoked when the input URL is suitable for it. 
-- Extractor plugins take priority over builtin extractors.
+Plugins can be of `<type>`s `extractor` or `postprocessor`.
+- Extractor plugins do not need to be enabled from the CLI and are automatically invoked when the input URL is suitable for it.
+- Extractor plugins take priority over built-in extractors.
 - Postprocessor plugins can be invoked using `--use-postprocessor NAME`.
 
 
 Plugins are loaded from the namespace packages `yt_dlp_plugins.extractor` and `yt_dlp_plugins.postprocessor`.
 
 In other words, the file structure on the disk looks something like:
-    
+
         yt_dlp_plugins/
             extractor/
                 myplugin.py
@@ -1876,6 +1937,7 @@ # PLUGINS
                 myplugin.py
 
 yt-dlp looks for these `yt_dlp_plugins` namespace folders in many locations (see below) and loads in plugins from **all** of them.
+Set the environment variable `YTDLP_NO_PLUGINS` to something nonempty to disable loading plugins entirely.
 
 See the [wiki for some known plugins](https://github.com/yt-dlp/yt-dlp/wiki/Plugins)
 
@@ -1903,7 +1965,7 @@ ## Installing Plugins
     * Plugin packages can be installed and managed using `pip`. See [yt-dlp-sample-plugins](https://github.com/yt-dlp/yt-dlp-sample-plugins) for an example.
       * Note: plugin files between plugin packages installed with pip must have unique filenames.
     * Any path in `PYTHONPATH` is searched in for the `yt_dlp_plugins` namespace folder.
-      * Note: This does not apply for Pyinstaller/py2exe builds.
+      * Note: This does not apply for Pyinstaller builds.
 
 
 `.zip`, `.egg` and `.whl` archives containing a `yt_dlp_plugins` namespace folder in their root are also supported as plugin packages.
@@ -1916,7 +1978,7 @@ ## Developing Plugins
 
 See the [yt-dlp-sample-plugins](https://github.com/yt-dlp/yt-dlp-sample-plugins) repo for a template plugin package and the [Plugin Development](https://github.com/yt-dlp/yt-dlp/wiki/Plugin-Development) section of the wiki for a plugin development guide.
 
-All public classes with a name ending in `IE`/`PP` are imported from each file for extractors and postprocessors repectively. This respects underscore prefix (e.g. `_MyBasePluginIE` is private) and `__all__`. Modules can similarly be excluded by prefixing the module name with an underscore (e.g. `_myplugin.py`).
+All public classes with a name ending in `IE`/`PP` are imported from each file for extractors and postprocessors respectively. This respects underscore prefix (e.g. `_MyBasePluginIE` is private) and `__all__`. Modules can similarly be excluded by prefixing the module name with an underscore (e.g. `_myplugin.py`).
 
 To replace an existing extractor with a subclass of one, set the `plugin_name` class keyword argument (e.g. `class MyPluginIE(ABuiltInIE, plugin_name='myplugin')` will replace `ABuiltInIE` with `MyPluginIE`). Since the extractor replaces the parent, you should exclude the subclass extractor from being imported separately by making it private using one of the methods described above.
 
@@ -1928,7 +1990,7 @@ # EMBEDDING YT-DLP
 
 yt-dlp makes the best effort to be a good command-line program, and thus should be callable from any programming language.
 
-Your program should avoid parsing the normal stdout since they may change in future versions. Instead they should use options such as `-J`, `--print`, `--progress-template`, `--exec` etc to create console output that you can reliably reproduce and parse.
+Your program should avoid parsing the normal stdout since they may change in future versions. Instead, they should use options such as `-J`, `--print`, `--progress-template`, `--exec` etc to create console output that you can reliably reproduce and parse.
 
 From a Python program, you can embed yt-dlp in a more powerful fashion, like this:
 
@@ -2132,14 +2194,14 @@ ### New features
 
 * **[Format Sorting](#sorting-formats)**: The default format sorting options have been changed so that higher resolution and better codecs will be now preferred instead of simply using larger bitrate. Furthermore, you can now specify the sort order using `-S`. This allows for much easier format selection than what is possible by simply using `--format` ([examples](#format-selection-examples))
 
-* **Merged with animelover1984/youtube-dl**: You get most of the features and improvements from [animelover1984/youtube-dl](https://github.com/animelover1984/youtube-dl) including `--write-comments`, `BiliBiliSearch`, `BilibiliChannel`, Embedding thumbnail in mp4/ogg/opus, playlist infojson etc. Note that NicoNico livestreams are not available. See [#31](https://github.com/yt-dlp/yt-dlp/pull/31) for details.
+* **Merged with animelover1984/youtube-dl**: You get most of the features and improvements from [animelover1984/youtube-dl](https://github.com/animelover1984/youtube-dl) including `--write-comments`, `BiliBiliSearch`, `BilibiliChannel`, Embedding thumbnail in mp4/ogg/opus, playlist infojson etc. See [#31](https://github.com/yt-dlp/yt-dlp/pull/31) for details.
 
 * **YouTube improvements**:
     * Supports Clips, Stories (`ytstories:<channel UCID>`), Search (including filters)**\***, YouTube Music Search, Channel-specific search, Search prefixes (`ytsearch:`, `ytsearchdate:`)**\***, Mixes, and Feeds (`:ytfav`, `:ytwatchlater`, `:ytsubs`, `:ythistory`, `:ytrec`, `:ytnotif`)
     * Fix for [n-sig based throttling](https://github.com/ytdl-org/youtube-dl/issues/29326) **\***
-    * Supports some (but not all) age-gated content without cookies
     * Download livestreams from the start using `--live-from-start` (*experimental*)
     * Channel URLs download all uploads of the channel, including shorts and live
+    * Support for [logging in with OAuth](https://github.com/yt-dlp/yt-dlp/wiki/Extractors#logging-in-with-oauth)
 
 * **Cookies from browser**: Cookies can be automatically extracted from all major web browsers using `--cookies-from-browser BROWSER[+KEYRING][:PROFILE][::CONTAINER]`
 
@@ -2163,9 +2225,9 @@ ### New features
 
 * **Output template improvements**: Output templates can now have date-time formatting, numeric offsets, object traversal etc. See [output template](#output-template) for details. Even more advanced operations can also be done with the help of `--parse-metadata` and `--replace-in-metadata`
 
-* **Other new options**: Many new options have been added such as `--alias`, `--print`, `--concat-playlist`, `--wait-for-video`, `--retry-sleep`, `--sleep-requests`, `--convert-thumbnails`, `--force-download-archive`, `--force-overwrites`, `--break-match-filter` etc
+* **Other new options**: Many new options have been added such as `--alias`, `--print`, `--concat-playlist`, `--wait-for-video`, `--retry-sleep`, `--sleep-requests`, `--convert-thumbnails`, `--force-download-archive`, `--force-overwrites`, `--break-match-filters` etc
 
-* **Improvements**: Regex and other operators in `--format`/`--match-filter`, multiple `--postprocessor-args` and `--downloader-args`, faster archive checking, more [format selection options](#format-selection), merge multi-video/audio, multiple `--config-locations`, `--exec` at different stages, etc
+* **Improvements**: Regex and other operators in `--format`/`--match-filters`, multiple `--postprocessor-args` and `--downloader-args`, faster archive checking, more [format selection options](#format-selection), merge multi-video/audio, multiple `--config-locations`, `--exec` at different stages, etc
 
 * **Plugins**: Extractors and PostProcessors can be loaded from an external file. See [plugins](#plugins) for details
 
@@ -2181,12 +2243,12 @@ ### Differences in default behavior
 
 Some of yt-dlp's default options are different from that of youtube-dl and youtube-dlc:
 
-* yt-dlp supports only [Python 3.8+](## "Windows 7"), and *may* remove support for more versions as they [become EOL](https://devguide.python.org/versions/#python-release-cycle); while [youtube-dl still supports Python 2.6+ and 3.2+](https://github.com/ytdl-org/youtube-dl/issues/30568#issue-1118238743)
+* yt-dlp supports only [Python 3.9+](## "Windows 8"), and will remove support for more versions as they [become EOL](https://devguide.python.org/versions/#python-release-cycle); while [youtube-dl still supports Python 2.6+ and 3.2+](https://github.com/ytdl-org/youtube-dl/issues/30568#issue-1118238743)
 * The options `--auto-number` (`-A`), `--title` (`-t`) and `--literal` (`-l`), no longer work. See [removed options](#Removed) for details
 * `avconv` is not supported as an alternative to `ffmpeg`
 * yt-dlp stores config files in slightly different locations to youtube-dl. See [CONFIGURATION](#configuration) for a list of correct locations
 * The default [output template](#output-template) is `%(title)s [%(id)s].%(ext)s`. There is no real reason for this change. This was changed before yt-dlp was ever made public and now there are no plans to change it back to `%(title)s-%(id)s.%(ext)s`. Instead, you may use `--compat-options filename`
-* The default [format sorting](#sorting-formats) is different from youtube-dl and prefers higher resolution and better codecs rather than higher bitrates. You can use the `--format-sort` option to change this to any order you prefer, or use `--compat-options format-sort` to use youtube-dl's sorting order
+* The default [format sorting](#sorting-formats) is different from youtube-dl and prefers higher resolution and better codecs rather than higher bitrates. You can use the `--format-sort` option to change this to any order you prefer, or use `--compat-options format-sort` to use youtube-dl's sorting order. Older versions of yt-dlp preferred VP9 due to its broader compatibility; you can use `--compat-options prefer-vp9-sort` to revert to that format sorting preference. These two compat options cannot be used together
 * The default format selector is `bv*+ba/b`. This means that if a combined video + audio format that is better than the best video-only format is found, the former will be preferred. Use `-f bv+ba/b` or `--compat-options format-spec` to revert this
 * Unlike youtube-dlc, yt-dlp does not allow merging multiple audio/video streams into one file by default (since this conflicts with the use of `-f bv*+ba`). If needed, this feature must be enabled using `--audio-multistreams` and `--video-multistreams`. You can also use `--compat-options multistreams` to enable both
 * `--no-abort-on-error` is enabled by default. Use `--abort-on-error` or `--compat-options abort-on-error` to abort on errors instead
@@ -2198,7 +2260,7 @@ ### Differences in default behavior
 * Live chats (if available) are considered as subtitles. Use `--sub-langs all,-live_chat` to download all subtitles except live chat. You can also use `--compat-options no-live-chat` to prevent any live chat/danmaku from downloading
 * YouTube channel URLs download all uploads of the channel. To download only the videos in a specific tab, pass the tab's URL. If the channel does not show the requested tab, an error will be raised. Also, `/live` URLs raise an error if there are no live videos instead of silently downloading the entire channel. You may use `--compat-options no-youtube-channel-redirect` to revert all these redirections
 * Unavailable videos are also listed for YouTube playlists. Use `--compat-options no-youtube-unavailable-videos` to remove this
-* The upload dates extracted from YouTube are in UTC [when available](https://github.com/yt-dlp/yt-dlp/blob/89e4d86171c7b7c997c77d4714542e0383bf0db0/yt_dlp/extractor/youtube.py#L3898-L3900). Use `--compat-options no-youtube-prefer-utc-upload-date` to prefer the non-UTC upload date.
+* The upload dates extracted from YouTube are in UTC.
 * If `ffmpeg` is used as the downloader, the downloading and merging of formats happen in a single step when possible. Use `--compat-options no-direct-merge` to revert this
 * Thumbnail embedding in `mp4` is done with mutagen if possible. Use `--compat-options embed-thumbnail-atomicparsley` to force the use of AtomicParsley instead
 * Some internal metadata such as filenames are removed by default from the infojson. Use `--no-clean-infojson` or `--compat-options no-clean-infojson` to revert this
@@ -2206,19 +2268,30 @@ ### Differences in default behavior
 * `certifi` will be used for SSL root certificates, if installed. If you want to use system certificates (e.g. self-signed), use `--compat-options no-certifi`
 * yt-dlp's sanitization of invalid characters in filenames is different/smarter than in youtube-dl. You can use `--compat-options filename-sanitization` to revert to youtube-dl's behavior
 * ~~yt-dlp tries to parse the external downloader outputs into the standard progress output if possible (Currently implemented: [aria2c](https://github.com/yt-dlp/yt-dlp/issues/5931)). You can use `--compat-options no-external-downloader-progress` to get the downloader output as-is~~
-* yt-dlp versions between 2021.09.01 and 2023.01.02 applies `--match-filter` to nested playlists. This was an unintentional side-effect of [8f18ac](https://github.com/yt-dlp/yt-dlp/commit/8f18aca8717bb0dd49054555af8d386e5eda3a88) and is fixed in [d7b460](https://github.com/yt-dlp/yt-dlp/commit/d7b460d0e5fc710950582baed2e3fc616ed98a80). Use `--compat-options playlist-match-filter` to revert this
+* yt-dlp versions between 2021.09.01 and 2023.01.02 applies `--match-filters` to nested playlists. This was an unintentional side-effect of [8f18ac](https://github.com/yt-dlp/yt-dlp/commit/8f18aca8717bb0dd49054555af8d386e5eda3a88) and is fixed in [d7b460](https://github.com/yt-dlp/yt-dlp/commit/d7b460d0e5fc710950582baed2e3fc616ed98a80). Use `--compat-options playlist-match-filter` to revert this
 * yt-dlp versions between 2021.11.10 and 2023.06.21 estimated `filesize_approx` values for fragmented/manifest formats. This was added for convenience in [f2fe69](https://github.com/yt-dlp/yt-dlp/commit/f2fe69c7b0d208bdb1f6292b4ae92bc1e1a7444a), but was reverted in [0dff8e](https://github.com/yt-dlp/yt-dlp/commit/0dff8e4d1e6e9fb938f4256ea9af7d81f42fd54f) due to the potentially extreme inaccuracy of the estimated values. Use `--compat-options manifest-filesize-approx` to keep extracting the estimated values
 * yt-dlp uses modern http client backends such as `requests`. Use `--compat-options prefer-legacy-http-handler` to prefer the legacy http handler (`urllib`) to be used for standard http requests.
 * The sub-modules `swfinterp`, `casefold` are removed.
+* Passing `--simulate` (or calling `extract_info` with `download=False`) no longer alters the default format selection. See [#9843](https://github.com/yt-dlp/yt-dlp/issues/9843) for details.
+* yt-dlp no longer applies the server modified time to downloaded files by default. Use `--mtime` or `--compat-options mtime-by-default` to revert this.
 
 For ease of use, a few more compat options are available:
 
-* `--compat-options all`: Use all compat options (Do NOT use)
-* `--compat-options youtube-dl`: Same as `--compat-options all,-multistreams,-playlist-match-filter,-manifest-filesize-approx`
-* `--compat-options youtube-dlc`: Same as `--compat-options all,-no-live-chat,-no-youtube-channel-redirect,-playlist-match-filter,-manifest-filesize-approx`
-* `--compat-options 2021`: Same as `--compat-options 2022,no-certifi,filename-sanitization,no-youtube-prefer-utc-upload-date`
+* `--compat-options all`: Use all compat options (**Do NOT use this!**)
+* `--compat-options youtube-dl`: Same as `--compat-options all,-multistreams,-playlist-match-filter,-manifest-filesize-approx,-allow-unsafe-ext,-prefer-vp9-sort`
+* `--compat-options youtube-dlc`: Same as `--compat-options all,-no-live-chat,-no-youtube-channel-redirect,-playlist-match-filter,-manifest-filesize-approx,-allow-unsafe-ext,-prefer-vp9-sort`
+* `--compat-options 2021`: Same as `--compat-options 2022,no-certifi,filename-sanitization`
 * `--compat-options 2022`: Same as `--compat-options 2023,playlist-match-filter,no-external-downloader-progress,prefer-legacy-http-handler,manifest-filesize-approx`
-* `--compat-options 2023`: Currently does nothing. Use this to enable all future compat options
+* `--compat-options 2023`: Same as `--compat-options 2024,prefer-vp9-sort`
+* `--compat-options 2024`: Same as `--compat-options mtime-by-default`. Use this to enable all future compat options
+
+The following compat options restore vulnerable behavior from before security patches:
+
+* `--compat-options allow-unsafe-ext`: Allow files with any extension (including unsafe ones) to be downloaded ([GHSA-79w7-vh3h-8g4j](<https://github.com/yt-dlp/yt-dlp/security/advisories/GHSA-79w7-vh3h-8g4j>))
+
+    > :warning: Only use if a valid file download is rejected because its extension is detected as uncommon
+    >
+    > **This option can enable remote code execution! Consider [opening an issue](<https://github.com/yt-dlp/yt-dlp/issues/new/choose>) instead!**
 
 ### Deprecated options
 
@@ -2243,13 +2316,13 @@ #### Redundant options
     --get-thumbnail                  --print thumbnail
     -e, --get-title                  --print title
     -g, --get-url                    --print urls
-    --match-title REGEX              --match-filter "title ~= (?i)REGEX"
-    --reject-title REGEX             --match-filter "title !~= (?i)REGEX"
-    --min-views COUNT                --match-filter "view_count >=? COUNT"
-    --max-views COUNT                --match-filter "view_count <=? COUNT"
-    --break-on-reject                Use --break-match-filter
-    --user-agent UA                  --add-header "User-Agent:UA"
-    --referer URL                    --add-header "Referer:URL"
+    --match-title REGEX              --match-filters "title ~= (?i)REGEX"
+    --reject-title REGEX             --match-filters "title !~= (?i)REGEX"
+    --min-views COUNT                --match-filters "view_count >=? COUNT"
+    --max-views COUNT                --match-filters "view_count <=? COUNT"
+    --break-on-reject                Use --break-match-filters
+    --user-agent UA                  --add-headers "User-Agent:UA"
+    --referer URL                    --add-headers "Referer:URL"
     --playlist-start NUMBER          -I NUMBER:
     --playlist-end NUMBER            -I :NUMBER
     --playlist-reverse               -I ::-1
@@ -2300,7 +2373,6 @@ #### Old aliases
     --dump-headers                   --print-traffic
     --dump-intermediate-pages        --dump-pages
     --force-write-download-archive   --force-write-archive
-    --load-info                      --load-info-json
     --no-clean-infojson              --no-clean-info-json
     --no-split-tracks                --no-split-chapters
     --no-write-srt                   --no-write-subs

bundle/docker/static/entrypoint.sh

@@ -2,7 +2,8 @@
 set -e
 
 source ~/.local/share/pipx/venvs/pyinstaller/bin/activate
-python -m devscripts.install_deps --include secretstorage
+python -m devscripts.install_deps -o --include build
+python -m devscripts.install_deps --include secretstorage --include curl-cffi
 python -m devscripts.make_lazy_extractors
 python devscripts/update-version.py -c "${channel}" -r "${origin}" "${version}"
 python -m bundle.pyinstaller

bundle/py2exe.py

@@ -1,59 +0,0 @@
-#!/usr/bin/env python3
-
-# Allow execution from anywhere
-import os
-import sys
-
-sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
-
-import warnings
-
-from py2exe import freeze
-
-from devscripts.utils import read_version
-
-VERSION = read_version()
-
-
-def main():
-    warnings.warn(
-        'py2exe builds do not support pycryptodomex and needs VC++14 to run. '
-        'It is recommended to run "pyinst.py" to build using pyinstaller instead')
-
-    freeze(
-        console=[{
-            'script': './yt_dlp/__main__.py',
-            'dest_base': 'yt-dlp',
-            'icon_resources': [(1, 'devscripts/logo.ico')],
-        }],
-        version_info={
-            'version': VERSION,
-            'description': 'A feature-rich command-line audio/video downloader',
-            'comments': 'Official repository: <https://github.com/yt-dlp/yt-dlp>',
-            'product_name': 'yt-dlp',
-            'product_version': VERSION,
-        },
-        options={
-            'bundle_files': 0,
-            'compressed': 1,
-            'optimize': 2,
-            'dist_dir': './dist',
-            'excludes': [
-                # py2exe cannot import Crypto
-                'Crypto',
-                'Cryptodome',
-                # py2exe appears to confuse this with our socks library.
-                # We don't use pysocks and urllib3.contrib.socks would fail to import if tried.
-                'urllib3.contrib.socks'
-            ],
-            'dll_excludes': ['w9xpopen.exe', 'crypt32.dll'],
-            # Modules that are only imported dynamically must be added here
-            'includes': ['yt_dlp.compat._legacy', 'yt_dlp.compat._deprecated',
-                         'yt_dlp.utils._legacy', 'yt_dlp.utils._deprecated'],
-        },
-        zipfile=None,
-    )
-
-
-if __name__ == '__main__':
-    main()

bundle/pyinstaller.py

@@ -36,6 +36,9 @@ def main():
         f'--name={name}',
         '--icon=devscripts/logo.ico',
         '--upx-exclude=vcruntime140.dll',
+        # Ref: https://github.com/yt-dlp/yt-dlp/issues/13311
+        #      https://github.com/pyinstaller/pyinstaller/issues/9149
+        '--exclude-module=pkg_resources',
         '--noconfirm',
         '--additional-hooks-dir=yt_dlp/__pyinstaller',
         *opts,
@@ -59,16 +62,22 @@ def parse_options():
 
 def exe(onedir):
     """@returns (name, path)"""
+    platform_name, machine, extension = {
+        'win32': (None, MACHINE, '.exe'),
+        'darwin': ('macos', None, None),
+    }.get(OS_NAME, (OS_NAME, MACHINE, None))
+
     name = '_'.join(filter(None, (
         'yt-dlp',
-        {'win32': '', 'darwin': 'macos'}.get(OS_NAME, OS_NAME),
-        MACHINE,
+        platform_name,
+        machine,
     )))
+
     return name, ''.join(filter(None, (
         'dist/',
         onedir and f'{name}/',
         name,
-        OS_NAME == 'win32' and '.exe'
+        extension,
     )))
 
 
@@ -113,7 +122,7 @@ def windows_set_version(exe, version):
         ),
         kids=[
             StringFileInfo([StringTable('040904B0', [
-                StringStruct('Comments', 'yt-dlp%s Command Line Interface' % suffix),
+                StringStruct('Comments', f'yt-dlp{suffix} Command Line Interface'),
                 StringStruct('CompanyName', 'https://github.com/yt-dlp'),
                 StringStruct('FileDescription', 'yt-dlp%s' % (MACHINE and f' ({MACHINE})')),
                 StringStruct('FileVersion', version),
@@ -123,8 +132,8 @@ def windows_set_version(exe, version):
                 StringStruct('ProductName', f'yt-dlp{suffix}'),
                 StringStruct(
                     'ProductVersion', f'{version}{suffix} on Python {platform.python_version()}'),
-            ])]), VarFileInfo([VarStruct('Translation', [0, 1200])])
-        ]
+            ])]), VarFileInfo([VarStruct('Translation', [0, 1200])]),
+        ],
     ))
 
 

devscripts/bash-completion.in

@@ -6,13 +6,17 @@ __yt_dlp()
     prev="${COMP_WORDS[COMP_CWORD-1]}"
     opts="{{flags}}"
     keywords=":ytfavorites :ytrecommended :ytsubscriptions :ytwatchlater :ythistory"
-    fileopts="-a|--batch-file|--download-archive|--cookies|--load-info"
+    fileopts="-a|--batch-file|--download-archive|--cookies|--load-info-json"
     diropts="--cache-dir"
 
     if [[ ${prev} =~ ${fileopts} ]]; then
+        local IFS=$'\n'
+        type compopt &>/dev/null && compopt -o filenames
         COMPREPLY=( $(compgen -f -- ${cur}) )
         return 0
     elif [[ ${prev} =~ ${diropts} ]]; then
+        local IFS=$'\n'
+        type compopt &>/dev/null && compopt -o dirnames
         COMPREPLY=( $(compgen -d -- ${cur}) )
         return 0
     fi

devscripts/bash-completion.py

@@ -9,8 +9,8 @@
 
 import yt_dlp
 
-BASH_COMPLETION_FILE = "completions/bash/yt-dlp"
-BASH_COMPLETION_TEMPLATE = "devscripts/bash-completion.in"
+BASH_COMPLETION_FILE = 'completions/bash/yt-dlp'
+BASH_COMPLETION_TEMPLATE = 'devscripts/bash-completion.in'
 
 
 def build_completion(opt_parser):
@@ -21,9 +21,9 @@ def build_completion(opt_parser):
             opts_flag.append(option.get_opt_string())
     with open(BASH_COMPLETION_TEMPLATE) as f:
         template = f.read()
-    with open(BASH_COMPLETION_FILE, "w") as f:
+    with open(BASH_COMPLETION_FILE, 'w') as f:
         # just using the special char
-        filled_template = template.replace("{{flags}}", " ".join(opts_flag))
+        filled_template = template.replace('{{flags}}', ' '.join(opts_flag))
         f.write(filled_template)
 
 

devscripts/changelog_override.json

@@ -169,5 +169,129 @@
         "when": "5c019f6328ad40d66561eac3c4de0b3cd070d0f6",
         "short": "[cleanup] Misc (#9765)",
         "authors": ["bashonly", "Grub4K", "seproDev"]
+    },
+    {
+        "action": "change",
+        "when": "e6a22834df1776ec4e486526f6df2bf53cb7e06f",
+        "short": "[ie/orf:on] Add `prefer_segments_playlist` extractor-arg (#10314)",
+        "authors": ["seproDev"]
+    },
+    {
+        "action": "add",
+        "when": "6aaf96a3d6e7d0d426e97e11a2fcf52fda00e733",
+        "short": "[priority] Security: [[CVE-2024-38519](https://nvd.nist.gov/vuln/detail/CVE-2024-38519)] [Properly sanitize file-extension to prevent file system modification and RCE](https://github.com/yt-dlp/yt-dlp/security/advisories/GHSA-79w7-vh3h-8g4j)\n    - Unsafe extensions are now blocked from being downloaded"
+    },
+    {
+        "action": "add",
+        "when": "6075a029dba70a89675ae1250e7cdfd91f0eba41",
+        "short": "[priority] Security: [[ie/douyutv] Do not use dangerous javascript source/URL](https://github.com/yt-dlp/yt-dlp/security/advisories/GHSA-3v33-3wmw-3785)\n    - A dependency on potentially malicious third-party JavaScript code has been removed from the Douyu extractors"
+    },
+    {
+        "action": "add",
+        "when": "fb8b7f226d251e521a89b23c415e249e5b788e5c",
+        "short": "[priority] **The minimum *recommended* Python version has been raised to 3.9**\nSince Python 3.8 will reach end-of-life in October 2024, support for it will be dropped soon. [Read more](https://github.com/yt-dlp/yt-dlp/issues/10086)"
+    },
+    {
+        "action": "change",
+        "when": "b31b81d85f00601710d4fac590c3e4efb4133283",
+        "short": "[ci] Rerun failed tests (#11143)",
+        "authors": ["Grub4K"]
+    },
+    {
+        "action": "add",
+        "when": "a886cf3e900f4a2ec00af705f883539269545609",
+        "short": "[priority] **py2exe is no longer supported**\nThis release's `yt-dlp_min.exe` will be the last, and it's actually a PyInstaller-bundled executable so that yt-dlp users updating their py2exe build with `-U` will be automatically migrated. [Read more](https://github.com/yt-dlp/yt-dlp/issues/10087)"
+    },
+    {
+        "action": "add",
+        "when": "a886cf3e900f4a2ec00af705f883539269545609",
+        "short": "[priority] **Following this release, yt-dlp's Python dependencies *must* be installed using the `default` group**\nIf you're installing yt-dlp with pip/pipx or requiring yt-dlp in your own Python project, you'll need to specify `yt-dlp[default]` if you want to also install yt-dlp's optional dependencies (which were previously included by default). [Read more](https://github.com/yt-dlp/yt-dlp/pull/11255)"
+    },
+    {
+        "action": "add",
+        "when": "87884f15580910e4e0fe0e1db73508debc657471",
+        "short": "[priority] **Beginning with this release, yt-dlp's Python dependencies *must* be installed using the `default` group**\nIf you're installing yt-dlp with pip/pipx or requiring yt-dlp in your own Python project, you'll need to specify `yt-dlp[default]` if you want to also install yt-dlp's optional dependencies (which were previously included by default). [Read more](https://github.com/yt-dlp/yt-dlp/pull/11255)"
+    },
+    {
+        "action": "add",
+        "when": "d784464399b600ba9516bbcec6286f11d68974dd",
+        "short": "[priority] **The minimum *required* Python version has been raised to 3.9**\nPython 3.8 reached its end-of-life on 2024.10.07, and yt-dlp has now removed support for it. As an unfortunate side effect, the official `yt-dlp.exe` and `yt-dlp_x86.exe` binaries are no longer supported on Windows 7. [Read more](https://github.com/yt-dlp/yt-dlp/issues/10086)"
+    },
+    {
+        "action": "change",
+        "when": "914af9a0cf51c9a3f74aa88d952bee8334c67511",
+        "short": "Expand paths in `--plugin-dirs` (#11334)",
+        "authors": ["bashonly"]
+    },
+    {
+        "action": "change",
+        "when": "c29f5a7fae93a08f3cfbb6127b2faa75145b06a0",
+        "short": "[ie/generic] Do not impersonate by default (#11336)",
+        "authors": ["bashonly"]
+    },
+    {
+        "action": "change",
+        "when": "57212a5f97ce367590aaa5c3e9a135eead8f81f7",
+        "short": "[ie/vimeo] Fix API retries (#11351)",
+        "authors": ["bashonly"]
+    },
+    {
+        "action": "add",
+        "when": "52c0ffe40ad6e8404d93296f575007b05b04c686",
+        "short": "[priority] **Login with OAuth is no longer supported for YouTube**\nDue to a change made by the site, yt-dlp is no longer able to support OAuth login for YouTube. [Read more](https://github.com/yt-dlp/yt-dlp/issues/11462#issuecomment-2471703090)"
+    },
+    {
+        "action": "change",
+        "when": "76ac023ff02f06e8c003d104f02a03deeddebdcd",
+        "short": "[ie/youtube:tab] Improve shorts title extraction (#11997)",
+        "authors": ["bashonly", "d3d9"]
+    },
+    {
+        "action": "add",
+        "when": "88eb1e7a9a2720ac89d653c0d0e40292388823bb",
+        "short": "[priority] **New option `--preset-alias`/`-t` has been added**\nThis provides convenient predefined aliases for common use cases. Available presets include `mp4`, `mp3`, `mkv`, `aac`, and `sleep`. See [the README](https://github.com/yt-dlp/yt-dlp/blob/master/README.md#preset-aliases) for more details."
+    },
+    {
+        "action": "remove",
+        "when": "d596824c2f8428362c072518856065070616e348"
+    },
+    {
+        "action": "remove",
+        "when": "7b81634fb1d15999757e7a9883daa6ef09ea785b"
+    },
+    {
+        "action": "remove",
+        "when": "500761e41acb96953a5064e951d41d190c287e46"
+    },
+    {
+        "action": "add",
+        "when": "f3008bc5f89d2691f2f8dfc51b406ef4e25281c3",
+        "short": "[priority] **Default behaviour changed from `--mtime` to `--no-mtime`**\nyt-dlp no longer applies the server modified time to downloaded files by default. [Read more](https://github.com/yt-dlp/yt-dlp/issues/12780)"
+    },
+    {
+        "action": "add",
+        "when": "959ac99e98c3215437e573c22d64be42d361e863",
+        "short": "[priority] Security: [[CVE-2025-54072](https://nvd.nist.gov/vuln/detail/CVE-2025-54072)] [Fix `--exec` placeholder expansion on Windows](https://github.com/yt-dlp/yt-dlp/security/advisories/GHSA-45hg-7f49-5h56)\n    - When `--exec` is used on Windows, the filepath expanded from `{}` (or the default placeholder) is now properly escaped"
+    },
+    {
+        "action": "change",
+        "when": "b831406a1d3be34c159835079d12bae624c43610",
+        "short": "[ie/rtve.es:program] Add extractor (#12955)",
+        "authors": ["meGAmeS1", "seproDev"]
+    },
+    {
+        "action": "add",
+        "when": "23c658b9cbe34a151f8f921ab1320bb5d4e40a4d",
+        "short": "[priority] **The minimum *recommended* Python version has been raised to 3.10**\nSince Python 3.9 will reach end-of-life in October 2025, support for it will be dropped soon. [Read more](https://github.com/yt-dlp/yt-dlp/issues/13858)"
+    },
+    {
+        "action": "add",
+        "when": "cc5a5caac5fbc0d605b52bde0778d6fd5f97b5ab",
+        "short": "[priority] **darwin_legacy_exe builds are being discontinued**\nThis release's `yt-dlp_macos_legacy` binary will likely be the last one. [Read more](https://github.com/yt-dlp/yt-dlp/issues/13856)"
+    },
+    {
+        "action": "add",
+        "when": "c76ce28e06c816eb5b261dfb6aff6e69dd9b7382",
+        "short": "[priority] **linux_armv7l_exe builds are being discontinued**\nThis release's `yt-dlp_linux_armv7l` binary could be the last one. [Read more](https://github.com/yt-dlp/yt-dlp/issues/13976)"
     }
 ]

devscripts/cli_to_api.py

@@ -1,3 +1,5 @@
+#!/usr/bin/env python3
+
 # Allow direct execution
 import os
 import sys
@@ -18,6 +20,7 @@ def parse_patched_options(opts):
         'fragment_retries': 0,
         'extract_flat': False,
         'concat_playlist': 'never',
+        'update_self': False,
     })
     yt_dlp.options.create_parser = lambda: patched_parser
     try:

devscripts/generate_aes_testdata.py

@@ -11,13 +11,12 @@
 import subprocess
 
 from yt_dlp.aes import aes_encrypt, key_expansion
-from yt_dlp.utils import intlist_to_bytes
 
 secret_msg = b'Secret message goes here'
 
 
 def hex_str(int_list):
-    return codecs.encode(intlist_to_bytes(int_list), 'hex')
+    return codecs.encode(bytes(int_list), 'hex')
 
 
 def openssl_encode(algo, key, iv):

devscripts/make_changelog.py

@@ -71,14 +71,13 @@ def group_lookup(cls):
     def get(cls, value: str) -> tuple[CommitGroup | None, str | None]:
         group, _, subgroup = (group.strip().lower() for group in value.partition('/'))
 
-        result = cls.group_lookup().get(group)
-        if not result:
-            if subgroup:
-                return None, value
-            subgroup = group
-            result = cls.subgroup_lookup().get(subgroup)
+        if result := cls.group_lookup().get(group):
+            return result, subgroup or None
 
-        return result, subgroup or None
+        if subgroup:
+            return None, value
+
+        return cls.subgroup_lookup().get(group), group or None
 
 
 @dataclass
@@ -136,8 +135,7 @@ def _format_groups(self, groups):
                 first = False
                 yield '\n<details><summary><h3>Changelog</h3></summary>\n'
 
-            group = groups[item]
-            if group:
+            if group := groups[item]:
                 yield self.format_module(item.value, group)
 
         if self._collapsible:
@@ -223,10 +221,10 @@ def format_single_change(self, info: CommitInfo):
 
         return message if not sep else f'{message}{sep}{rest}'
 
-    def _format_message_link(self, message, hash):
-        assert message or hash, 'Improperly defined commit message or override'
-        message = message if message else hash[:HASH_LENGTH]
-        return f'[{message}]({self.repo_url}/commit/{hash})' if hash else message
+    def _format_message_link(self, message, commit_hash):
+        assert message or commit_hash, 'Improperly defined commit message or override'
+        message = message if message else commit_hash[:HASH_LENGTH]
+        return f'[{message}]({self.repo_url}/commit/{commit_hash})' if commit_hash else message
 
     def _format_issues(self, issues):
         return ', '.join(f'[#{issue}]({self.repo_url}/issues/{issue})' for issue in issues)
@@ -253,7 +251,7 @@ class CommitRange:
         ''', re.VERBOSE | re.DOTALL)
     EXTRACTOR_INDICATOR_RE = re.compile(r'(?:Fix|Add)\s+Extractors?', re.IGNORECASE)
     REVERT_RE = re.compile(r'(?:\[[^\]]+\]\s+)?(?i:Revert)\s+([\da-f]{40})')
-    FIXES_RE = re.compile(r'(?i:Fix(?:es)?(?:\s+bugs?)?(?:\s+in|\s+for)?|Revert|Improve)\s+([\da-f]{40})')
+    FIXES_RE = re.compile(r'(?i:(?:bug\s*)?fix(?:es)?(?:\s+bugs?)?(?:\s+in|\s+for)?|Improve)\s+([\da-f]{40})')
     UPSTREAM_MERGE_RE = re.compile(r'Update to ytdl-commit-([\da-f]+)')
 
     def __init__(self, start, end, default_author=None):
@@ -287,11 +285,16 @@ def _get_commits_and_fixes(self, default_author):
             short = next(lines)
             skip = short.startswith('Release ') or short == '[version] update'
 
+            fix_commitish = None
+            if match := self.FIXES_RE.search(short):
+                fix_commitish = match.group(1)
+
             authors = [default_author] if default_author else []
             for line in iter(lambda: next(lines), self.COMMIT_SEPARATOR):
-                match = self.AUTHOR_INDICATOR_RE.match(line)
-                if match:
+                if match := self.AUTHOR_INDICATOR_RE.match(line):
                     authors = sorted(map(str.strip, line[match.end():].split(',')), key=str.casefold)
+                if not fix_commitish and (match := self.FIXES_RE.fullmatch(line)):
+                    fix_commitish = match.group(1)
 
             commit = Commit(commit_hash, short, authors)
             if skip and (self._start or not i):
@@ -301,21 +304,17 @@ def _get_commits_and_fixes(self, default_author):
                 logger.debug(f'Reached Release commit, breaking: {commit}')
                 break
 
-            revert_match = self.REVERT_RE.fullmatch(commit.short)
-            if revert_match:
-                reverts[revert_match.group(1)] = commit
+            if match := self.REVERT_RE.fullmatch(commit.short):
+                reverts[match.group(1)] = commit
                 continue
 
-            fix_match = self.FIXES_RE.search(commit.short)
-            if fix_match:
-                commitish = fix_match.group(1)
-                fixes[commitish].append(commit)
+            if fix_commitish:
+                fixes[fix_commitish].append(commit)
 
             commits[commit.hash] = commit
 
         for commitish, revert_commit in reverts.items():
-            reverted = commits.pop(commitish, None)
-            if reverted:
+            if reverted := commits.pop(commitish, None):
                 logger.debug(f'{commitish} fully reverted {reverted}')
             else:
                 commits[revert_commit.hash] = revert_commit
@@ -356,7 +355,7 @@ def apply_overrides(self, overrides):
                 logger.info(f'CHANGE {self._commits[commit.hash]} -> {commit}')
                 self._commits[commit.hash] = commit
 
-        self._commits = {key: value for key, value in reversed(self._commits.items())}
+        self._commits = dict(reversed(self._commits.items()))
 
     def groups(self):
         group_dict = defaultdict(list)
@@ -461,8 +460,7 @@ def create_changelog(args):
 
     logger.info(f'Loaded {len(commits)} commits')
 
-    new_contributors = get_new_contributors(args.contributors_path, commits)
-    if new_contributors:
+    if new_contributors := get_new_contributors(args.contributors_path, commits):
         if args.contributors:
             write_file(args.contributors_path, '\n'.join(new_contributors) + '\n', mode='a')
         logger.info(f'New contributors: {", ".join(new_contributors)}')

devscripts/make_issue_template.py

@@ -11,11 +11,13 @@
 
 from devscripts.utils import get_filename_args, read_file, write_file
 
-VERBOSE_TMPL = '''
+VERBOSE = '''
   - type: checkboxes
     id: verbose
     attributes:
       label: Provide verbose output that clearly demonstrates the problem
+      description: |
+        This is mandatory unless absolutely impossible to provide. If you are unable to provide the output, please explain why.
       options:
         - label: Run **your** yt-dlp command with **-vU** flag added (`yt-dlp -vU <your command line>`)
           required: true
@@ -32,14 +34,15 @@
       placeholder: |
         [debug] Command-line config: ['-vU', 'https://www.youtube.com/watch?v=BaW_jenozKc']
         [debug] Encodings: locale cp65001, fs utf-8, pref cp65001, out utf-8, error utf-8, screen utf-8
-        [debug] yt-dlp version nightly@... from yt-dlp/yt-dlp [b634ba742] (win_exe)
-        [debug] Python 3.8.10 (CPython 64bit) - Windows-10-10.0.22000-SP0
-        [debug] exe versions: ffmpeg N-106550-g072101bd52-20220410 (fdk,setts), ffprobe N-106624-g391ce570c8-20220415, phantomjs 2.1.1
-        [debug] Optional libraries: Cryptodome-3.15.0, brotli-1.0.9, certifi-2022.06.15, mutagen-1.45.1, sqlite3-2.6.0, websockets-10.3
+        [debug] yt-dlp version nightly@... from yt-dlp/yt-dlp-nightly-builds [1a176d874] (win_exe)
+        [debug] Python 3.10.11 (CPython AMD64 64bit) - Windows-10-10.0.20348-SP0 (OpenSSL 1.1.1t  7 Feb 2023)
+        [debug] exe versions: ffmpeg 7.0.2 (setts), ffprobe 7.0.2
+        [debug] Optional libraries: Cryptodome-3.21.0, brotli-1.1.0, certifi-2024.08.30, curl_cffi-0.5.10, mutagen-1.47.0, requests-2.32.3, sqlite3-3.40.1, urllib3-2.2.3, websockets-13.1
         [debug] Proxy map: {}
-        [debug] Request Handlers: urllib, requests
-        [debug] Loaded 1893 extractors
-        [debug] Fetching release info: https://api.github.com/repos/yt-dlp/yt-dlp-nightly-builds/releases/latest
+        [debug] Request Handlers: urllib, requests, websockets, curl_cffi
+        [debug] Loaded 1838 extractors
+        [debug] Fetching release info: https://api.github.com/repos/yt-dlp/yt-dlp/releases/latest
+        Latest version: nightly@... from yt-dlp/yt-dlp-nightly-builds
         yt-dlp is up to date (nightly@... from yt-dlp/yt-dlp-nightly-builds)
         [youtube] Extracting URL: https://www.youtube.com/watch?v=BaW_jenozKc
         <more lines>
@@ -49,20 +52,20 @@
 '''.strip()
 
 NO_SKIP = '''
-  - type: checkboxes
+  - type: markdown
     attributes:
-      label: DO NOT REMOVE OR SKIP THE ISSUE TEMPLATE
-      description: Fill all fields even if you think it is irrelevant for the issue
-      options:
-        - label: I understand that I will be **blocked** if I *intentionally* remove or skip any mandatory\\* field
-          required: true
+      value: |
+        > [!IMPORTANT]
+        > Not providing the required (*) information or removing the template will result in your issue being closed and ignored.
 '''.strip()
 
 
 def main():
-    fields = {'no_skip': NO_SKIP}
-    fields['verbose'] = VERBOSE_TMPL % fields
-    fields['verbose_optional'] = re.sub(r'(\n\s+validations:)?\n\s+required: true', '', fields['verbose'])
+    fields = {
+        'no_skip': NO_SKIP,
+        'verbose': VERBOSE,
+        'verbose_optional': re.sub(r'(\n\s+validations:)?\n\s+required: true', '', VERBOSE),
+    }
 
     infile, outfile = get_filename_args(has_infile=True)
     write_file(outfile, read_file(infile) % fields)

devscripts/make_lazy_extractors.py

@@ -2,7 +2,6 @@
 
 # Allow direct execution
 import os
-import shutil
 import sys
 
 sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
@@ -11,6 +10,9 @@
 from inspect import getsource
 
 from devscripts.utils import get_filename_args, read_file, write_file
+from yt_dlp.extractor import import_extractors
+from yt_dlp.extractor.common import InfoExtractor, SearchInfoExtractor
+from yt_dlp.globals import extractors
 
 NO_ATTR = object()
 STATIC_CLASS_PROPERTIES = [
@@ -34,17 +36,12 @@ class {name}({bases}):
 
 
 def main():
+    os.environ['YTDLP_NO_PLUGINS'] = 'true'
+    os.environ['YTDLP_NO_LAZY_EXTRACTORS'] = 'true'
+
     lazy_extractors_filename = get_filename_args(default_outfile='yt_dlp/extractor/lazy_extractors.py')
-    if os.path.exists(lazy_extractors_filename):
-        os.remove(lazy_extractors_filename)
 
-    _ALL_CLASSES = get_all_ies()  # Must be before import
-
-    import yt_dlp.plugins
-    from yt_dlp.extractor.common import InfoExtractor, SearchInfoExtractor
-
-    # Filter out plugins
-    _ALL_CLASSES = [cls for cls in _ALL_CLASSES if not cls.__module__.startswith(f'{yt_dlp.plugins.PACKAGE_NAME}.')]
+    import_extractors()
 
     DummyInfoExtractor = type('InfoExtractor', (InfoExtractor,), {'IE_NAME': NO_ATTR})
     module_src = '\n'.join((
@@ -52,26 +49,12 @@ def main():
         '    _module = None',
         *extra_ie_code(DummyInfoExtractor),
         '\nclass LazyLoadSearchExtractor(LazyLoadExtractor):\n    pass\n',
-        *build_ies(_ALL_CLASSES, (InfoExtractor, SearchInfoExtractor), DummyInfoExtractor),
+        *build_ies(list(extractors.value.values()), (InfoExtractor, SearchInfoExtractor), DummyInfoExtractor),
     ))
 
     write_file(lazy_extractors_filename, f'{module_src}\n')
 
 
-def get_all_ies():
-    PLUGINS_DIRNAME = 'ytdlp_plugins'
-    BLOCKED_DIRNAME = f'{PLUGINS_DIRNAME}_blocked'
-    if os.path.exists(PLUGINS_DIRNAME):
-        # os.rename cannot be used, e.g. in Docker. See https://github.com/yt-dlp/yt-dlp/pull/4958
-        shutil.move(PLUGINS_DIRNAME, BLOCKED_DIRNAME)
-    try:
-        from yt_dlp.extractor.extractors import _ALL_CLASSES
-    finally:
-        if os.path.exists(BLOCKED_DIRNAME):
-            shutil.move(BLOCKED_DIRNAME, PLUGINS_DIRNAME)
-    return _ALL_CLASSES
-
-
 def extra_ie_code(ie, base=None):
     for var in STATIC_CLASS_PROPERTIES:
         val = getattr(ie, var)
@@ -92,7 +75,7 @@ def build_ies(ies, bases, attr_base):
         if ie in ies:
             names.append(ie.__name__)
 
-    yield f'\n_ALL_CLASSES = [{", ".join(names)}]'
+    yield '\n_CLASS_LOOKUP = {%s}' % ', '.join(f'{name!r}: {name}' for name in names)
 
 
 def sort_ies(ies, ignored_bases):

devscripts/make_readme.py

@@ -51,7 +51,7 @@ def apply_patch(text, patch):
     ),
     (   # Headings
         r'(?m)^  (\w.+\n)(    (?=\w))?',
-        r'## \1'
+        r'## \1',
     ),
     (   # Fixup `--date` formatting
         rf'(?m)(    --date DATE.+({delim}[^\[]+)*)\[.+({delim}.+)*$',
@@ -61,26 +61,26 @@ def apply_patch(text, patch):
     ),
     (   # Do not split URLs
         rf'({delim[:-1]})? (?P<label>\[\S+\] )?(?P<url>https?({delim})?:({delim})?/({delim})?/(({delim})?\S+)+)\s',
-        lambda mobj: ''.join((delim, mobj.group('label') or '', re.sub(r'\s+', '', mobj.group('url')), '\n'))
+        lambda mobj: ''.join((delim, mobj.group('label') or '', re.sub(r'\s+', '', mobj.group('url')), '\n')),
     ),
     (   # Do not split "words"
         rf'(?m)({delim}\S+)+$',
-        lambda mobj: ''.join((delim, mobj.group(0).replace(delim, '')))
+        lambda mobj: ''.join((delim, mobj.group(0).replace(delim, ''))),
     ),
     (   # Allow overshooting last line
         rf'(?m)^(?P<prev>.+)${delim}(?P<current>.+)$(?!{delim})',
         lambda mobj: (mobj.group().replace(delim, ' ')
                       if len(mobj.group()) - len(delim) + 1 <= max_width + ALLOWED_OVERSHOOT
-                      else mobj.group())
+                      else mobj.group()),
     ),
     (   # Avoid newline when a space is available b/w switch and description
         DISABLE_PATCH,  # This creates issues with prepare_manpage
         r'(?m)^(\s{4}-.{%d})(%s)' % (switch_col_width - 6, delim),
-        r'\1 '
+        r'\1 ',
     ),
     (   # Replace brackets with a Markdown link
         r'SponsorBlock API \((http.+)\)',
-        r'[SponsorBlock API](\1)'
+        r'[SponsorBlock API](\1)',
     ),
 )
 

devscripts/make_supportedsites.py

@@ -10,10 +10,21 @@
 from devscripts.utils import get_filename_args, write_file
 from yt_dlp.extractor import list_extractor_classes
 
+TEMPLATE = '''\
+# Supported sites
+
+Below is a list of all extractors that are currently included with yt-dlp.
+If a site is not listed here, it might still be supported by yt-dlp's embed extraction or generic extractor.
+Not all sites listed here are guaranteed to work; websites are constantly changing and sometimes this breaks yt-dlp's support for them.
+The only reliable way to check if a site is supported is to try it.
+
+{ie_list}
+'''
+
 
 def main():
     out = '\n'.join(ie.description() for ie in list_extractor_classes() if ie.IE_DESC is not False)
-    write_file(get_filename_args(), f'# Supported sites\n{out}\n')
+    write_file(get_filename_args(), TEMPLATE.format(ie_list=out))
 
 
 if __name__ == '__main__':

devscripts/run_tests.py

@@ -16,7 +16,7 @@
 def parse_args():
     parser = argparse.ArgumentParser(description='Run selected yt-dlp tests')
     parser.add_argument(
-        'test', help='a extractor tests, or one of "core" or "download"', nargs='*')
+        'test', help='an extractor test, test path, or one of "core" or "download"', nargs='*')
     parser.add_argument(
         '-k', help='run a test matching EXPRESSION. Same as "pytest -k"', metavar='EXPRESSION')
     parser.add_argument(
@@ -25,9 +25,9 @@ def parse_args():
 
 
 def run_tests(*tests, pattern=None, ci=False):
-    run_core = 'core' in tests or (not pattern and not tests)
+    # XXX: hatch uses `tests` if no arguments are passed
+    run_core = 'core' in tests or 'tests' in tests or (not pattern and not tests)
     run_download = 'download' in tests
-    tests = list(map(fix_test_name, tests))
 
     pytest_args = args.pytest_args or os.getenv('HATCH_TEST_ARGS', '')
     arguments = ['pytest', '-Werror', '--tb=short', *shlex.split(pytest_args)]
@@ -41,7 +41,9 @@ def run_tests(*tests, pattern=None, ci=False):
         arguments.extend(['-m', 'download'])
     else:
         arguments.extend(
-            f'test/test_download.py::TestDownload::test_{test}' for test in tests)
+            test if '/' in test
+            else f'test/test_download.py::TestDownload::test_{fix_test_name(test)}'
+            for test in tests)
 
     print(f'Running {arguments}', flush=True)
     try:

devscripts/set-variant.py

@@ -30,7 +30,7 @@ def property_setter(name, value):
 opts = parse_options()
 transform = compose_functions(
     property_setter('VARIANT', opts.variant),
-    property_setter('UPDATE_HINT', opts.update_message)
+    property_setter('UPDATE_HINT', opts.update_message),
 )
 
 write_file(VERSION_FILE, transform(read_file(VERSION_FILE)))

devscripts/update-version.py

@@ -24,7 +24,7 @@ def get_new_version(version, revision):
     else:
         old_version = read_version().split('.')
         if version.split('.') == old_version[:3]:
-            revision = str(int((old_version + [0])[3]) + 1)
+            revision = str(int(([*old_version, 0])[3]) + 1)
 
     return f'{version}.{revision}' if revision else version
 

devscripts/zsh-completion.py

@@ -9,15 +9,15 @@
 
 import yt_dlp
 
-ZSH_COMPLETION_FILE = "completions/zsh/_yt-dlp"
-ZSH_COMPLETION_TEMPLATE = "devscripts/zsh-completion.in"
+ZSH_COMPLETION_FILE = 'completions/zsh/_yt-dlp'
+ZSH_COMPLETION_TEMPLATE = 'devscripts/zsh-completion.in'
 
 
 def build_completion(opt_parser):
     opts = [opt for group in opt_parser.option_groups
             for opt in group.option_list]
-    opts_file = [opt for opt in opts if opt.metavar == "FILE"]
-    opts_dir = [opt for opt in opts if opt.metavar == "DIR"]
+    opts_file = [opt for opt in opts if opt.metavar == 'FILE']
+    opts_dir = [opt for opt in opts if opt.metavar == 'DIR']
 
     fileopts = []
     for opt in opts_file:
@@ -38,11 +38,11 @@ def build_completion(opt_parser):
     with open(ZSH_COMPLETION_TEMPLATE) as f:
         template = f.read()
 
-    template = template.replace("{{fileopts}}", "|".join(fileopts))
-    template = template.replace("{{diropts}}", "|".join(diropts))
-    template = template.replace("{{flags}}", " ".join(flags))
+    template = template.replace('{{fileopts}}', '|'.join(fileopts))
+    template = template.replace('{{diropts}}', '|'.join(diropts))
+    template = template.replace('{{flags}}', ' '.join(flags))
 
-    with open(ZSH_COMPLETION_FILE, "w") as f:
+    with open(ZSH_COMPLETION_FILE, 'w') as f:
         f.write(template)
 
 

pyproject.toml

@@ -9,16 +9,17 @@ maintainers = [
     {name = "Grub4K", email = "contact@grub4k.xyz"},
     {name = "bashonly", email = "bashonly@protonmail.com"},
     {name = "coletdjnz", email = "coletdjnz@protonmail.com"},
+    {name = "sepro", email = "sepro@sepr0.com"},
 ]
 description = "A feature-rich command-line audio/video downloader"
 readme = "README.md"
-requires-python = ">=3.8"
+requires-python = ">=3.9"
 keywords = [
+    "cli",
+    "downloader",
     "youtube-dl",
-    "video-downloader",
     "youtube-downloader",
     "sponsorblock",
-    "youtube-dlc",
     "yt-dlp",
 ]
 license = {file = "LICENSE"}
@@ -28,11 +29,11 @@ classifiers = [
     "Environment :: Console",
     "Programming Language :: Python",
     "Programming Language :: Python :: 3 :: Only",
-    "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
     "Programming Language :: Python :: Implementation",
     "Programming Language :: Python :: Implementation :: CPython",
     "Programming Language :: Python :: Implementation :: PyPy",
@@ -40,20 +41,22 @@ classifiers = [
     "Operating System :: OS Independent",
 ]
 dynamic = ["version"]
-dependencies = [
+dependencies = []
+
+[project.optional-dependencies]
+default = [
     "brotli; implementation_name=='cpython'",
     "brotlicffi; implementation_name!='cpython'",
     "certifi",
     "mutagen",
     "pycryptodomex",
-    "requests>=2.31.0,<3",
-    "urllib3>=1.26.17,<3",
-    "websockets>=12.0",
+    "requests>=2.32.2,<3",
+    "urllib3>=2.0.2,<3",
+    "websockets>=13.0",
+]
+curl-cffi = [
+    "curl-cffi>=0.5.10,!=0.6.*,!=0.7.*,!=0.8.*,!=0.9.*,<0.14; implementation_name=='cpython'",
 ]
-
-[project.optional-dependencies]
-default = []
-curl-cffi = ["curl-cffi==0.5.10; implementation_name=='cpython'"]
 secretstorage = [
     "cffi",
     "secretstorage",
@@ -62,7 +65,7 @@ build = [
     "build",
     "hatchling",
     "pip",
-    "setuptools>=66.1.0,<70",
+    "setuptools>=71.0.2,<81",  # See https://github.com/pyinstaller/pyinstaller/issues/9149
     "wheel",
 ]
 dev = [
@@ -72,18 +75,14 @@ dev = [
 ]
 static-analysis = [
     "autopep8~=2.0",
-    "ruff~=0.4.4",
+    "ruff~=0.12.0",
 ]
 test = [
     "pytest~=8.1",
+    "pytest-rerunfailures~=14.0",
 ]
 pyinstaller = [
-    "pyinstaller>=6.3; sys_platform!='darwin'",
-    "pyinstaller==5.13.2; sys_platform=='darwin'",  # needed for curl_cffi
-]
-py2exe = [
-    "py2exe>=0.12",
-    "requests==2.31.*",
+    "pyinstaller>=6.13.0",  # Windows temp cleanup fixed in 6.13.0
 ]
 
 [project.urls]
@@ -160,7 +159,6 @@ lint-fix = "ruff check --fix {args:.}"
 features = ["test"]
 dependencies = [
     "pytest-randomly~=3.15",
-    "pytest-rerunfailures~=14.0",
     "pytest-xdist[psutil]~=3.5",
 ]
 
@@ -170,13 +168,11 @@ run-cov = "echo Code coverage not implemented && exit 1"
 
 [[tool.hatch.envs.hatch-test.matrix]]
 python = [
-    "3.8",
     "3.9",
     "3.10",
     "3.11",
     "3.12",
-    "pypy3.8",
-    "pypy3.9",
+    "3.13",
     "pypy3.10",
 ]
 
@@ -185,21 +181,86 @@ line-length = 120
 
 [tool.ruff.lint]
 ignore = [
-    "E402",  # module level import not at top of file
-    "E501",  # line too long
-    "E731",  # do not assign a lambda expression, use a def
-    "E741",  # ambiguous variable name
+    "E402",    # module-import-not-at-top-of-file
+    "E501",    # line-too-long
+    "E731",    # lambda-assignment
+    "E741",    # ambiguous-variable-name
+    "UP031",   # printf-string-formatting
+    "UP036",   # outdated-version-block
+    "B006",    # mutable-argument-default
+    "B008",    # function-call-in-default-argument
+    "B011",    # assert-false
+    "B017",    # assert-raises-exception
+    "B023",    # function-uses-loop-variable (false positives)
+    "B028",    # no-explicit-stacklevel
+    "B904",    # raise-without-from-inside-except
+    "A005",    # stdlib-module-shadowing
+    "C401",    # unnecessary-generator-set
+    "C402",    # unnecessary-generator-dict
+    "PIE790",  # unnecessary-placeholder
+    "SIM102",  # collapsible-if
+    "SIM108",  # if-else-block-instead-of-if-exp
+    "SIM112",  # uncapitalized-environment-variables
+    "SIM113",  # enumerate-for-loop
+    "SIM114",  # if-with-same-arms
+    "SIM115",  # open-file-with-context-handler
+    "SIM117",  # multiple-with-statements
+    "SIM223",  # expr-and-false
+    "SIM300",  # yoda-conditions
+    "TD001",   # invalid-todo-tag
+    "TD002",   # missing-todo-author
+    "TD003",   # missing-todo-link
+    "PLC0415", # import-outside-top-level
+    "PLE0604", # invalid-all-object (false positives)
+    "PLE0643", # potential-index-error (false positives)
+    "PLW0603", # global-statement
+    "PLW1510", # subprocess-run-without-check
+    "PLW1641", # eq-without-hash
+    "PLW2901", # redefined-loop-name
+    "RUF001",  # ambiguous-unicode-character-string
+    "RUF012",  # mutable-class-default
+    "RUF100",  # unused-noqa (flake8 has slightly different behavior)
 ]
 select = [
-    "E",  # pycodestyle errors
-    "W",  # pycodestyle warnings
-    "F",  # pyflakes
-    "I",  # import order
+    "E",      # pycodestyle Error
+    "W",      # pycodestyle Warning
+    "F",      # Pyflakes
+    "I",      # isort
+    "Q",      # flake8-quotes
+    "N803",   # invalid-argument-name
+    "N804",   # invalid-first-argument-name-for-class-method
+    "UP",     # pyupgrade
+    "B",      # flake8-bugbear
+    "A",      # flake8-builtins
+    "COM",    # flake8-commas
+    "C4",     # flake8-comprehensions
+    "FA",     # flake8-future-annotations
+    "ISC",    # flake8-implicit-str-concat
+    "ICN003", # banned-import-from
+    "PIE",    # flake8-pie
+    "T20",    # flake8-print
+    "RSE",    # flake8-raise
+    "RET504", # unnecessary-assign
+    "SIM",    # flake8-simplify
+    "TID251", # banned-api
+    "TD",     # flake8-todos
+    "PLC",    # Pylint Convention
+    "PLE",    # Pylint Error
+    "PLW",    # Pylint Warning
+    "RUF",    # Ruff-specific rules
 ]
 
 [tool.ruff.lint.per-file-ignores]
-"devscripts/lazy_load_template.py" = ["F401"]
-"!yt_dlp/extractor/**.py" = ["I"]
+"devscripts/lazy_load_template.py" = [
+    "F401",   # unused-import
+]
+"!yt_dlp/extractor/**.py" = [
+    "I",      # isort
+    "ICN003", # banned-import-from
+    "T20",    # flake8-print
+    "A002",   # builtin-argument-shadowing
+    "C408",   # unnecessary-collection-call
+]
 
 [tool.ruff.lint.isort]
 known-first-party = [
@@ -209,6 +270,61 @@ known-first-party = [
 ]
 relative-imports-order = "closest-to-furthest"
 
+[tool.ruff.lint.flake8-quotes]
+docstring-quotes = "double"
+multiline-quotes = "single"
+inline-quotes = "single"
+avoid-escape = false
+
+[tool.ruff.lint.pep8-naming]
+classmethod-decorators = [
+    "yt_dlp.utils.classproperty",
+]
+
+[tool.ruff.lint.flake8-import-conventions]
+banned-from = [
+    "base64",
+    "datetime",
+    "functools",
+    "glob",
+    "hashlib",
+    "itertools",
+    "json",
+    "math",
+    "os",
+    "pathlib",
+    "random",
+    "re",
+    "string",
+    "sys",
+    "time",
+    "urllib.parse",
+    "uuid",
+    "xml",
+]
+
+[tool.ruff.lint.flake8-tidy-imports.banned-api]
+"yt_dlp.compat.compat_str".msg = "Use `str` instead."
+"yt_dlp.compat.compat_b64decode".msg = "Use `base64.b64decode` instead."
+"yt_dlp.compat.compat_urlparse".msg = "Use `urllib.parse` instead."
+"yt_dlp.compat.compat_parse_qs".msg = "Use `urllib.parse.parse_qs` instead."
+"yt_dlp.compat.compat_urllib_parse_unquote".msg = "Use `urllib.parse.unquote` instead."
+"yt_dlp.compat.compat_urllib_parse_urlencode".msg = "Use `urllib.parse.urlencode` instead."
+"yt_dlp.compat.compat_urllib_parse_urlparse".msg = "Use `urllib.parse.urlparse` instead."
+"yt_dlp.compat.compat_shlex_quote".msg = "Use `yt_dlp.utils.shell_quote` instead."
+"yt_dlp.utils.error_to_compat_str".msg = "Use `str` instead."
+"yt_dlp.utils.bytes_to_intlist".msg = "Use `list` instead."
+"yt_dlp.utils.intlist_to_bytes".msg = "Use `bytes` instead."
+"yt_dlp.utils.jwt_encode_hs256".msg = "Use `yt_dlp.utils.jwt_encode` instead."
+"yt_dlp.utils.decodeArgument".msg = "Do not use"
+"yt_dlp.utils.decodeFilename".msg = "Do not use"
+"yt_dlp.utils.encodeFilename".msg = "Do not use"
+"yt_dlp.compat.compat_os_name".msg = "Use `os.name` instead."
+"yt_dlp.compat.compat_realpath".msg = "Use `os.path.realpath` instead."
+"yt_dlp.compat.functools".msg = "Use `functools` instead."
+"yt_dlp.utils.decodeOption".msg = "Do not use"
+"yt_dlp.utils.compiled_regex_type".msg = "Use `re.Pattern` instead."
+
 [tool.autopep8]
 max_line_length = 120
 recursive = true
@@ -270,9 +386,14 @@ select = [
     "W391",
     "W504",
 ]
+exclude = "*/extractor/lazy_extractors.py,*venv*,*/test/testdata/sigs/player-*.js,.idea,.vscode"
 
 [tool.pytest.ini_options]
-addopts = "-ra -v --strict-markers"
+addopts = [
+    "-ra",  # summary: all except passed
+    "--verbose",
+    "--strict-markers",
+]
 markers = [
     "download",
 ]

setup.cfg

@@ -16,7 +16,7 @@ remove-unused-variables = true
 
 [tox:tox]
 skipsdist = true
-envlist = py{38,39,310,311,312},pypy{38,39,310}
+envlist = py{39,310,311,312,313},pypy311
 skip_missing_interpreters = true
 
 [testenv]  # tox
@@ -29,7 +29,7 @@ setenv =
 
 
 [isort]
-py_version = 38
+py_version = 39
 multi_line_output = VERTICAL_HANGING_INDENT
 line_length = 80
 reverse_relative = true

test/conftest.py

@@ -22,8 +22,8 @@ def handler(request):
     class HandlerWrapper(handler):
         RH_KEY = handler.RH_KEY
 
-        def __init__(self, *args, **kwargs):
-            super().__init__(logger=FakeLogger, *args, **kwargs)
+        def __init__(self, **kwargs):
+            super().__init__(logger=FakeLogger, **kwargs)
 
     return HandlerWrapper
 
@@ -54,11 +54,11 @@ def skip_handlers_if(request, handler):
 
 def pytest_configure(config):
     config.addinivalue_line(
-        "markers", "skip_handler(handler): skip test for the given handler",
+        'markers', 'skip_handler(handler): skip test for the given handler',
     )
     config.addinivalue_line(
-        "markers", "skip_handler_if(handler): skip test for the given handler if condition is true"
+        'markers', 'skip_handler_if(handler): skip test for the given handler if condition is true',
     )
     config.addinivalue_line(
-        "markers", "skip_handlers_if(handler): skip test for handlers when the condition is true"
+        'markers', 'skip_handlers_if(handler): skip test for handlers when the condition is true',
     )

test/helper.py

@@ -9,15 +9,14 @@
 
 import yt_dlp.extractor
 from yt_dlp import YoutubeDL
-from yt_dlp.compat import compat_os_name
 from yt_dlp.utils import preferredencoding, try_call, write_string, find_available_port
 
 if 'pytest' in sys.modules:
     import pytest
     is_download_test = pytest.mark.download
 else:
-    def is_download_test(testClass):
-        return testClass
+    def is_download_test(test_class):
+        return test_class
 
 
 def get_params(override=None):
@@ -45,11 +44,11 @@ def try_rm(filename):
 
 
 def report_warning(message, *args, **kwargs):
-    '''
+    """
     Print the message to stderr, it will be prefixed with 'WARNING:'
     If stderr is a tty file the 'WARNING:' will be colored
-    '''
-    if sys.stderr.isatty() and compat_os_name != 'nt':
+    """
+    if sys.stderr.isatty() and os.name != 'nt':
         _msg_header = '\033[0;33mWARNING:\033[0m'
     else:
         _msg_header = 'WARNING:'
@@ -102,88 +101,109 @@ def getwebpagetestcases():
 md5 = lambda s: hashlib.md5(s.encode()).hexdigest()
 
 
-def expect_value(self, got, expected, field):
-    if isinstance(expected, str) and expected.startswith('re:'):
-        match_str = expected[len('re:'):]
-        match_rex = re.compile(match_str)
+def _iter_differences(got, expected, field):
+    if isinstance(expected, str):
+        op, _, val = expected.partition(':')
+        if op in ('mincount', 'maxcount', 'count'):
+            if not isinstance(got, (list, dict)):
+                yield field, f'expected either {list.__name__} or {dict.__name__}, got {type(got).__name__}'
+                return
 
-        self.assertTrue(
-            isinstance(got, str),
-            f'Expected a {str.__name__} object, but got {type(got).__name__} for field {field}')
-        self.assertTrue(
-            match_rex.match(got),
-            f'field {field} (value: {got!r}) should match {match_str!r}')
-    elif isinstance(expected, str) and expected.startswith('startswith:'):
-        start_str = expected[len('startswith:'):]
-        self.assertTrue(
-            isinstance(got, str),
-            f'Expected a {str.__name__} object, but got {type(got).__name__} for field {field}')
-        self.assertTrue(
-            got.startswith(start_str),
-            f'field {field} (value: {got!r}) should start with {start_str!r}')
-    elif isinstance(expected, str) and expected.startswith('contains:'):
-        contains_str = expected[len('contains:'):]
-        self.assertTrue(
-            isinstance(got, str),
-            f'Expected a {str.__name__} object, but got {type(got).__name__} for field {field}')
-        self.assertTrue(
-            contains_str in got,
-            f'field {field} (value: {got!r}) should contain {contains_str!r}')
-    elif isinstance(expected, type):
-        self.assertTrue(
-            isinstance(got, expected),
-            f'Expected type {expected!r} for field {field}, but got value {got!r} of type {type(got)!r}')
-    elif isinstance(expected, dict) and isinstance(got, dict):
-        expect_dict(self, got, expected)
-    elif isinstance(expected, list) and isinstance(got, list):
-        self.assertEqual(
-            len(expected), len(got),
-            'Expect a list of length %d, but got a list of length %d for field %s' % (
-                len(expected), len(got), field))
-        for index, (item_got, item_expected) in enumerate(zip(got, expected)):
-            type_got = type(item_got)
-            type_expected = type(item_expected)
-            self.assertEqual(
-                type_expected, type_got,
-                'Type mismatch for list item at index %d for field %s, expected %r, got %r' % (
-                    index, field, type_expected, type_got))
-            expect_value(self, item_got, item_expected, field)
-    else:
-        if isinstance(expected, str) and expected.startswith('md5:'):
-            self.assertTrue(
-                isinstance(got, str),
-                f'Expected field {field} to be a unicode object, but got value {got!r} of type {type(got)!r}')
-            got = 'md5:' + md5(got)
-        elif isinstance(expected, str) and re.match(r'^(?:min|max)?count:\d+', expected):
-            self.assertTrue(
-                isinstance(got, (list, dict)),
-                f'Expected field {field} to be a list or a dict, but it is of type {type(got).__name__}')
-            op, _, expected_num = expected.partition(':')
-            expected_num = int(expected_num)
+            expected_num = int(val)
+            got_num = len(got)
             if op == 'mincount':
-                assert_func = assertGreaterEqual
-                msg_tmpl = 'Expected %d items in field %s, but only got %d'
-            elif op == 'maxcount':
-                assert_func = assertLessEqual
-                msg_tmpl = 'Expected maximum %d items in field %s, but got %d'
-            elif op == 'count':
-                assert_func = assertEqual
-                msg_tmpl = 'Expected exactly %d items in field %s, but got %d'
-            else:
-                assert False
-            assert_func(
-                self, len(got), expected_num,
-                msg_tmpl % (expected_num, field, len(got)))
+                if got_num < expected_num:
+                    yield field, f'expected at least {val} items, got {got_num}'
+                return
+
+            if op == 'maxcount':
+                if got_num > expected_num:
+                    yield field, f'expected at most {val} items, got {got_num}'
+                return
+
+            assert op == 'count'
+            if got_num != expected_num:
+                yield field, f'expected exactly {val} items, got {got_num}'
             return
-        self.assertEqual(
-            expected, got,
-            f'Invalid value for field {field}, expected {expected!r}, got {got!r}')
+
+        if not isinstance(got, str):
+            yield field, f'expected {str.__name__}, got {type(got).__name__}'
+            return
+
+        if op == 're':
+            if not re.match(val, got):
+                yield field, f'should match {val!r}, got {got!r}'
+            return
+
+        if op == 'startswith':
+            if not got.startswith(val):
+                yield field, f'should start with {val!r}, got {got!r}'
+            return
+
+        if op == 'contains':
+            if not val.startswith(got):
+                yield field, f'should contain {val!r}, got {got!r}'
+            return
+
+        if op == 'md5':
+            hash_val = md5(got)
+            if hash_val != val:
+                yield field, f'expected hash {val}, got {hash_val}'
+            return
+
+        if got != expected:
+            yield field, f'expected {expected!r}, got {got!r}'
+        return
+
+    if isinstance(expected, dict) and isinstance(got, dict):
+        for key, expected_val in expected.items():
+            if key not in got:
+                yield field, f'missing key: {key!r}'
+                continue
+
+            field_name = key if field is None else f'{field}.{key}'
+            yield from _iter_differences(got[key], expected_val, field_name)
+        return
+
+    if isinstance(expected, type):
+        if not isinstance(got, expected):
+            yield field, f'expected {expected.__name__}, got {type(got).__name__}'
+        return
+
+    if isinstance(expected, list) and isinstance(got, list):
+        # TODO: clever diffing algorithm lmao
+        if len(expected) != len(got):
+            yield field, f'expected length of {len(expected)}, got {len(got)}'
+            return
+
+        for index, (got_val, expected_val) in enumerate(zip(got, expected)):
+            field_name = str(index) if field is None else f'{field}.{index}'
+            yield from _iter_differences(got_val, expected_val, field_name)
+        return
+
+    if got != expected:
+        yield field, f'expected {expected!r}, got {got!r}'
+
+
+def _expect_value(message, got, expected, field):
+    mismatches = list(_iter_differences(got, expected, field))
+    if not mismatches:
+        return
+
+    fields = [field for field, _ in mismatches if field is not None]
+    return ''.join((
+        message, f' ({", ".join(fields)})' if fields else '',
+        *(f'\n\t{field}: {message}' for field, message in mismatches)))
+
+
+def expect_value(self, got, expected, field):
+    if message := _expect_value('values differ', got, expected, field):
+        self.fail(message)
 
 
 def expect_dict(self, got_dict, expected_dict):
-    for info_field, expected in expected_dict.items():
-        got = got_dict.get(info_field)
-        expect_value(self, got, expected, info_field)
+    if message := _expect_value('dictionaries differ', got_dict, expected_dict, None):
+        self.fail(message)
 
 
 def sanitize_got_info_dict(got_dict):
@@ -224,7 +244,7 @@ def sanitize(key, value):
         test_info_dict.pop('display_id')
 
     # Remove deprecated fields
-    for old in YoutubeDL._deprecated_multivalue_fields.keys():
+    for old in YoutubeDL._deprecated_multivalue_fields:
         test_info_dict.pop(old, None)
 
     # release_year may be generated from release_date
@@ -239,6 +259,20 @@ def sanitize(key, value):
 
 
 def expect_info_dict(self, got_dict, expected_dict):
+    ALLOWED_KEYS_SORT_ORDER = (
+        # NB: Keep in sync with the docstring of extractor/common.py
+        'id', 'ext', 'direct', 'display_id', 'title', 'alt_title', 'description', 'media_type',
+        'uploader', 'uploader_id', 'uploader_url', 'channel', 'channel_id', 'channel_url', 'channel_is_verified',
+        'channel_follower_count', 'comment_count', 'view_count', 'concurrent_view_count',
+        'like_count', 'dislike_count', 'repost_count', 'average_rating', 'age_limit', 'duration', 'thumbnail', 'heatmap',
+        'chapters', 'chapter', 'chapter_number', 'chapter_id', 'start_time', 'end_time', 'section_start', 'section_end',
+        'categories', 'tags', 'cast', 'composers', 'artists', 'album_artists', 'creators', 'genres',
+        'track', 'track_number', 'track_id', 'album', 'album_type', 'disc_number',
+        'series', 'series_id', 'season', 'season_number', 'season_id', 'episode', 'episode_number', 'episode_id',
+        'timestamp', 'upload_date', 'release_timestamp', 'release_date', 'release_year', 'modified_timestamp', 'modified_date',
+        'playable_in_embed', 'availability', 'live_status', 'location', 'license', '_old_archive_ids',
+    )
+
     expect_dict(self, got_dict, expected_dict)
     # Check for the presence of mandatory fields
     if got_dict.get('_type') not in ('playlist', 'multi_video'):
@@ -246,19 +280,25 @@ def expect_info_dict(self, got_dict, expected_dict):
         if expected_dict.get('ext'):
             mandatory_fields.extend(('url', 'ext'))
         for key in mandatory_fields:
-            self.assertTrue(got_dict.get(key), 'Missing mandatory field %s' % key)
+            self.assertTrue(got_dict.get(key), f'Missing mandatory field {key}')
     # Check for mandatory fields that are automatically set by YoutubeDL
     if got_dict.get('_type', 'video') == 'video':
         for key in ['webpage_url', 'extractor', 'extractor_key']:
-            self.assertTrue(got_dict.get(key), 'Missing field: %s' % key)
+            self.assertTrue(got_dict.get(key), f'Missing field: {key}')
 
     test_info_dict = sanitize_got_info_dict(got_dict)
 
-    missing_keys = set(test_info_dict.keys()) - set(expected_dict.keys())
+    # Check for invalid/misspelled field names being returned by the extractor
+    invalid_keys = sorted(test_info_dict.keys() - ALLOWED_KEYS_SORT_ORDER)
+    self.assertFalse(invalid_keys, f'Invalid fields returned by the extractor: {", ".join(invalid_keys)}')
+
+    missing_keys = sorted(
+        test_info_dict.keys() - expected_dict.keys(),
+        key=lambda x: ALLOWED_KEYS_SORT_ORDER.index(x))
     if missing_keys:
         def _repr(v):
             if isinstance(v, str):
-                return "'%s'" % v.replace('\\', '\\\\').replace("'", "\\'").replace('\n', '\\n')
+                return "'{}'".format(v.replace('\\', '\\\\').replace("'", "\\'").replace('\n', '\\n'))
             elif isinstance(v, type):
                 return v.__name__
             else:
@@ -275,8 +315,7 @@ def _repr(v):
         write_string(info_dict_str.replace('\n', '\n        '), out=sys.stderr)
         self.assertFalse(
             missing_keys,
-            'Missing keys in test definition: %s' % (
-                ', '.join(sorted(missing_keys))))
+            'Missing keys in test definition: {}'.format(', '.join(sorted(missing_keys))))
 
 
 def assertRegexpMatches(self, text, regexp, msg=None):
@@ -285,9 +324,9 @@ def assertRegexpMatches(self, text, regexp, msg=None):
     else:
         m = re.match(regexp, text)
         if not m:
-            note = 'Regexp didn\'t match: %r not found' % (regexp)
+            note = f'Regexp didn\'t match: {regexp!r} not found'
             if len(text) < 1000:
-                note += ' in %r' % text
+                note += f' in {text!r}'
             if msg is None:
                 msg = note
             else:
@@ -310,7 +349,7 @@ def assertLessEqual(self, got, expected, msg=None):
 
 
 def assertEqual(self, got, expected, msg=None):
-    if not (got == expected):
+    if got != expected:
         if msg is None:
             msg = f'{got!r} not equal to {expected!r}'
         self.assertTrue(got == expected, msg)

test/test_InfoExtractor.py

@@ -36,6 +36,18 @@ def do_GET(self):
             self.send_header('Content-Type', 'text/html; charset=utf-8')
             self.end_headers()
             self.wfile.write(TEAPOT_RESPONSE_BODY.encode())
+        elif self.path == '/fake.m3u8':
+            self.send_response(200)
+            self.send_header('Content-Length', '1024')
+            self.end_headers()
+            self.wfile.write(1024 * b'\x00')
+        elif self.path == '/bipbop.m3u8':
+            with open('test/testdata/m3u8/bipbop_16x9.m3u8', 'rb') as f:
+                data = f.read()
+            self.send_response(200)
+            self.send_header('Content-Length', str(len(data)))
+            self.end_headers()
+            self.wfile.write(data)
         else:
             assert False
 
@@ -53,6 +65,18 @@ def setUp(self):
     def test_ie_key(self):
         self.assertEqual(get_info_extractor(YoutubeIE.ie_key()), YoutubeIE)
 
+    def test_get_netrc_login_info(self):
+        for params in [
+            {'usenetrc': True, 'netrc_location': './test/testdata/netrc/netrc'},
+            {'netrc_cmd': f'{sys.executable} ./test/testdata/netrc/print_netrc.py'},
+        ]:
+            ie = DummyIE(FakeYDL(params))
+            self.assertEqual(ie._get_netrc_login_info(netrc_machine='normal_use'), ('user', 'pass'))
+            self.assertEqual(ie._get_netrc_login_info(netrc_machine='empty_user'), ('', 'pass'))
+            self.assertEqual(ie._get_netrc_login_info(netrc_machine='empty_pass'), ('user', ''))
+            self.assertEqual(ie._get_netrc_login_info(netrc_machine='both_empty'), ('', ''))
+            self.assertEqual(ie._get_netrc_login_info(netrc_machine='nonexistent'), (None, None))
+
     def test_html_search_regex(self):
         html = '<p id="foo">Watch this <a href="http://www.youtube.com/watch?v=BaW_jenozKc">video</a></p>'
         search = lambda re, *args: self.ie._html_search_regex(re, html, *args)
@@ -262,19 +286,19 @@ def test_search_json_ld_realworld(self):
                 ''',
                 {
                     'chapters': [
-                        {"title": "Explosie Turnhout", "start_time": 70, "end_time": 440},
-                        {"title": "Jaarwisseling", "start_time": 440, "end_time": 1179},
-                        {"title": "Natuurbranden Colorado", "start_time": 1179, "end_time": 1263},
-                        {"title": "Klimaatverandering", "start_time": 1263, "end_time": 1367},
-                        {"title": "Zacht weer", "start_time": 1367, "end_time": 1383},
-                        {"title": "Financiële balans", "start_time": 1383, "end_time": 1484},
-                        {"title": "Club Brugge", "start_time": 1484, "end_time": 1575},
-                        {"title": "Mentale gezondheid bij topsporters", "start_time": 1575, "end_time": 1728},
-                        {"title": "Olympische Winterspelen", "start_time": 1728, "end_time": 1873},
-                        {"title": "Sober oudjaar in Nederland", "start_time": 1873, "end_time": 2079.23}
+                        {'title': 'Explosie Turnhout', 'start_time': 70, 'end_time': 440},
+                        {'title': 'Jaarwisseling', 'start_time': 440, 'end_time': 1179},
+                        {'title': 'Natuurbranden Colorado', 'start_time': 1179, 'end_time': 1263},
+                        {'title': 'Klimaatverandering', 'start_time': 1263, 'end_time': 1367},
+                        {'title': 'Zacht weer', 'start_time': 1367, 'end_time': 1383},
+                        {'title': 'Financiële balans', 'start_time': 1383, 'end_time': 1484},
+                        {'title': 'Club Brugge', 'start_time': 1484, 'end_time': 1575},
+                        {'title': 'Mentale gezondheid bij topsporters', 'start_time': 1575, 'end_time': 1728},
+                        {'title': 'Olympische Winterspelen', 'start_time': 1728, 'end_time': 1873},
+                        {'title': 'Sober oudjaar in Nederland', 'start_time': 1873, 'end_time': 2079.23},
                     ],
-                    'title': 'Het journaal - Aflevering 365 (Seizoen 2021)'
-                }, {}
+                    'title': 'Het journaal - Aflevering 365 (Seizoen 2021)',
+                }, {},
             ),
             (
                 # test multiple thumbnails in a list
@@ -301,13 +325,27 @@ def test_search_json_ld_realworld(self):
                     'thumbnails': [{'url': 'https://www.rainews.it/cropgd/640x360/dl/img/2021/12/30/1640886376927_GettyImages.jpg'}],
                 },
                 {},
-            )
+            ),
+            (
+                # test thumbnail_url key without URL scheme
+                r'''
+<script type="application/ld+json">
+{
+"@context": "https://schema.org",
+"@type": "VideoObject",
+"thumbnail_url": "//www.nobelprize.org/images/12693-landscape-medium-gallery.jpg"
+}</script>''',
+                {
+                    'thumbnails': [{'url': 'https://www.nobelprize.org/images/12693-landscape-medium-gallery.jpg'}],
+                },
+                {},
+            ),
         ]
         for html, expected_dict, search_json_ld_kwargs in _TESTS:
             expect_dict(
                 self,
                 self.ie._search_json_ld(html, None, **search_json_ld_kwargs),
-                expected_dict
+                expected_dict,
             )
 
     def test_download_json(self):
@@ -366,7 +404,7 @@ def test_parse_html5_media_entries(self):
                     'height': 740,
                     'tbr': 1500,
                 }],
-                'thumbnail': '//pics.r18.com/digital/amateur/mgmr105/mgmr105jp.jpg'
+                'thumbnail': '//pics.r18.com/digital/amateur/mgmr105/mgmr105jp.jpg',
             })
 
         # from https://www.csfd.cz/
@@ -419,9 +457,9 @@ def test_parse_html5_media_entries(self):
                     'height': 1080,
                 }],
                 'subtitles': {
-                    'cs': [{'url': 'https://video.csfd.cz/files/subtitles/163/344/163344115_4c388b.srt'}]
+                    'cs': [{'url': 'https://video.csfd.cz/files/subtitles/163/344/163344115_4c388b.srt'}],
                 },
-                'thumbnail': 'https://img.csfd.cz/files/images/film/video/preview/163/344/163344118_748d20.png?h360'
+                'thumbnail': 'https://img.csfd.cz/files/images/film/video/preview/163/344/163344118_748d20.png?h360',
             })
 
         # from https://tamasha.com/v/Kkdjw
@@ -452,7 +490,7 @@ def test_parse_html5_media_entries(self):
                     'ext': 'mp4',
                     'format_id': '144p',
                     'height': 144,
-                }]
+                }],
             })
 
         # from https://www.directvnow.com
@@ -470,7 +508,7 @@ def test_parse_html5_media_entries(self):
                 'formats': [{
                     'ext': 'mp4',
                     'url': 'https://cdn.directv.com/content/dam/dtv/prod/website_directvnow-international/videos/DTVN_hdr_HBO_v3.mp4',
-                }]
+                }],
             })
 
         # from https://www.directvnow.com
@@ -488,7 +526,7 @@ def test_parse_html5_media_entries(self):
                 'formats': [{
                     'url': 'https://cdn.directv.com/content/dam/dtv/prod/website_directvnow-international/videos/DTVN_hdr_HBO_v3.mp4',
                     'ext': 'mp4',
-                }]
+                }],
             })
 
         # from https://www.klarna.com/uk/
@@ -547,8 +585,8 @@ def test_extract_jwplayer_data_realworld(self):
                 'id': 'XEgvuql4',
                 'formats': [{
                     'url': 'rtmp://192.138.214.154/live/sjclive',
-                    'ext': 'flv'
-                }]
+                    'ext': 'flv',
+                }],
             })
 
         # from https://www.pornoxo.com/videos/7564/striptease-from-sexy-secretary/
@@ -588,8 +626,8 @@ def test_extract_jwplayer_data_realworld(self):
                 'thumbnail': 'https://t03.vipstreamservice.com/thumbs/pxo-full/2009-12/14/a4b2157147afe5efa93ce1978e0265289c193874e02597.flv-full-13.jpg',
                 'formats': [{
                     'url': 'https://cdn.pornoxo.com/key=MF+oEbaxqTKb50P-w9G3nA,end=1489689259,ip=104.199.146.27/ip=104.199.146.27/speed=6573765/buffer=3.0/2009-12/4b2157147afe5efa93ce1978e0265289c193874e02597.flv',
-                    'ext': 'flv'
-                }]
+                    'ext': 'flv',
+                }],
             })
 
         # from http://www.indiedb.com/games/king-machine/videos
@@ -610,12 +648,12 @@ def test_extract_jwplayer_data_realworld(self):
                 'formats': [{
                     'url': 'http://cdn.dbolical.com/cache/videos/games/1/50/49678/encode_mp4/king-machine-trailer.mp4',
                     'height': 360,
-                    'ext': 'mp4'
+                    'ext': 'mp4',
                 }, {
                     'url': 'http://cdn.dbolical.com/cache/videos/games/1/50/49678/encode720p_mp4/king-machine-trailer.mp4',
                     'height': 720,
-                    'ext': 'mp4'
-                }]
+                    'ext': 'mp4',
+                }],
             })
 
     def test_parse_m3u8_formats(self):
@@ -626,6 +664,7 @@ def test_parse_m3u8_formats(self):
                 'img_bipbop_adv_example_fmp4',
                 'https://devstreaming-cdn.apple.com/videos/streaming/examples/img_bipbop_adv_example_fmp4/master.m3u8',
                 [{
+                    # 60kbps (bitrate not provided in m3u8); sorted as worst because it's grouped with lowest bitrate video track
                     'format_id': 'aud1-English',
                     'url': 'https://devstreaming-cdn.apple.com/videos/streaming/examples/img_bipbop_adv_example_fmp4/a1/prog_index.m3u8',
                     'manifest_url': 'https://devstreaming-cdn.apple.com/videos/streaming/examples/img_bipbop_adv_example_fmp4/master.m3u8',
@@ -633,15 +672,9 @@ def test_parse_m3u8_formats(self):
                     'ext': 'mp4',
                     'protocol': 'm3u8_native',
                     'audio_ext': 'mp4',
+                    'source_preference': 0,
                 }, {
-                    'format_id': 'aud2-English',
-                    'url': 'https://devstreaming-cdn.apple.com/videos/streaming/examples/img_bipbop_adv_example_fmp4/a2/prog_index.m3u8',
-                    'manifest_url': 'https://devstreaming-cdn.apple.com/videos/streaming/examples/img_bipbop_adv_example_fmp4/master.m3u8',
-                    'language': 'en',
-                    'ext': 'mp4',
-                    'protocol': 'm3u8_native',
-                    'audio_ext': 'mp4',
-                }, {
+                    # 192kbps (bitrate not provided in m3u8)
                     'format_id': 'aud3-English',
                     'url': 'https://devstreaming-cdn.apple.com/videos/streaming/examples/img_bipbop_adv_example_fmp4/a3/prog_index.m3u8',
                     'manifest_url': 'https://devstreaming-cdn.apple.com/videos/streaming/examples/img_bipbop_adv_example_fmp4/master.m3u8',
@@ -649,6 +682,17 @@ def test_parse_m3u8_formats(self):
                     'ext': 'mp4',
                     'protocol': 'm3u8_native',
                     'audio_ext': 'mp4',
+                    'source_preference': 1,
+                }, {
+                    # 384kbps (bitrate not provided in m3u8); sorted as best because it's grouped with the highest bitrate video track
+                    'format_id': 'aud2-English',
+                    'url': 'https://devstreaming-cdn.apple.com/videos/streaming/examples/img_bipbop_adv_example_fmp4/a2/prog_index.m3u8',
+                    'manifest_url': 'https://devstreaming-cdn.apple.com/videos/streaming/examples/img_bipbop_adv_example_fmp4/master.m3u8',
+                    'language': 'en',
+                    'ext': 'mp4',
+                    'protocol': 'm3u8_native',
+                    'audio_ext': 'mp4',
+                    'source_preference': 2,
                 }, {
                     'format_id': '530',
                     'url': 'https://devstreaming-cdn.apple.com/videos/streaming/examples/img_bipbop_adv_example_fmp4/v2/prog_index.m3u8',
@@ -866,7 +910,7 @@ def test_parse_m3u8_formats(self):
                     'height': 1080,
                     'vcodec': 'avc1.64002a',
                 }],
-                {}
+                {},
             ),
             (
                 'bipbop_16x9',
@@ -990,45 +1034,45 @@ def test_parse_m3u8_formats(self):
                     'en': [{
                         'url': 'https://devstreaming-cdn.apple.com/videos/streaming/examples/bipbop_16x9/subtitles/eng/prog_index.m3u8',
                         'ext': 'vtt',
-                        'protocol': 'm3u8_native'
+                        'protocol': 'm3u8_native',
                     }, {
                         'url': 'https://devstreaming-cdn.apple.com/videos/streaming/examples/bipbop_16x9/subtitles/eng_forced/prog_index.m3u8',
                         'ext': 'vtt',
-                        'protocol': 'm3u8_native'
+                        'protocol': 'm3u8_native',
                     }],
                     'fr': [{
                         'url': 'https://devstreaming-cdn.apple.com/videos/streaming/examples/bipbop_16x9/subtitles/fra/prog_index.m3u8',
                         'ext': 'vtt',
-                        'protocol': 'm3u8_native'
+                        'protocol': 'm3u8_native',
                     }, {
                         'url': 'https://devstreaming-cdn.apple.com/videos/streaming/examples/bipbop_16x9/subtitles/fra_forced/prog_index.m3u8',
                         'ext': 'vtt',
-                        'protocol': 'm3u8_native'
+                        'protocol': 'm3u8_native',
                     }],
                     'es': [{
                         'url': 'https://devstreaming-cdn.apple.com/videos/streaming/examples/bipbop_16x9/subtitles/spa/prog_index.m3u8',
                         'ext': 'vtt',
-                        'protocol': 'm3u8_native'
+                        'protocol': 'm3u8_native',
                     }, {
                         'url': 'https://devstreaming-cdn.apple.com/videos/streaming/examples/bipbop_16x9/subtitles/spa_forced/prog_index.m3u8',
                         'ext': 'vtt',
-                        'protocol': 'm3u8_native'
+                        'protocol': 'm3u8_native',
                     }],
                     'ja': [{
                         'url': 'https://devstreaming-cdn.apple.com/videos/streaming/examples/bipbop_16x9/subtitles/jpn/prog_index.m3u8',
                         'ext': 'vtt',
-                        'protocol': 'm3u8_native'
+                        'protocol': 'm3u8_native',
                     }, {
                         'url': 'https://devstreaming-cdn.apple.com/videos/streaming/examples/bipbop_16x9/subtitles/jpn_forced/prog_index.m3u8',
                         'ext': 'vtt',
-                        'protocol': 'm3u8_native'
+                        'protocol': 'm3u8_native',
                     }],
-                }
+                },
             ),
         ]
 
         for m3u8_file, m3u8_url, expected_formats, expected_subs in _TEST_CASES:
-            with open('./test/testdata/m3u8/%s.m3u8' % m3u8_file, encoding='utf-8') as f:
+            with open(f'./test/testdata/m3u8/{m3u8_file}.m3u8', encoding='utf-8') as f:
                 formats, subs = self.ie._parse_m3u8_formats_and_subtitles(
                     f.read(), m3u8_url, ext='mp4')
                 self.ie._sort_formats(formats)
@@ -1366,14 +1410,14 @@ def test_parse_mpd_formats(self):
                             'url': 'https://sdn-global-streaming-cache-3qsdn.akamaized.net/stream/3144/files/17/07/672975/3144-kZT4LWMQw6Rh7Kpd.ism/manifest.mpd',
                             'fragment_base_url': 'https://sdn-global-streaming-cache-3qsdn.akamaized.net/stream/3144/files/17/07/672975/3144-kZT4LWMQw6Rh7Kpd.ism/dash/',
                             'protocol': 'http_dash_segments',
-                        }
-                    ]
+                        },
+                    ],
                 },
-            )
+            ),
         ]
 
         for mpd_file, mpd_url, mpd_base_url, expected_formats, expected_subtitles in _TEST_CASES:
-            with open('./test/testdata/mpd/%s.mpd' % mpd_file, encoding='utf-8') as f:
+            with open(f'./test/testdata/mpd/{mpd_file}.mpd', encoding='utf-8') as f:
                 formats, subtitles = self.ie._parse_mpd_formats_and_subtitles(
                     compat_etree_fromstring(f.read().encode()),
                     mpd_base_url=mpd_base_url, mpd_url=mpd_url)
@@ -1408,7 +1452,7 @@ def test_parse_ism_formats(self):
                         'sampling_rate': 48000,
                         'channels': 2,
                         'bits_per_sample': 16,
-                        'nal_unit_length_field': 4
+                        'nal_unit_length_field': 4,
                     },
                 }, {
                     'format_id': 'video-100',
@@ -1431,7 +1475,7 @@ def test_parse_ism_formats(self):
                         'codec_private_data': '00000001674D401FDA0544EFFC2D002CBC40000003004000000C03C60CA80000000168EF32C8',
                         'channels': 2,
                         'bits_per_sample': 16,
-                        'nal_unit_length_field': 4
+                        'nal_unit_length_field': 4,
                     },
                 }, {
                     'format_id': 'video-326',
@@ -1454,7 +1498,7 @@ def test_parse_ism_formats(self):
                         'codec_private_data': '00000001674D401FDA0241FE23FFC3BC83BA44000003000400000300C03C60CA800000000168EF32C8',
                         'channels': 2,
                         'bits_per_sample': 16,
-                        'nal_unit_length_field': 4
+                        'nal_unit_length_field': 4,
                     },
                 }, {
                     'format_id': 'video-698',
@@ -1477,7 +1521,7 @@ def test_parse_ism_formats(self):
                         'codec_private_data': '00000001674D401FDA0350BFB97FF06AF06AD1000003000100000300300F1832A00000000168EF32C8',
                         'channels': 2,
                         'bits_per_sample': 16,
-                        'nal_unit_length_field': 4
+                        'nal_unit_length_field': 4,
                     },
                 }, {
                     'format_id': 'video-1493',
@@ -1500,7 +1544,7 @@ def test_parse_ism_formats(self):
                         'codec_private_data': '00000001674D401FDA011C3DE6FFF0D890D871000003000100000300300F1832A00000000168EF32C8',
                         'channels': 2,
                         'bits_per_sample': 16,
-                        'nal_unit_length_field': 4
+                        'nal_unit_length_field': 4,
                     },
                 }, {
                     'format_id': 'video-4482',
@@ -1523,7 +1567,7 @@ def test_parse_ism_formats(self):
                         'codec_private_data': '00000001674D401FDA01A816F97FFC1ABC1AB440000003004000000C03C60CA80000000168EF32C8',
                         'channels': 2,
                         'bits_per_sample': 16,
-                        'nal_unit_length_field': 4
+                        'nal_unit_length_field': 4,
                     },
                 }],
                 {
@@ -1538,10 +1582,10 @@ def test_parse_ism_formats(self):
                                 'duration': 8880746666,
                                 'timescale': 10000000,
                                 'fourcc': 'TTML',
-                                'codec_private_data': ''
-                            }
-                        }
-                    ]
+                                'codec_private_data': '',
+                            },
+                        },
+                    ],
                 },
             ),
             (
@@ -1571,7 +1615,7 @@ def test_parse_ism_formats(self):
                         'sampling_rate': 48000,
                         'channels': 2,
                         'bits_per_sample': 16,
-                        'nal_unit_length_field': 4
+                        'nal_unit_length_field': 4,
                     },
                 }, {
                     'format_id': 'audio_deu_1-224',
@@ -1597,7 +1641,7 @@ def test_parse_ism_formats(self):
                         'sampling_rate': 48000,
                         'channels': 6,
                         'bits_per_sample': 16,
-                        'nal_unit_length_field': 4
+                        'nal_unit_length_field': 4,
                     },
                 }, {
                     'format_id': 'video_deu-23',
@@ -1622,7 +1666,7 @@ def test_parse_ism_formats(self):
                         'codec_private_data': '000000016742C00CDB06077E5C05A808080A00000300020000030009C0C02EE0177CC6300F142AE00000000168CA8DC8',
                         'channels': 2,
                         'bits_per_sample': 16,
-                        'nal_unit_length_field': 4
+                        'nal_unit_length_field': 4,
                     },
                 }, {
                     'format_id': 'video_deu-403',
@@ -1647,7 +1691,7 @@ def test_parse_ism_formats(self):
                         'codec_private_data': '00000001674D4014E98323B602D4040405000003000100000300320F1429380000000168EAECF2',
                         'channels': 2,
                         'bits_per_sample': 16,
-                        'nal_unit_length_field': 4
+                        'nal_unit_length_field': 4,
                     },
                 }, {
                     'format_id': 'video_deu-680',
@@ -1672,7 +1716,7 @@ def test_parse_ism_formats(self):
                         'codec_private_data': '00000001674D401EE981405FF2E02D4040405000000300100000030320F162D3800000000168EAECF2',
                         'channels': 2,
                         'bits_per_sample': 16,
-                        'nal_unit_length_field': 4
+                        'nal_unit_length_field': 4,
                     },
                 }, {
                     'format_id': 'video_deu-1253',
@@ -1698,7 +1742,7 @@ def test_parse_ism_formats(self):
                         'codec_private_data': '00000001674D401EE981405FF2E02D4040405000000300100000030320F162D3800000000168EAECF2',
                         'channels': 2,
                         'bits_per_sample': 16,
-                        'nal_unit_length_field': 4
+                        'nal_unit_length_field': 4,
                     },
                 }, {
                     'format_id': 'video_deu-2121',
@@ -1723,7 +1767,7 @@ def test_parse_ism_formats(self):
                         'codec_private_data': '00000001674D401EECA0601BD80B50101014000003000400000300C83C58B6580000000168E93B3C80',
                         'channels': 2,
                         'bits_per_sample': 16,
-                        'nal_unit_length_field': 4
+                        'nal_unit_length_field': 4,
                     },
                 }, {
                     'format_id': 'video_deu-3275',
@@ -1748,7 +1792,7 @@ def test_parse_ism_formats(self):
                         'codec_private_data': '00000001674D4020ECA02802DD80B501010140000003004000000C83C60C65800000000168E93B3C80',
                         'channels': 2,
                         'bits_per_sample': 16,
-                        'nal_unit_length_field': 4
+                        'nal_unit_length_field': 4,
                     },
                 }, {
                     'format_id': 'video_deu-5300',
@@ -1773,7 +1817,7 @@ def test_parse_ism_formats(self):
                         'codec_private_data': '00000001674D4028ECA03C0113F2E02D4040405000000300100000030320F18319600000000168E93B3C80',
                         'channels': 2,
                         'bits_per_sample': 16,
-                        'nal_unit_length_field': 4
+                        'nal_unit_length_field': 4,
                     },
                 }, {
                     'format_id': 'video_deu-8079',
@@ -1798,7 +1842,7 @@ def test_parse_ism_formats(self):
                         'codec_private_data': '00000001674D4028ECA03C0113F2E02D4040405000000300100000030320F18319600000000168E93B3C80',
                         'channels': 2,
                         'bits_per_sample': 16,
-                        'nal_unit_length_field': 4
+                        'nal_unit_length_field': 4,
                     },
                 }],
                 {},
@@ -1806,7 +1850,7 @@ def test_parse_ism_formats(self):
         ]
 
         for ism_file, ism_url, expected_formats, expected_subtitles in _TEST_CASES:
-            with open('./test/testdata/ism/%s.Manifest' % ism_file, encoding='utf-8') as f:
+            with open(f'./test/testdata/ism/{ism_file}.Manifest', encoding='utf-8') as f:
                 formats, subtitles = self.ie._parse_ism_formats_and_subtitles(
                     compat_etree_fromstring(f.read().encode()), ism_url=ism_url)
                 self.ie._sort_formats(formats)
@@ -1827,12 +1871,12 @@ def test_parse_f4m_formats(self):
                     'tbr': 2148,
                     'width': 1280,
                     'height': 720,
-                }]
+                }],
             ),
         ]
 
         for f4m_file, f4m_url, expected_formats in _TEST_CASES:
-            with open('./test/testdata/f4m/%s.f4m' % f4m_file, encoding='utf-8') as f:
+            with open(f'./test/testdata/f4m/{f4m_file}.f4m', encoding='utf-8') as f:
                 formats = self.ie._parse_f4m_formats(
                     compat_etree_fromstring(f.read().encode()),
                     f4m_url, None)
@@ -1873,13 +1917,13 @@ def test_parse_xspf(self):
                     }, {
                         'manifest_url': 'https://example.org/src/foo_xspf.xspf',
                         'url': 'https://example.com/track3.mp3',
-                    }]
-                }]
+                    }],
+                }],
             ),
         ]
 
         for xspf_file, xspf_url, expected_entries in _TEST_CASES:
-            with open('./test/testdata/xspf/%s.xspf' % xspf_file, encoding='utf-8') as f:
+            with open(f'./test/testdata/xspf/{xspf_file}.xspf', encoding='utf-8') as f:
                 entries = self.ie._parse_xspf(
                     compat_etree_fromstring(f.read().encode()),
                     xspf_file, xspf_url=xspf_url, xspf_base_url=xspf_url)
@@ -1902,7 +1946,7 @@ def test_response_with_expected_status_returns_content(self):
         server_thread.start()
 
         (content, urlh) = self.ie._download_webpage_handle(
-            'http://127.0.0.1:%d/teapot' % port, None,
+            f'http://127.0.0.1:{port}/teapot', None,
             expected_status=TEAPOT_RESPONSE_STATUS)
         self.assertEqual(content, TEAPOT_RESPONSE_BODY)
 
@@ -1915,6 +1959,208 @@ def test_search_nextjs_data(self):
         with self.assertWarns(DeprecationWarning):
             self.assertEqual(self.ie._search_nextjs_data('', None, default='{}'), {})
 
+    def test_search_nextjs_v13_data(self):
+        HTML = R'''
+            <script>(self.__next_f=self.__next_f||[]).push([0])</script>
+            <script>self.__next_f.push([2,"0:[\"$\",\"$L0\",null,{\"do_not_add_this\":\"fail\"}]\n"])</script>
+            <script>self.__next_f.push([1,"1:I[46975,[],\"HTTPAccessFallbackBoundary\"]\n2:I[32630,[\"8183\",\"static/chunks/8183-768193f6a9e33cdd.js\"]]\n"])</script>
+            <script nonce="abc123">self.__next_f.push([1,"e:[false,[\"$\",\"div\",null,{\"children\":[\"$\",\"$L18\",null,{\"foo\":\"bar\"}]}],false]\n    "])</script>
+            <script>self.__next_f.push([1,"2a:[[\"$\",\"div\",null,{\"className\":\"flex flex-col\",\"children\":[]}],[\"$\",\"$L16\",null,{\"meta\":{\"dateCreated\":1730489700,\"uuid\":\"40cac41d-8d29-4ef5-aa11-75047b9f0907\"}}]]\n"])</script>
+            <script>self.__next_f.push([1,"df:[\"$undefined\",[\"$\",\"div\",null,{\"children\":[\"$\",\"$L17\",null,{}],\"do_not_include_this_field\":\"fail\"}],[\"$\",\"div\",null,{\"children\":[[\"$\",\"$L19\",null,{\"duplicated_field_name\":{\"x\":1}}],[\"$\",\"$L20\",null,{\"duplicated_field_name\":{\"y\":2}}]]}],\"$undefined\"]\n"])</script>
+            <script>self.__next_f.push([3,"MzM6WyIkIiwiJEwzMiIsbnVsbCx7ImRlY29kZWQiOiJzdWNjZXNzIn1d"])</script>
+            '''
+        EXPECTED = {
+            '18': {
+                'foo': 'bar',
+            },
+            '16': {
+                'meta': {
+                    'dateCreated': 1730489700,
+                    'uuid': '40cac41d-8d29-4ef5-aa11-75047b9f0907',
+                },
+            },
+            '19': {
+                'duplicated_field_name': {'x': 1},
+            },
+            '20': {
+                'duplicated_field_name': {'y': 2},
+            },
+        }
+        self.assertEqual(self.ie._search_nextjs_v13_data(HTML, None), EXPECTED)
+        self.assertEqual(self.ie._search_nextjs_v13_data('', None, fatal=False), {})
+        self.assertEqual(self.ie._search_nextjs_v13_data(None, None, fatal=False), {})
+
+    def test_search_nuxt_json(self):
+        HTML_TMPL = '<script data-ssr="true" id="__NUXT_DATA__" type="application/json">[{}]</script>'
+        VALID_DATA = '''
+            ["ShallowReactive",1],
+            {"data":2,"state":21,"once":25,"_errors":28,"_server_errors":30},
+            ["ShallowReactive",3],
+            {"$abcdef123456":4},
+            {"podcast":5,"activeEpisodeData":7},
+            {"podcast":6,"seasons":14},
+            {"title":10,"id":11},
+            ["Reactive",8],
+            {"episode":9,"creators":18,"empty_list":20},
+            {"title":12,"id":13,"refs":34,"empty_refs":35},
+            "Series Title",
+            "podcast-id-01",
+            "Episode Title",
+            "episode-id-99",
+            [15,16,17],
+            1,
+            2,
+            3,
+            [19],
+            "Podcast Creator",
+            [],
+            {"$ssite-config":22},
+            {"env":23,"name":24,"map":26,"numbers":14},
+            "production",
+            "podcast-website",
+            ["Set"],
+            ["Reactive",27],
+            ["Map"],
+            ["ShallowReactive",29],
+            {},
+            ["NuxtError",31],
+            {"status":32,"message":33},
+            503,
+            "Service Unavailable",
+            [36,37],
+            [38,39],
+            ["Ref",40],
+            ["ShallowRef",41],
+            ["EmptyRef",42],
+            ["EmptyShallowRef",43],
+            "ref",
+            "shallow_ref",
+            "{\\"ref\\":1}",
+            "{\\"shallow_ref\\":2}"
+        '''
+        PAYLOAD = {
+            'data': {
+                '$abcdef123456': {
+                    'podcast': {
+                        'podcast': {
+                            'title': 'Series Title',
+                            'id': 'podcast-id-01',
+                        },
+                        'seasons': [1, 2, 3],
+                    },
+                    'activeEpisodeData': {
+                        'episode': {
+                            'title': 'Episode Title',
+                            'id': 'episode-id-99',
+                            'refs': ['ref', 'shallow_ref'],
+                            'empty_refs': [{'ref': 1}, {'shallow_ref': 2}],
+                        },
+                        'creators': ['Podcast Creator'],
+                        'empty_list': [],
+                    },
+                },
+            },
+            'state': {
+                '$ssite-config': {
+                    'env': 'production',
+                    'name': 'podcast-website',
+                    'map': [],
+                    'numbers': [1, 2, 3],
+                },
+            },
+            'once': [],
+            '_errors': {},
+            '_server_errors': {
+                'status': 503,
+                'message': 'Service Unavailable',
+            },
+        }
+        PARTIALLY_INVALID = [(
+            '''
+            {"data":1},
+            {"invalid_raw_list":2},
+            [15,16,17]
+            ''',
+            {'data': {'invalid_raw_list': [None, None, None]}},
+        ), (
+            '''
+            {"data":1},
+            ["EmptyRef",2],
+            "not valid JSON"
+            ''',
+            {'data': None},
+        ), (
+            '''
+            {"data":1},
+            ["EmptyShallowRef",2],
+            "not valid JSON"
+            ''',
+            {'data': None},
+        )]
+        INVALID = [
+            '''
+                []
+            ''',
+            '''
+                ["unsupported",1],
+                {"data":2},
+                {}
+            ''',
+        ]
+        DEFAULT = object()
+
+        self.assertEqual(self.ie._search_nuxt_json(HTML_TMPL.format(VALID_DATA), None), PAYLOAD)
+        self.assertEqual(self.ie._search_nuxt_json('', None, fatal=False), {})
+        self.assertIs(self.ie._search_nuxt_json('', None, default=DEFAULT), DEFAULT)
+
+        for data, expected in PARTIALLY_INVALID:
+            self.assertEqual(
+                self.ie._search_nuxt_json(HTML_TMPL.format(data), None, fatal=False), expected)
+
+        for data in INVALID:
+            self.assertIs(
+                self.ie._search_nuxt_json(HTML_TMPL.format(data), None, default=DEFAULT), DEFAULT)
+
+
+class TestInfoExtractorNetwork(unittest.TestCase):
+    def setUp(self, /):
+        self.httpd = http.server.HTTPServer(
+            ('127.0.0.1', 0), InfoExtractorTestRequestHandler)
+        self.port = http_server_port(self.httpd)
+
+        self.server_thread = threading.Thread(target=self.httpd.serve_forever)
+        self.server_thread.daemon = True
+        self.server_thread.start()
+
+        self.called = False
+
+        def require_warning(*args, **kwargs):
+            self.called = True
+
+        self.ydl = FakeYDL()
+        self.ydl.report_warning = require_warning
+        self.ie = DummyIE(self.ydl)
+
+    def tearDown(self, /):
+        self.ydl.close()
+        self.httpd.shutdown()
+        self.httpd.server_close()
+        self.server_thread.join(1)
+
+    def test_extract_m3u8_formats(self):
+        formats, subtitles = self.ie._extract_m3u8_formats_and_subtitles(
+            f'http://127.0.0.1:{self.port}/bipbop.m3u8', None, fatal=False)
+        self.assertFalse(self.called)
+        self.assertTrue(formats)
+        self.assertTrue(subtitles)
+
+    def test_extract_m3u8_formats_warning(self):
+        formats, subtitles = self.ie._extract_m3u8_formats_and_subtitles(
+            f'http://127.0.0.1:{self.port}/fake.m3u8', None, fatal=False)
+        self.assertTrue(self.called, 'Warning was not issued for binary m3u8 file')
+        self.assertFalse(formats)
+        self.assertFalse(subtitles)
+
 
 if __name__ == '__main__':
     unittest.main()

test/test_YoutubeDL.py

@@ -4,16 +4,19 @@
 import os
 import sys
 import unittest
+from unittest.mock import patch
+
+from yt_dlp.globals import all_plugins_loaded
 
 sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 
 
+import contextlib
 import copy
 import json
 
 from test.helper import FakeYDL, assertRegexpMatches, try_rm
 from yt_dlp import YoutubeDL
-from yt_dlp.compat import compat_os_name
 from yt_dlp.extractor import YoutubeIE
 from yt_dlp.extractor.common import InfoExtractor
 from yt_dlp.postprocessor.common import PostProcessor
@@ -129,8 +132,8 @@ def test(inp, *expected, multi=False):
                 'allow_multiple_audio_streams': multi,
             })
             ydl.process_ie_result(info_dict.copy())
-            downloaded = map(lambda x: x['format_id'], ydl.downloaded_info_dicts)
-            self.assertEqual(list(downloaded), list(expected))
+            downloaded = [x['format_id'] for x in ydl.downloaded_info_dicts]
+            self.assertEqual(downloaded, list(expected))
 
         test('20/47', '47')
         test('20/71/worst', '35')
@@ -234,6 +237,35 @@ def test_format_selection_video(self):
         downloaded = ydl.downloaded_info_dicts[0]
         self.assertEqual(downloaded['format_id'], 'vid-vcodec-dot')
 
+    def test_format_selection_by_vcodec_sort(self):
+        formats = [
+            {'format_id': 'av1-format', 'ext': 'mp4', 'vcodec': 'av1', 'acodec': 'none', 'url': TEST_URL},
+            {'format_id': 'vp9-hdr-format', 'ext': 'mp4', 'vcodec': 'vp09.02.50.10.01.09.18.09.00', 'acodec': 'none', 'url': TEST_URL},
+            {'format_id': 'vp9-sdr-format', 'ext': 'mp4', 'vcodec': 'vp09.00.50.08', 'acodec': 'none', 'url': TEST_URL},
+            {'format_id': 'h265-format', 'ext': 'mp4', 'vcodec': 'h265', 'acodec': 'none', 'url': TEST_URL},
+        ]
+        info_dict = _make_result(formats)
+
+        ydl = YDL({'format': 'bestvideo', 'format_sort': ['vcodec:vp9.2']})
+        ydl.process_ie_result(info_dict.copy())
+        downloaded = ydl.downloaded_info_dicts[0]
+        self.assertEqual(downloaded['format_id'], 'vp9-hdr-format')
+
+        ydl = YDL({'format': 'bestvideo', 'format_sort': ['vcodec:vp9']})
+        ydl.process_ie_result(info_dict.copy())
+        downloaded = ydl.downloaded_info_dicts[0]
+        self.assertEqual(downloaded['format_id'], 'vp9-sdr-format')
+
+        ydl = YDL({'format': 'bestvideo', 'format_sort': ['+vcodec:vp9.2']})
+        ydl.process_ie_result(info_dict.copy())
+        downloaded = ydl.downloaded_info_dicts[0]
+        self.assertEqual(downloaded['format_id'], 'vp9-hdr-format')
+
+        ydl = YDL({'format': 'bestvideo', 'format_sort': ['+vcodec:vp9']})
+        ydl.process_ie_result(info_dict.copy())
+        downloaded = ydl.downloaded_info_dicts[0]
+        self.assertEqual(downloaded['format_id'], 'vp9-sdr-format')
+
     def test_format_selection_string_ops(self):
         formats = [
             {'format_id': 'abc-cba', 'ext': 'mp4', 'url': TEST_URL},
@@ -456,11 +488,11 @@ def assert_syntax_error(format_spec):
 
     def test_format_filtering(self):
         formats = [
-            {'format_id': 'A', 'filesize': 500, 'width': 1000},
-            {'format_id': 'B', 'filesize': 1000, 'width': 500},
-            {'format_id': 'C', 'filesize': 1000, 'width': 400},
-            {'format_id': 'D', 'filesize': 2000, 'width': 600},
-            {'format_id': 'E', 'filesize': 3000},
+            {'format_id': 'A', 'filesize': 500, 'width': 1000, 'aspect_ratio': 1.0},
+            {'format_id': 'B', 'filesize': 1000, 'width': 500, 'aspect_ratio': 1.33},
+            {'format_id': 'C', 'filesize': 1000, 'width': 400, 'aspect_ratio': 1.5},
+            {'format_id': 'D', 'filesize': 2000, 'width': 600, 'aspect_ratio': 1.78},
+            {'format_id': 'E', 'filesize': 3000, 'aspect_ratio': 0.56},
             {'format_id': 'F'},
             {'format_id': 'G', 'filesize': 1000000},
         ]
@@ -515,13 +547,62 @@ def test_format_filtering(self):
         self.assertEqual(downloaded_ids, ['D', 'C', 'B'])
 
         ydl = YDL({'format': 'best[height<40]'})
-        try:
+        with contextlib.suppress(ExtractorError):
             ydl.process_ie_result(info_dict)
-        except ExtractorError:
-            pass
         self.assertEqual(ydl.downloaded_info_dicts, [])
 
-    def test_default_format_spec(self):
+        ydl = YDL({'format': 'best[aspect_ratio=1]'})
+        ydl.process_ie_result(info_dict)
+        downloaded = ydl.downloaded_info_dicts[0]
+        self.assertEqual(downloaded['format_id'], 'A')
+
+        ydl = YDL({'format': 'all[aspect_ratio > 1.00]'})
+        ydl.process_ie_result(info_dict)
+        downloaded_ids = [info['format_id'] for info in ydl.downloaded_info_dicts]
+        self.assertEqual(downloaded_ids, ['D', 'C', 'B'])
+
+        ydl = YDL({'format': 'all[aspect_ratio < 1.00]'})
+        ydl.process_ie_result(info_dict)
+        downloaded_ids = [info['format_id'] for info in ydl.downloaded_info_dicts]
+        self.assertEqual(downloaded_ids, ['E'])
+
+        ydl = YDL({'format': 'best[aspect_ratio=1.5]'})
+        ydl.process_ie_result(info_dict)
+        downloaded = ydl.downloaded_info_dicts[0]
+        self.assertEqual(downloaded['format_id'], 'C')
+
+        ydl = YDL({'format': 'all[aspect_ratio!=1]'})
+        ydl.process_ie_result(info_dict)
+        downloaded_ids = [info['format_id'] for info in ydl.downloaded_info_dicts]
+        self.assertEqual(downloaded_ids, ['E', 'D', 'C', 'B'])
+
+    @patch('yt_dlp.postprocessor.ffmpeg.FFmpegMergerPP.available', False)
+    def test_default_format_spec_without_ffmpeg(self):
+        ydl = YDL({})
+        self.assertEqual(ydl._default_format_spec({}), 'best/bestvideo+bestaudio')
+
+        ydl = YDL({'simulate': True})
+        self.assertEqual(ydl._default_format_spec({}), 'best/bestvideo+bestaudio')
+
+        ydl = YDL({})
+        self.assertEqual(ydl._default_format_spec({'is_live': True}), 'best/bestvideo+bestaudio')
+
+        ydl = YDL({'simulate': True})
+        self.assertEqual(ydl._default_format_spec({'is_live': True}), 'best/bestvideo+bestaudio')
+
+        ydl = YDL({'outtmpl': '-'})
+        self.assertEqual(ydl._default_format_spec({}), 'best/bestvideo+bestaudio')
+
+        ydl = YDL({})
+        self.assertEqual(ydl._default_format_spec({}), 'best/bestvideo+bestaudio')
+        self.assertEqual(ydl._default_format_spec({'is_live': True}), 'best/bestvideo+bestaudio')
+
+    @patch('yt_dlp.postprocessor.ffmpeg.FFmpegMergerPP.available', True)
+    @patch('yt_dlp.postprocessor.ffmpeg.FFmpegMergerPP.can_merge', lambda _: True)
+    def test_default_format_spec_with_ffmpeg(self):
+        ydl = YDL({})
+        self.assertEqual(ydl._default_format_spec({}), 'bestvideo*+bestaudio/best')
+
         ydl = YDL({'simulate': True})
         self.assertEqual(ydl._default_format_spec({}), 'bestvideo*+bestaudio/best')
 
@@ -529,13 +610,13 @@ def test_default_format_spec(self):
         self.assertEqual(ydl._default_format_spec({'is_live': True}), 'best/bestvideo+bestaudio')
 
         ydl = YDL({'simulate': True})
-        self.assertEqual(ydl._default_format_spec({'is_live': True}), 'bestvideo*+bestaudio/best')
+        self.assertEqual(ydl._default_format_spec({'is_live': True}), 'best/bestvideo+bestaudio')
 
         ydl = YDL({'outtmpl': '-'})
         self.assertEqual(ydl._default_format_spec({}), 'best/bestvideo+bestaudio')
 
         ydl = YDL({})
-        self.assertEqual(ydl._default_format_spec({}, download=False), 'bestvideo*+bestaudio/best')
+        self.assertEqual(ydl._default_format_spec({}), 'bestvideo*+bestaudio/best')
         self.assertEqual(ydl._default_format_spec({'is_live': True}), 'best/bestvideo+bestaudio')
 
 
@@ -652,8 +733,8 @@ def test_add_extra_info(self):
         'formats': [
             {'id': 'id 1', 'height': 1080, 'width': 1920},
             {'id': 'id 2', 'height': 720},
-            {'id': 'id 3'}
-        ]
+            {'id': 'id 3'},
+        ],
     }
 
     def test_prepare_outtmpl_and_filename(self):
@@ -707,6 +788,13 @@ def test(tmpl, expected, *, info=None, **params):
         test('%(width)06d.%%(ext)s', 'NA.%(ext)s')
         test('%%(width)06d.%(ext)s', '%(width)06d.mp4')
 
+        # Sanitization options
+        test('%(title3)s', (None, 'foo⧸bar⧹test'))
+        test('%(title5)s', (None, 'aei_A'), restrictfilenames=True)
+        test('%(title3)s', (None, 'foo_bar_test'), windowsfilenames=False, restrictfilenames=True)
+        if sys.platform != 'win32':
+            test('%(title3)s', (None, 'foo⧸bar\\test'), windowsfilenames=False)
+
         # ID sanitization
         test('%(id)s', '_abcd', info={'id': '_abcd'})
         test('%(some_id)s', '_abcd', info={'some_id': '_abcd'})
@@ -773,7 +861,7 @@ def expect_same_infodict(out):
         test('%(formats)j', (json.dumps(FORMATS), None))
         test('%(formats)#j', (
             json.dumps(FORMATS, indent=4),
-            json.dumps(FORMATS, indent=4).replace(':', '：').replace('"', "＂").replace('\n', ' ')
+            json.dumps(FORMATS, indent=4).replace(':', '：').replace('"', '＂').replace('\n', ' '),
         ))
         test('%(title5).3B', 'á')
         test('%(title5)U', 'áéí 𝐀')
@@ -784,8 +872,8 @@ def expect_same_infodict(out):
         test('%(filesize)#D', '1Ki')
         test('%(height)5.2D', ' 1.08k')
         test('%(title4)#S', 'foo_bar_test')
-        test('%(title4).10S', ('foo ＂bar＂ ', 'foo ＂bar＂' + ('#' if compat_os_name == 'nt' else ' ')))
-        if compat_os_name == 'nt':
+        test('%(title4).10S', ('foo ＂bar＂ ', 'foo ＂bar＂' + ('#' if os.name == 'nt' else ' ')))
+        if os.name == 'nt':
             test('%(title4)q', ('"foo ""bar"" test"', None))
             test('%(formats.:.id)#q', ('"id 1" "id 2" "id 3"', None))
             test('%(formats.0.id)#q', ('"id 1"', None))
@@ -843,14 +931,14 @@ def gen():
 
         # Empty filename
         test('%(foo|)s-%(bar|)s.%(ext)s', '-.mp4')
-        # test('%(foo|)s.%(ext)s', ('.mp4', '_.mp4'))  # fixme
-        # test('%(foo|)s', ('', '_'))  # fixme
+        # test('%(foo|)s.%(ext)s', ('.mp4', '_.mp4'))  # FIXME: ?
+        # test('%(foo|)s', ('', '_'))  # FIXME: ?
 
         # Environment variable expansion for prepare_filename
         os.environ['__yt_dlp_var'] = 'expanded'
-        envvar = '%__yt_dlp_var%' if compat_os_name == 'nt' else '$__yt_dlp_var'
+        envvar = '%__yt_dlp_var%' if os.name == 'nt' else '$__yt_dlp_var'
         test(envvar, (envvar, 'expanded'))
-        if compat_os_name == 'nt':
+        if os.name == 'nt':
             test('%s%', ('%s%', '%s%'))
             os.environ['s'] = 'expanded'
             test('%s%', ('%s%', 'expanded'))  # %s% should be expanded before escaping %s
@@ -861,7 +949,7 @@ def gen():
         test('Hello %(title1)s', 'Hello $PATH')
         test('Hello %(title2)s', 'Hello %PATH%')
         test('%(title3)s', ('foo/bar\\test', 'foo⧸bar⧹test'))
-        test('folder/%(title3)s', ('folder/foo/bar\\test', 'folder%sfoo⧸bar⧹test' % os.path.sep))
+        test('folder/%(title3)s', ('folder/foo/bar\\test', f'folder{os.path.sep}foo⧸bar⧹test'))
 
     def test_format_note(self):
         ydl = YoutubeDL()
@@ -883,22 +971,22 @@ def run(self, info):
                     f.write('EXAMPLE')
                 return [info['filepath']], info
 
-        def run_pp(params, PP):
+        def run_pp(params, pp):
             with open(filename, 'w') as f:
                 f.write('EXAMPLE')
             ydl = YoutubeDL(params)
-            ydl.add_post_processor(PP())
+            ydl.add_post_processor(pp())
             ydl.post_process(filename, {'filepath': filename})
 
         run_pp({'keepvideo': True}, SimplePP)
-        self.assertTrue(os.path.exists(filename), '%s doesn\'t exist' % filename)
-        self.assertTrue(os.path.exists(audiofile), '%s doesn\'t exist' % audiofile)
+        self.assertTrue(os.path.exists(filename), f'{filename} doesn\'t exist')
+        self.assertTrue(os.path.exists(audiofile), f'{audiofile} doesn\'t exist')
         os.unlink(filename)
         os.unlink(audiofile)
 
         run_pp({'keepvideo': False}, SimplePP)
-        self.assertFalse(os.path.exists(filename), '%s exists' % filename)
-        self.assertTrue(os.path.exists(audiofile), '%s doesn\'t exist' % audiofile)
+        self.assertFalse(os.path.exists(filename), f'{filename} exists')
+        self.assertTrue(os.path.exists(audiofile), f'{audiofile} doesn\'t exist')
         os.unlink(audiofile)
 
         class ModifierPP(PostProcessor):
@@ -908,7 +996,7 @@ def run(self, info):
                 return [], info
 
         run_pp({'keepvideo': False}, ModifierPP)
-        self.assertTrue(os.path.exists(filename), '%s doesn\'t exist' % filename)
+        self.assertTrue(os.path.exists(filename), f'{filename} doesn\'t exist')
         os.unlink(filename)
 
     def test_match_filter(self):
@@ -920,7 +1008,7 @@ def test_match_filter(self):
             'duration': 30,
             'filesize': 10 * 1024,
             'playlist_id': '42',
-            'uploader': "變態妍字幕版 太妍 тест",
+            'uploader': '變態妍字幕版 太妍 тест',
             'creator': "тест ' 123 ' тест--",
             'webpage_url': 'http://example.com/watch?v=shenanigans',
         }
@@ -933,7 +1021,7 @@ def test_match_filter(self):
             'description': 'foo',
             'filesize': 5 * 1024,
             'playlist_id': '43',
-            'uploader': "тест 123",
+            'uploader': 'тест 123',
             'webpage_url': 'http://example.com/watch?v=SHENANIGANS',
         }
         videos = [first, second]
@@ -1180,7 +1268,7 @@ def _real_extract(self, url):
                     })
                 return {
                     'id': video_id,
-                    'title': 'Video %s' % video_id,
+                    'title': f'Video {video_id}',
                     'formats': formats,
                 }
 
@@ -1194,8 +1282,8 @@ def _entries(self):
                         '_type': 'url_transparent',
                         'ie_key': VideoIE.ie_key(),
                         'id': video_id,
-                        'url': 'video:%s' % video_id,
-                        'title': 'Video Transparent %s' % video_id,
+                        'url': f'video:{video_id}',
+                        'title': f'Video Transparent {video_id}',
                     }
 
             def _real_extract(self, url):
@@ -1341,6 +1429,33 @@ def check_for_cookie_header(result):
         self.assertFalse(result.get('cookies'), msg='Cookies set in cookies field for wrong domain')
         self.assertFalse(ydl.cookiejar.get_cookie_header(fmt['url']), msg='Cookies set in cookiejar for wrong domain')
 
+    def test_load_plugins_compat(self):
+        # Should try to reload plugins if they haven't already been loaded
+        all_plugins_loaded.value = False
+        FakeYDL().close()
+        assert all_plugins_loaded.value
+
+    def test_close_hooks(self):
+        # Should call all registered close hooks on close
+        close_hook_called = False
+        close_hook_two_called = False
+
+        def close_hook():
+            nonlocal close_hook_called
+            close_hook_called = True
+
+        def close_hook_two():
+            nonlocal close_hook_two_called
+            close_hook_two_called = True
+
+        ydl = FakeYDL()
+        ydl.add_close_hook(close_hook)
+        ydl.add_close_hook(close_hook_two)
+
+        ydl.close()
+        self.assertTrue(close_hook_called, 'Close hook was not called')
+        self.assertTrue(close_hook_two_called, 'Close hook two was not called')
+
 
 if __name__ == '__main__':
     unittest.main()

test/test_aes.py

@@ -27,7 +27,6 @@
     pad_block,
 )
 from yt_dlp.dependencies import Cryptodome
-from yt_dlp.utils import bytes_to_intlist, intlist_to_bytes
 
 # the encrypted data can be generate with 'devscripts/generate_aes_testdata.py'
 
@@ -40,33 +39,33 @@ def setUp(self):
     def test_encrypt(self):
         msg = b'message'
         key = list(range(16))
-        encrypted = aes_encrypt(bytes_to_intlist(msg), key)
-        decrypted = intlist_to_bytes(aes_decrypt(encrypted, key))
+        encrypted = aes_encrypt(list(msg), key)
+        decrypted = bytes(aes_decrypt(encrypted, key))
         self.assertEqual(decrypted, msg)
 
     def test_cbc_decrypt(self):
         data = b'\x97\x92+\xe5\x0b\xc3\x18\x91ky9m&\xb3\xb5@\xe6\x27\xc2\x96.\xc8u\x88\xab9-[\x9e|\xf1\xcd'
-        decrypted = intlist_to_bytes(aes_cbc_decrypt(bytes_to_intlist(data), self.key, self.iv))
+        decrypted = bytes(aes_cbc_decrypt(list(data), self.key, self.iv))
         self.assertEqual(decrypted.rstrip(b'\x08'), self.secret_msg)
         if Cryptodome.AES:
-            decrypted = aes_cbc_decrypt_bytes(data, intlist_to_bytes(self.key), intlist_to_bytes(self.iv))
+            decrypted = aes_cbc_decrypt_bytes(data, bytes(self.key), bytes(self.iv))
             self.assertEqual(decrypted.rstrip(b'\x08'), self.secret_msg)
 
     def test_cbc_encrypt(self):
-        data = bytes_to_intlist(self.secret_msg)
-        encrypted = intlist_to_bytes(aes_cbc_encrypt(data, self.key, self.iv))
+        data = list(self.secret_msg)
+        encrypted = bytes(aes_cbc_encrypt(data, self.key, self.iv))
         self.assertEqual(
             encrypted,
             b'\x97\x92+\xe5\x0b\xc3\x18\x91ky9m&\xb3\xb5@\xe6\'\xc2\x96.\xc8u\x88\xab9-[\x9e|\xf1\xcd')
 
     def test_ctr_decrypt(self):
-        data = bytes_to_intlist(b'\x03\xc7\xdd\xd4\x8e\xb3\xbc\x1a*O\xdc1\x12+8Aio\xd1z\xb5#\xaf\x08')
-        decrypted = intlist_to_bytes(aes_ctr_decrypt(data, self.key, self.iv))
+        data = list(b'\x03\xc7\xdd\xd4\x8e\xb3\xbc\x1a*O\xdc1\x12+8Aio\xd1z\xb5#\xaf\x08')
+        decrypted = bytes(aes_ctr_decrypt(data, self.key, self.iv))
         self.assertEqual(decrypted.rstrip(b'\x08'), self.secret_msg)
 
     def test_ctr_encrypt(self):
-        data = bytes_to_intlist(self.secret_msg)
-        encrypted = intlist_to_bytes(aes_ctr_encrypt(data, self.key, self.iv))
+        data = list(self.secret_msg)
+        encrypted = bytes(aes_ctr_encrypt(data, self.key, self.iv))
         self.assertEqual(
             encrypted,
             b'\x03\xc7\xdd\xd4\x8e\xb3\xbc\x1a*O\xdc1\x12+8Aio\xd1z\xb5#\xaf\x08')
@@ -75,47 +74,59 @@ def test_gcm_decrypt(self):
         data = b'\x159Y\xcf5eud\x90\x9c\x85&]\x14\x1d\x0f.\x08\xb4T\xe4/\x17\xbd'
         authentication_tag = b'\xe8&I\x80rI\x07\x9d}YWuU@:e'
 
-        decrypted = intlist_to_bytes(aes_gcm_decrypt_and_verify(
-            bytes_to_intlist(data), self.key, bytes_to_intlist(authentication_tag), self.iv[:12]))
+        decrypted = bytes(aes_gcm_decrypt_and_verify(
+            list(data), self.key, list(authentication_tag), self.iv[:12]))
         self.assertEqual(decrypted.rstrip(b'\x08'), self.secret_msg)
         if Cryptodome.AES:
             decrypted = aes_gcm_decrypt_and_verify_bytes(
-                data, intlist_to_bytes(self.key), authentication_tag, intlist_to_bytes(self.iv[:12]))
+                data, bytes(self.key), authentication_tag, bytes(self.iv[:12]))
             self.assertEqual(decrypted.rstrip(b'\x08'), self.secret_msg)
 
+    def test_gcm_aligned_decrypt(self):
+        data = b'\x159Y\xcf5eud\x90\x9c\x85&]\x14\x1d\x0f'
+        authentication_tag = b'\x08\xb1\x9d!&\x98\xd0\xeaRq\x90\xe6;\xb5]\xd8'
+
+        decrypted = bytes(aes_gcm_decrypt_and_verify(
+            list(data), self.key, list(authentication_tag), self.iv[:12]))
+        self.assertEqual(decrypted.rstrip(b'\x08'), self.secret_msg[:16])
+        if Cryptodome.AES:
+            decrypted = aes_gcm_decrypt_and_verify_bytes(
+                data, bytes(self.key), authentication_tag, bytes(self.iv[:12]))
+            self.assertEqual(decrypted.rstrip(b'\x08'), self.secret_msg[:16])
+
     def test_decrypt_text(self):
-        password = intlist_to_bytes(self.key).decode()
+        password = bytes(self.key).decode()
         encrypted = base64.b64encode(
-            intlist_to_bytes(self.iv[:8])
-            + b'\x17\x15\x93\xab\x8d\x80V\xcdV\xe0\t\xcdo\xc2\xa5\xd8ksM\r\xe27N\xae'
+            bytes(self.iv[:8])
+            + b'\x17\x15\x93\xab\x8d\x80V\xcdV\xe0\t\xcdo\xc2\xa5\xd8ksM\r\xe27N\xae',
         ).decode()
         decrypted = (aes_decrypt_text(encrypted, password, 16))
         self.assertEqual(decrypted, self.secret_msg)
 
-        password = intlist_to_bytes(self.key).decode()
+        password = bytes(self.key).decode()
         encrypted = base64.b64encode(
-            intlist_to_bytes(self.iv[:8])
-            + b'\x0b\xe6\xa4\xd9z\x0e\xb8\xb9\xd0\xd4i_\x85\x1d\x99\x98_\xe5\x80\xe7.\xbf\xa5\x83'
+            bytes(self.iv[:8])
+            + b'\x0b\xe6\xa4\xd9z\x0e\xb8\xb9\xd0\xd4i_\x85\x1d\x99\x98_\xe5\x80\xe7.\xbf\xa5\x83',
         ).decode()
         decrypted = (aes_decrypt_text(encrypted, password, 32))
         self.assertEqual(decrypted, self.secret_msg)
 
     def test_ecb_encrypt(self):
-        data = bytes_to_intlist(self.secret_msg)
-        encrypted = intlist_to_bytes(aes_ecb_encrypt(data, self.key))
+        data = list(self.secret_msg)
+        encrypted = bytes(aes_ecb_encrypt(data, self.key))
         self.assertEqual(
             encrypted,
             b'\xaa\x86]\x81\x97>\x02\x92\x9d\x1bR[[L/u\xd3&\xd1(h\xde{\x81\x94\xba\x02\xae\xbd\xa6\xd0:')
 
     def test_ecb_decrypt(self):
-        data = bytes_to_intlist(b'\xaa\x86]\x81\x97>\x02\x92\x9d\x1bR[[L/u\xd3&\xd1(h\xde{\x81\x94\xba\x02\xae\xbd\xa6\xd0:')
-        decrypted = intlist_to_bytes(aes_ecb_decrypt(data, self.key, self.iv))
+        data = list(b'\xaa\x86]\x81\x97>\x02\x92\x9d\x1bR[[L/u\xd3&\xd1(h\xde{\x81\x94\xba\x02\xae\xbd\xa6\xd0:')
+        decrypted = bytes(aes_ecb_decrypt(data, self.key, self.iv))
         self.assertEqual(decrypted.rstrip(b'\x08'), self.secret_msg)
 
     def test_key_expansion(self):
         key = '4f6bdaa39e2f8cb07f5e722d9edef314'
 
-        self.assertEqual(key_expansion(bytes_to_intlist(bytearray.fromhex(key))), [
+        self.assertEqual(key_expansion(list(bytearray.fromhex(key))), [
             0x4F, 0x6B, 0xDA, 0xA3, 0x9E, 0x2F, 0x8C, 0xB0, 0x7F, 0x5E, 0x72, 0x2D, 0x9E, 0xDE, 0xF3, 0x14,
             0x53, 0x66, 0x20, 0xA8, 0xCD, 0x49, 0xAC, 0x18, 0xB2, 0x17, 0xDE, 0x35, 0x2C, 0xC9, 0x2D, 0x21,
             0x8C, 0xBE, 0xDD, 0xD9, 0x41, 0xF7, 0x71, 0xC1, 0xF3, 0xE0, 0xAF, 0xF4, 0xDF, 0x29, 0x82, 0xD5,
@@ -132,16 +143,16 @@ def test_pad_block(self):
         block = [0x21, 0xA0, 0x43, 0xFF]
 
         self.assertEqual(pad_block(block, 'pkcs7'),
-                         block + [0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C])
+                         [*block, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C])
 
         self.assertEqual(pad_block(block, 'iso7816'),
-                         block + [0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00])
+                         [*block, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00])
 
         self.assertEqual(pad_block(block, 'whitespace'),
-                         block + [0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20])
+                         [*block, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20])
 
         self.assertEqual(pad_block(block, 'zero'),
-                         block + [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00])
+                         [*block, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00])
 
         block = list(range(16))
         for mode in ('pkcs7', 'iso7816', 'whitespace', 'zero'):

test/test_compat.py

@@ -12,27 +12,19 @@
 
 from yt_dlp import compat
 from yt_dlp.compat import urllib  # isort: split
-from yt_dlp.compat import (
-    compat_etree_fromstring,
-    compat_expanduser,
-    compat_urllib_parse_unquote,
-    compat_urllib_parse_urlencode,
-)
+from yt_dlp.compat import compat_etree_fromstring, compat_expanduser
 from yt_dlp.compat.urllib.request import getproxies
 
 
 class TestCompat(unittest.TestCase):
     def test_compat_passthrough(self):
         with self.assertWarns(DeprecationWarning):
-            compat.compat_basestring
-
-        with self.assertWarns(DeprecationWarning):
-            compat.WINDOWS_VT_MODE
+            _ = compat.compat_basestring
 
         self.assertEqual(urllib.request.getproxies, getproxies)
 
         with self.assertWarns(DeprecationWarning):
-            compat.compat_pycrypto_AES  # Must not raise error
+            _ = compat.compat_pycrypto_AES  # Must not raise error
 
     def test_compat_expanduser(self):
         old_home = os.environ.get('HOME')
@@ -43,39 +35,6 @@ def test_compat_expanduser(self):
         finally:
             os.environ['HOME'] = old_home or ''
 
-    def test_compat_urllib_parse_unquote(self):
-        self.assertEqual(compat_urllib_parse_unquote('abc%20def'), 'abc def')
-        self.assertEqual(compat_urllib_parse_unquote('%7e/abc+def'), '~/abc+def')
-        self.assertEqual(compat_urllib_parse_unquote(''), '')
-        self.assertEqual(compat_urllib_parse_unquote('%'), '%')
-        self.assertEqual(compat_urllib_parse_unquote('%%'), '%%')
-        self.assertEqual(compat_urllib_parse_unquote('%%%'), '%%%')
-        self.assertEqual(compat_urllib_parse_unquote('%2F'), '/')
-        self.assertEqual(compat_urllib_parse_unquote('%2f'), '/')
-        self.assertEqual(compat_urllib_parse_unquote('%E6%B4%A5%E6%B3%A2'), '津波')
-        self.assertEqual(
-            compat_urllib_parse_unquote('''<meta property="og:description" content="%E2%96%81%E2%96%82%E2%96%83%E2%96%84%25%E2%96%85%E2%96%86%E2%96%87%E2%96%88" />
-%<a href="https://ar.wikipedia.org/wiki/%D8%AA%D8%B3%D9%88%D9%86%D8%A7%D9%85%D9%8A">%a'''),
-            '''<meta property="og:description" content="▁▂▃▄%▅▆▇█" />
-%<a href="https://ar.wikipedia.org/wiki/تسونامي">%a''')
-        self.assertEqual(
-            compat_urllib_parse_unquote('''%28%5E%E2%97%A3_%E2%97%A2%5E%29%E3%81%A3%EF%B8%BB%E3%83%87%E2%95%90%E4%B8%80    %E2%87%80    %E2%87%80    %E2%87%80    %E2%87%80    %E2%87%80    %E2%86%B6%I%Break%25Things%'''),
-            '''(^◣_◢^)っ︻デ═一    ⇀    ⇀    ⇀    ⇀    ⇀    ↶%I%Break%Things%''')
-
-    def test_compat_urllib_parse_unquote_plus(self):
-        self.assertEqual(urllib.parse.unquote_plus('abc%20def'), 'abc def')
-        self.assertEqual(urllib.parse.unquote_plus('%7e/abc+def'), '~/abc def')
-
-    def test_compat_urllib_parse_urlencode(self):
-        self.assertEqual(compat_urllib_parse_urlencode({'abc': 'def'}), 'abc=def')
-        self.assertEqual(compat_urllib_parse_urlencode({'abc': b'def'}), 'abc=def')
-        self.assertEqual(compat_urllib_parse_urlencode({b'abc': 'def'}), 'abc=def')
-        self.assertEqual(compat_urllib_parse_urlencode({b'abc': b'def'}), 'abc=def')
-        self.assertEqual(compat_urllib_parse_urlencode([('abc', 'def')]), 'abc=def')
-        self.assertEqual(compat_urllib_parse_urlencode([('abc', b'def')]), 'abc=def')
-        self.assertEqual(compat_urllib_parse_urlencode([(b'abc', 'def')]), 'abc=def')
-        self.assertEqual(compat_urllib_parse_urlencode([(b'abc', b'def')]), 'abc=def')
-
     def test_compat_etree_fromstring(self):
         xml = '''
             <root foo="bar" spam="中文">

test/test_config.py

@@ -71,7 +71,7 @@ def _generate_expected_groups():
             Path('/etc/yt-dlp.conf'),
             Path('/etc/yt-dlp/config'),
             Path('/etc/yt-dlp/config.txt'),
-        ]
+        ],
     }
 
 

test/test_cookies.py

@@ -58,6 +58,14 @@ def test_get_desktop_environment(self):
             ({'DESKTOP_SESSION': 'kde'}, _LinuxDesktopEnvironment.KDE3),
             ({'DESKTOP_SESSION': 'xfce'}, _LinuxDesktopEnvironment.XFCE),
 
+            ({'XDG_CURRENT_DESKTOP': 'my_custom_de', 'DESKTOP_SESSION': 'gnome'}, _LinuxDesktopEnvironment.GNOME),
+            ({'XDG_CURRENT_DESKTOP': 'my_custom_de', 'DESKTOP_SESSION': 'mate'}, _LinuxDesktopEnvironment.GNOME),
+            ({'XDG_CURRENT_DESKTOP': 'my_custom_de', 'DESKTOP_SESSION': 'kde4'}, _LinuxDesktopEnvironment.KDE4),
+            ({'XDG_CURRENT_DESKTOP': 'my_custom_de', 'DESKTOP_SESSION': 'kde'}, _LinuxDesktopEnvironment.KDE3),
+            ({'XDG_CURRENT_DESKTOP': 'my_custom_de', 'DESKTOP_SESSION': 'xfce'}, _LinuxDesktopEnvironment.XFCE),
+
+            ({'XDG_CURRENT_DESKTOP': 'my_custom_de', 'DESKTOP_SESSION': 'my_custom_de', 'GNOME_DESKTOP_SESSION_ID': 1}, _LinuxDesktopEnvironment.GNOME),
+
             ({'GNOME_DESKTOP_SESSION_ID': 1}, _LinuxDesktopEnvironment.GNOME),
             ({'KDE_FULL_SESSION': 1}, _LinuxDesktopEnvironment.KDE3),
             ({'KDE_FULL_SESSION': 1, 'DESKTOP_SESSION': 'kde4'}, _LinuxDesktopEnvironment.KDE4),
@@ -67,6 +75,7 @@ def test_get_desktop_environment(self):
             ({'XDG_CURRENT_DESKTOP': 'GNOME'}, _LinuxDesktopEnvironment.GNOME),
             ({'XDG_CURRENT_DESKTOP': 'GNOME:GNOME-Classic'}, _LinuxDesktopEnvironment.GNOME),
             ({'XDG_CURRENT_DESKTOP': 'GNOME : GNOME-Classic'}, _LinuxDesktopEnvironment.GNOME),
+            ({'XDG_CURRENT_DESKTOP': 'ubuntu:GNOME'}, _LinuxDesktopEnvironment.GNOME),
 
             ({'XDG_CURRENT_DESKTOP': 'Unity', 'DESKTOP_SESSION': 'gnome-fallback'}, _LinuxDesktopEnvironment.GNOME),
             ({'XDG_CURRENT_DESKTOP': 'KDE', 'KDE_SESSION_VERSION': '5'}, _LinuxDesktopEnvironment.KDE5),
@@ -104,15 +113,31 @@ def test_chrome_cookie_decryptor_linux_v11(self):
             decryptor = LinuxChromeCookieDecryptor('Chrome', Logger())
             self.assertEqual(decryptor.decrypt(encrypted_value), value)
 
+    def test_chrome_cookie_decryptor_linux_v10_meta24(self):
+        with MonkeyPatch(cookies, {'_get_linux_keyring_password': lambda *args, **kwargs: b''}):
+            encrypted_value = b'v10\x1f\xe4\x0e[\x83\x0c\xcc*kPi \xce\x8d\x1d\xbb\x80\r\x11\t\xbb\x9e^Hy\x94\xf4\x963\x9f\x82\xba\xfe\xa1\xed\xb9\xf1)\x00710\x92\xc8/<\x96B'
+            value = 'DE'
+            decryptor = LinuxChromeCookieDecryptor('Chrome', Logger(), meta_version=24)
+            self.assertEqual(decryptor.decrypt(encrypted_value), value)
+
     def test_chrome_cookie_decryptor_windows_v10(self):
         with MonkeyPatch(cookies, {
-            '_get_windows_v10_key': lambda *args, **kwargs: b'Y\xef\xad\xad\xeerp\xf0Y\xe6\x9b\x12\xc2<z\x16]\n\xbb\xb8\xcb\xd7\x9bA\xc3\x14e\x99{\xd6\xf4&'
+            '_get_windows_v10_key': lambda *args, **kwargs: b'Y\xef\xad\xad\xeerp\xf0Y\xe6\x9b\x12\xc2<z\x16]\n\xbb\xb8\xcb\xd7\x9bA\xc3\x14e\x99{\xd6\xf4&',
         }):
             encrypted_value = b'v10T\xb8\xf3\xb8\x01\xa7TtcV\xfc\x88\xb8\xb8\xef\x05\xb5\xfd\x18\xc90\x009\xab\xb1\x893\x85)\x87\xe1\xa9-\xa3\xad='
             value = '32101439'
             decryptor = WindowsChromeCookieDecryptor('', Logger())
             self.assertEqual(decryptor.decrypt(encrypted_value), value)
 
+    def test_chrome_cookie_decryptor_windows_v10_meta24(self):
+        with MonkeyPatch(cookies, {
+            '_get_windows_v10_key': lambda *args, **kwargs: b'\xea\x8b\x02\xc3\xc6\xc5\x99\xc3\xa3[ j\xfa\xf6\xfcU\xac\x13u\xdc\x0c\x0e\xf1\x03\x90\xb6\xdf\xbb\x8fL\xb1\xb2',
+        }):
+            encrypted_value = b'v10dN\xe1\xacy\x84^\xe1I\xact\x03r\xfb\xe2\xce{^\x0e<(\xb0y\xeb\x01\xfb@"\x9e\x8c\xa53~\xdb*\x8f\xac\x8b\xe3\xfd3\x06\xe5\x93\x19OyOG\xb2\xfb\x1d$\xc0\xda\x13j\x9e\xfe\xc5\xa3\xa8\xfe\xd9'
+            value = '1234'
+            decryptor = WindowsChromeCookieDecryptor('', Logger(), meta_version=24)
+            self.assertEqual(decryptor.decrypt(encrypted_value), value)
+
     def test_chrome_cookie_decryptor_mac_v10(self):
         with MonkeyPatch(cookies, {'_get_mac_keyring_password': lambda *args, **kwargs: b'6eIDUdtKAacvlHwBVwvg/Q=='}):
             encrypted_value = b'v10\xb3\xbe\xad\xa1[\x9fC\xa1\x98\xe0\x9a\x01\xd9\xcf\xbfc'
@@ -121,17 +146,17 @@ def test_chrome_cookie_decryptor_mac_v10(self):
             self.assertEqual(decryptor.decrypt(encrypted_value), value)
 
     def test_safari_cookie_parsing(self):
-        cookies = \
-            b'cook\x00\x00\x00\x01\x00\x00\x00i\x00\x00\x01\x00\x01\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00Y' \
-            b'\x00\x00\x00\x00\x00\x00\x00 \x00\x00\x00\x00\x00\x00\x008\x00\x00\x00B\x00\x00\x00F\x00\x00\x00H' \
-            b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x03\xa5>\xc3A\x00\x00\x80\xc3\x07:\xc3A' \
-            b'localhost\x00foo\x00/\x00test%20%3Bcookie\x00\x00\x00\x054\x07\x17 \x05\x00\x00\x00Kbplist00\xd1\x01' \
-            b'\x02_\x10\x18NSHTTPCookieAcceptPolicy\x10\x02\x08\x0b&\x00\x00\x00\x00\x00\x00\x01\x01\x00\x00\x00' \
-            b'\x00\x00\x00\x00\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00('
+        cookies = (
+            b'cook\x00\x00\x00\x01\x00\x00\x00i\x00\x00\x01\x00\x01\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00Y'
+            b'\x00\x00\x00\x00\x00\x00\x00 \x00\x00\x00\x00\x00\x00\x008\x00\x00\x00B\x00\x00\x00F\x00\x00\x00H'
+            b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x03\xa5>\xc3A\x00\x00\x80\xc3\x07:\xc3A'
+            b'localhost\x00foo\x00/\x00test%20%3Bcookie\x00\x00\x00\x054\x07\x17 \x05\x00\x00\x00Kbplist00\xd1\x01'
+            b'\x02_\x10\x18NSHTTPCookieAcceptPolicy\x10\x02\x08\x0b&\x00\x00\x00\x00\x00\x00\x01\x01\x00\x00\x00'
+            b'\x00\x00\x00\x00\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00(')
 
         jar = parse_safari_cookies(cookies)
         self.assertEqual(len(jar), 1)
-        cookie = list(jar)[0]
+        cookie = next(iter(jar))
         self.assertEqual(cookie.domain, 'localhost')
         self.assertEqual(cookie.port, None)
         self.assertEqual(cookie.path, '/')
@@ -164,7 +189,7 @@ def _run_tests(self, *cases):
                     attributes = {
                         key: value
                         for key, value in dict(morsel).items()
-                        if value != ""
+                        if value != ''
                     }
                     self.assertEqual(attributes, expected_attributes, message)
 
@@ -174,133 +199,133 @@ def test_parsing(self):
         self._run_tests(
             # Copied from https://github.com/python/cpython/blob/v3.10.7/Lib/test/test_http_cookies.py
             (
-                "Test basic cookie",
-                "chips=ahoy; vienna=finger",
-                {"chips": "ahoy", "vienna": "finger"},
+                'Test basic cookie',
+                'chips=ahoy; vienna=finger',
+                {'chips': 'ahoy', 'vienna': 'finger'},
             ),
             (
-                "Test quoted cookie",
+                'Test quoted cookie',
                 'keebler="E=mc2; L=\\"Loves\\"; fudge=\\012;"',
-                {"keebler": 'E=mc2; L="Loves"; fudge=\012;'},
+                {'keebler': 'E=mc2; L="Loves"; fudge=\012;'},
             ),
             (
                 "Allow '=' in an unquoted value",
-                "keebler=E=mc2",
-                {"keebler": "E=mc2"},
+                'keebler=E=mc2',
+                {'keebler': 'E=mc2'},
             ),
             (
                 "Allow cookies with ':' in their name",
-                "key:term=value:term",
-                {"key:term": "value:term"},
+                'key:term=value:term',
+                {'key:term': 'value:term'},
             ),
             (
                 "Allow '[' and ']' in cookie values",
-                "a=b; c=[; d=r; f=h",
-                {"a": "b", "c": "[", "d": "r", "f": "h"},
+                'a=b; c=[; d=r; f=h',
+                {'a': 'b', 'c': '[', 'd': 'r', 'f': 'h'},
             ),
             (
-                "Test basic cookie attributes",
+                'Test basic cookie attributes',
                 'Customer="WILE_E_COYOTE"; Version=1; Path=/acme',
-                {"Customer": ("WILE_E_COYOTE", {"version": "1", "path": "/acme"})},
+                {'Customer': ('WILE_E_COYOTE', {'version': '1', 'path': '/acme'})},
             ),
             (
-                "Test flag only cookie attributes",
+                'Test flag only cookie attributes',
                 'Customer="WILE_E_COYOTE"; HttpOnly; Secure',
-                {"Customer": ("WILE_E_COYOTE", {"httponly": True, "secure": True})},
+                {'Customer': ('WILE_E_COYOTE', {'httponly': True, 'secure': True})},
             ),
             (
-                "Test flag only attribute with values",
-                "eggs=scrambled; httponly=foo; secure=bar; Path=/bacon",
-                {"eggs": ("scrambled", {"httponly": "foo", "secure": "bar", "path": "/bacon"})},
+                'Test flag only attribute with values',
+                'eggs=scrambled; httponly=foo; secure=bar; Path=/bacon',
+                {'eggs': ('scrambled', {'httponly': 'foo', 'secure': 'bar', 'path': '/bacon'})},
             ),
             (
                 "Test special case for 'expires' attribute, 4 digit year",
                 'Customer="W"; expires=Wed, 01 Jan 2010 00:00:00 GMT',
-                {"Customer": ("W", {"expires": "Wed, 01 Jan 2010 00:00:00 GMT"})},
+                {'Customer': ('W', {'expires': 'Wed, 01 Jan 2010 00:00:00 GMT'})},
             ),
             (
                 "Test special case for 'expires' attribute, 2 digit year",
                 'Customer="W"; expires=Wed, 01 Jan 98 00:00:00 GMT',
-                {"Customer": ("W", {"expires": "Wed, 01 Jan 98 00:00:00 GMT"})},
+                {'Customer': ('W', {'expires': 'Wed, 01 Jan 98 00:00:00 GMT'})},
             ),
             (
-                "Test extra spaces in keys and values",
-                "eggs  =  scrambled  ;  secure  ;  path  =  bar   ; foo=foo   ",
-                {"eggs": ("scrambled", {"secure": True, "path": "bar"}), "foo": "foo"},
+                'Test extra spaces in keys and values',
+                'eggs  =  scrambled  ;  secure  ;  path  =  bar   ; foo=foo   ',
+                {'eggs': ('scrambled', {'secure': True, 'path': 'bar'}), 'foo': 'foo'},
             ),
             (
-                "Test quoted attributes",
+                'Test quoted attributes',
                 'Customer="WILE_E_COYOTE"; Version="1"; Path="/acme"',
-                {"Customer": ("WILE_E_COYOTE", {"version": "1", "path": "/acme"})}
+                {'Customer': ('WILE_E_COYOTE', {'version': '1', 'path': '/acme'})},
             ),
             # Our own tests that CPython passes
             (
                 "Allow ';' in quoted value",
                 'chips="a;hoy"; vienna=finger',
-                {"chips": "a;hoy", "vienna": "finger"},
+                {'chips': 'a;hoy', 'vienna': 'finger'},
             ),
             (
-                "Keep only the last set value",
-                "a=c; a=b",
-                {"a": "b"},
+                'Keep only the last set value',
+                'a=c; a=b',
+                {'a': 'b'},
             ),
         )
 
     def test_lenient_parsing(self):
         self._run_tests(
             (
-                "Ignore and try to skip invalid cookies",
+                'Ignore and try to skip invalid cookies',
                 'chips={"ahoy;": 1}; vienna="finger;"',
-                {"vienna": "finger;"},
+                {'vienna': 'finger;'},
             ),
             (
-                "Ignore cookies without a name",
-                "a=b; unnamed; c=d",
-                {"a": "b", "c": "d"},
+                'Ignore cookies without a name',
+                'a=b; unnamed; c=d',
+                {'a': 'b', 'c': 'd'},
             ),
             (
                 "Ignore '\"' cookie without name",
                 'a=b; "; c=d',
-                {"a": "b", "c": "d"},
+                {'a': 'b', 'c': 'd'},
             ),
             (
-                "Skip all space separated values",
-                "x a=b c=d x; e=f",
-                {"a": "b", "c": "d", "e": "f"},
+                'Skip all space separated values',
+                'x a=b c=d x; e=f',
+                {'a': 'b', 'c': 'd', 'e': 'f'},
             ),
             (
-                "Skip all space separated values",
+                'Skip all space separated values',
                 'x a=b; data={"complex": "json", "with": "key=value"}; x c=d x',
-                {"a": "b", "c": "d"},
+                {'a': 'b', 'c': 'd'},
             ),
             (
-                "Expect quote mending",
+                'Expect quote mending',
                 'a=b; invalid="; c=d',
-                {"a": "b", "c": "d"},
+                {'a': 'b', 'c': 'd'},
             ),
             (
-                "Reset morsel after invalid to not capture attributes",
-                "a=b; invalid; Version=1; c=d",
-                {"a": "b", "c": "d"},
+                'Reset morsel after invalid to not capture attributes',
+                'a=b; invalid; Version=1; c=d',
+                {'a': 'b', 'c': 'd'},
             ),
             (
-                "Reset morsel after invalid to not capture attributes",
-                "a=b; $invalid; $Version=1; c=d",
-                {"a": "b", "c": "d"},
+                'Reset morsel after invalid to not capture attributes',
+                'a=b; $invalid; $Version=1; c=d',
+                {'a': 'b', 'c': 'd'},
             ),
             (
-                "Continue after non-flag attribute without value",
-                "a=b; path; Version=1; c=d",
-                {"a": "b", "c": "d"},
+                'Continue after non-flag attribute without value',
+                'a=b; path; Version=1; c=d',
+                {'a': 'b', 'c': 'd'},
             ),
             (
-                "Allow cookie attributes with `$` prefix",
+                'Allow cookie attributes with `$` prefix',
                 'Customer="WILE_E_COYOTE"; $Version=1; $Secure; $Path=/acme',
-                {"Customer": ("WILE_E_COYOTE", {"version": "1", "secure": True, "path": "/acme"})},
+                {'Customer': ('WILE_E_COYOTE', {'version': '1', 'secure': True, 'path': '/acme'})},
             ),
             (
-                "Invalid Morsel keys should not result in an error",
-                "Key=Value; [Invalid]=Value; Another=Value",
-                {"Key": "Value", "Another": "Value"},
+                'Invalid Morsel keys should not result in an error',
+                'Key=Value; [Invalid]=Value; Another=Value',
+                {'Key': 'Value', 'Another': 'Value'},
             ),
         )

test/test_devalue.py

@@ -0,0 +1,235 @@
+#!/usr/bin/env python3
+
+# Allow direct execution
+import os
+import sys
+
+sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+
+
+import datetime as dt
+import json
+import math
+import re
+import unittest
+
+from yt_dlp.utils.jslib import devalue
+
+
+TEST_CASES_EQUALS = [{
+    'name': 'int',
+    'unparsed': [-42],
+    'parsed': -42,
+}, {
+    'name': 'str',
+    'unparsed': ['woo!!!'],
+    'parsed': 'woo!!!',
+}, {
+    'name': 'Number',
+    'unparsed': [['Object', 42]],
+    'parsed': 42,
+}, {
+    'name': 'String',
+    'unparsed': [['Object', 'yar']],
+    'parsed': 'yar',
+}, {
+    'name': 'Infinity',
+    'unparsed': -4,
+    'parsed': math.inf,
+}, {
+    'name': 'negative Infinity',
+    'unparsed': -5,
+    'parsed': -math.inf,
+}, {
+    'name': 'negative zero',
+    'unparsed': -6,
+    'parsed': -0.0,
+}, {
+    'name': 'RegExp',
+    'unparsed': [['RegExp', 'regexp', 'gim']],  # XXX: flags are ignored
+    'parsed': re.compile('regexp'),
+}, {
+    'name': 'Date',
+    'unparsed': [['Date', '2001-09-09T01:46:40.000Z']],
+    'parsed': dt.datetime.fromtimestamp(1e9, tz=dt.timezone.utc),
+}, {
+    'name': 'Array',
+    'unparsed': [[1, 2, 3], 'a', 'b', 'c'],
+    'parsed': ['a', 'b', 'c'],
+}, {
+    'name': 'Array (empty)',
+    'unparsed': [[]],
+    'parsed': [],
+}, {
+    'name': 'Array (sparse)',
+    'unparsed': [[-2, 1, -2], 'b'],
+    'parsed': [None, 'b', None],
+}, {
+    'name': 'Object',
+    'unparsed': [{'foo': 1, 'x-y': 2}, 'bar', 'z'],
+    'parsed': {'foo': 'bar', 'x-y': 'z'},
+}, {
+    'name': 'Set',
+    'unparsed': [['Set', 1, 2, 3], 1, 2, 3],
+    'parsed': [1, 2, 3],
+}, {
+    'name': 'Map',
+    'unparsed': [['Map', 1, 2], 'a', 'b'],
+    'parsed': [['a', 'b']],
+}, {
+    'name': 'BigInt',
+    'unparsed': [['BigInt', '1']],
+    'parsed': 1,
+}, {
+    'name': 'Uint8Array',
+    'unparsed': [['Uint8Array', 'AQID']],
+    'parsed': [1, 2, 3],
+}, {
+    'name': 'ArrayBuffer',
+    'unparsed': [['ArrayBuffer', 'AQID']],
+    'parsed': [1, 2, 3],
+}, {
+    'name': 'str (repetition)',
+    'unparsed': [[1, 1], 'a string'],
+    'parsed': ['a string', 'a string'],
+}, {
+    'name': 'None (repetition)',
+    'unparsed': [[1, 1], None],
+    'parsed': [None, None],
+}, {
+    'name': 'dict (repetition)',
+    'unparsed': [[1, 1], {}],
+    'parsed': [{}, {}],
+}, {
+    'name': 'Object without prototype',
+    'unparsed': [['null']],
+    'parsed': {},
+}, {
+    'name': 'cross-realm POJO',
+    'unparsed': [{}],
+    'parsed': {},
+}]
+
+TEST_CASES_IS = [{
+    'name': 'bool',
+    'unparsed': [True],
+    'parsed': True,
+}, {
+    'name': 'Boolean',
+    'unparsed': [['Object', False]],
+    'parsed': False,
+}, {
+    'name': 'undefined',
+    'unparsed': -1,
+    'parsed': None,
+}, {
+    'name': 'null',
+    'unparsed': [None],
+    'parsed': None,
+}, {
+    'name': 'NaN',
+    'unparsed': -3,
+    'parsed': math.nan,
+}]
+
+TEST_CASES_INVALID = [{
+    'name': 'empty string',
+    'unparsed': '',
+    'error': ValueError,
+    'pattern': r'expected int or list as input',
+}, {
+    'name': 'hole',
+    'unparsed': -2,
+    'error': ValueError,
+    'pattern': r'invalid integer input',
+}, {
+    'name': 'string',
+    'unparsed': 'hello',
+    'error': ValueError,
+    'pattern': r'expected int or list as input',
+}, {
+    'name': 'number',
+    'unparsed': 42,
+    'error': ValueError,
+    'pattern': r'invalid integer input',
+}, {
+    'name': 'boolean',
+    'unparsed': True,
+    'error': ValueError,
+    'pattern': r'expected int or list as input',
+}, {
+    'name': 'null',
+    'unparsed': None,
+    'error': ValueError,
+    'pattern': r'expected int or list as input',
+}, {
+    'name': 'object',
+    'unparsed': {},
+    'error': ValueError,
+    'pattern': r'expected int or list as input',
+}, {
+    'name': 'empty array',
+    'unparsed': [],
+    'error': ValueError,
+    'pattern': r'expected a non-empty list as input',
+}, {
+    'name': 'Python negative indexing',
+    'unparsed': [[1, 2, 3, 4, 5, 6, 7, -7], 1, 2, 3, 4, 5, 6, 7],
+    'error': IndexError,
+    'pattern': r'invalid index: -7',
+}]
+
+
+class TestDevalue(unittest.TestCase):
+    def test_devalue_parse_equals(self):
+        for tc in TEST_CASES_EQUALS:
+            self.assertEqual(devalue.parse(tc['unparsed']), tc['parsed'], tc['name'])
+
+    def test_devalue_parse_is(self):
+        for tc in TEST_CASES_IS:
+            self.assertIs(devalue.parse(tc['unparsed']), tc['parsed'], tc['name'])
+
+    def test_devalue_parse_invalid(self):
+        for tc in TEST_CASES_INVALID:
+            with self.assertRaisesRegex(tc['error'], tc['pattern'], msg=tc['name']):
+                devalue.parse(tc['unparsed'])
+
+    def test_devalue_parse_cyclical(self):
+        name = 'Map (cyclical)'
+        result = devalue.parse([['Map', 1, 0], 'self'])
+        self.assertEqual(result[0][0], 'self', name)
+        self.assertIs(result, result[0][1], name)
+
+        name = 'Set (cyclical)'
+        result = devalue.parse([['Set', 0, 1], 42])
+        self.assertEqual(result[1], 42, name)
+        self.assertIs(result, result[0], name)
+
+        result = devalue.parse([[0]])
+        self.assertIs(result, result[0], 'Array (cyclical)')
+
+        name = 'Object (cyclical)'
+        result = devalue.parse([{'self': 0}])
+        self.assertIs(result, result['self'], name)
+
+        name = 'Object with null prototype (cyclical)'
+        result = devalue.parse([['null', 'self', 0]])
+        self.assertIs(result, result['self'], name)
+
+        name = 'Objects (cyclical)'
+        result = devalue.parse([[1, 2], {'second': 2}, {'first': 1}])
+        self.assertIs(result[0], result[1]['first'], name)
+        self.assertIs(result[1], result[0]['second'], name)
+
+    def test_devalue_parse_revivers(self):
+        self.assertEqual(
+            devalue.parse([['indirect', 1], {'a': 2}, 'b'], revivers={'indirect': lambda x: x}),
+            {'a': 'b'}, 'revivers (indirect)')
+
+        self.assertEqual(
+            devalue.parse([['parse', 1], '{"a":0}'], revivers={'parse': lambda x: json.loads(x)}),
+            {'a': 0}, 'revivers (parse)')
+
+
+if __name__ == '__main__':
+    unittest.main()

test/test_download.py

@@ -14,13 +14,13 @@
 
 from test.helper import (
     assertGreaterEqual,
+    assertLessEqual,
     expect_info_dict,
     expect_warnings,
     get_params,
     gettestcases,
     getwebpagetestcases,
     is_download_test,
-    report_warning,
     try_rm,
 )
 
@@ -66,10 +66,6 @@ def _file_md5(fn):
 
 @is_download_test
 class TestDownload(unittest.TestCase):
-    # Parallel testing in nosetests. See
-    # http://nose.readthedocs.org/en/latest/doc_tests/test_multiprocess/multiprocess.html
-    _multiprocess_shared_ = True
-
     maxDiff = None
 
     COMPLETED_TESTS = {}
@@ -94,7 +90,7 @@ def test_template(self):
             'playlist', [] if is_playlist else [test_case])
 
         def print_skipping(reason):
-            print('Skipping %s: %s' % (test_case['name'], reason))
+            print('Skipping {}: {}'.format(test_case['name'], reason))
             self.skipTest(reason)
 
         if not ie.working():
@@ -117,15 +113,18 @@ def print_skipping(reason):
 
         for other_ie in other_ies:
             if not other_ie.working():
-                print_skipping('test depends on %sIE, marked as not WORKING' % other_ie.ie_key())
+                print_skipping(f'test depends on {other_ie.ie_key()}IE, marked as not WORKING')
 
         params = get_params(test_case.get('params', {}))
         params['outtmpl'] = tname + '_' + params['outtmpl']
         if is_playlist and 'playlist' not in test_case:
-            params.setdefault('extract_flat', 'in_playlist')
-            params.setdefault('playlistend', test_case.get(
-                'playlist_mincount', test_case.get('playlist_count', -2) + 1))
+            params.setdefault('playlistend', max(
+                test_case.get('playlist_mincount', -1),
+                test_case.get('playlist_count', -2) + 1,
+                test_case.get('playlist_maxcount', -2) + 1))
             params.setdefault('skip_download', True)
+            if 'playlist_duration_sum' not in test_case:
+                params.setdefault('extract_flat', 'in_playlist')
 
         ydl = YoutubeDL(params, auto_init=False)
         ydl.add_default_info_extractors()
@@ -148,10 +147,7 @@ def match_exception(err):
                 return False
             if err.__class__.__name__ == expected_exception:
                 return True
-            for exc in err.exc_info:
-                if exc.__class__.__name__ == expected_exception:
-                    return True
-            return False
+            return any(exc.__class__.__name__ == expected_exception for exc in err.exc_info)
 
         def try_rm_tcs_files(tcs=None):
             if tcs is None:
@@ -163,6 +159,7 @@ def try_rm_tcs_files(tcs=None):
                 try_rm(os.path.splitext(tc_filename)[0] + '.info.json')
         try_rm_tcs_files()
         try:
+            test_url = test_case['url']
             try_num = 1
             while True:
                 try:
@@ -170,7 +167,7 @@ def try_rm_tcs_files(tcs=None):
                     # for outside error handling, and returns the exit code
                     # instead of the result dict.
                     res_dict = ydl.extract_info(
-                        test_case['url'],
+                        test_url,
                         force_generic_extractor=params.get('force_generic_extractor', False))
                 except (DownloadError, ExtractorError) as err:
                     # Check if the exception is not a network related one
@@ -181,8 +178,7 @@ def try_rm_tcs_files(tcs=None):
                         raise
 
                     if try_num == RETRIES:
-                        report_warning('%s failed due to network errors, skipping...' % tname)
-                        return
+                        raise
 
                     print(f'Retrying: {try_num} failed tries\n\n##########\n\n')
 
@@ -199,23 +195,23 @@ def try_rm_tcs_files(tcs=None):
                 self.assertTrue('entries' in res_dict)
                 expect_info_dict(self, res_dict, test_case.get('info_dict', {}))
 
+            num_entries = len(res_dict.get('entries', []))
             if 'playlist_mincount' in test_case:
+                mincount = test_case['playlist_mincount']
                 assertGreaterEqual(
-                    self,
-                    len(res_dict['entries']),
-                    test_case['playlist_mincount'],
-                    'Expected at least %d in playlist %s, but got only %d' % (
-                        test_case['playlist_mincount'], test_case['url'],
-                        len(res_dict['entries'])))
+                    self, num_entries, mincount,
+                    f'Expected at least {mincount} entries in playlist {test_url}, but got only {num_entries}')
             if 'playlist_count' in test_case:
+                count = test_case['playlist_count']
+                got = num_entries if num_entries <= count else 'more'
                 self.assertEqual(
-                    len(res_dict['entries']),
-                    test_case['playlist_count'],
-                    'Expected %d entries in playlist %s, but got %d.' % (
-                        test_case['playlist_count'],
-                        test_case['url'],
-                        len(res_dict['entries']),
-                    ))
+                    num_entries, count,
+                    f'Expected exactly {count} entries in playlist {test_url}, but got {got}')
+            if 'playlist_maxcount' in test_case:
+                maxcount = test_case['playlist_maxcount']
+                assertLessEqual(
+                    self, num_entries, maxcount,
+                    f'Expected at most {maxcount} entries in playlist {test_url}, but got more')
             if 'playlist_duration_sum' in test_case:
                 got_duration = sum(e['duration'] for e in res_dict['entries'])
                 self.assertEqual(
@@ -244,9 +240,8 @@ def try_rm_tcs_files(tcs=None):
                         got_fsize = os.path.getsize(tc_filename)
                         assertGreaterEqual(
                             self, got_fsize, expected_minsize,
-                            'Expected %s to be at least %s, but it\'s only %s ' %
-                            (tc_filename, format_bytes(expected_minsize),
-                                format_bytes(got_fsize)))
+                            f'Expected {tc_filename} to be at least {format_bytes(expected_minsize)}, '
+                            f'but it\'s only {format_bytes(got_fsize)} ')
                     if 'md5' in tc:
                         md5_for_file = _file_md5(tc_filename)
                         self.assertEqual(tc['md5'], md5_for_file)
@@ -255,7 +250,7 @@ def try_rm_tcs_files(tcs=None):
                 info_json_fn = os.path.splitext(tc_filename)[0] + '.info.json'
                 self.assertTrue(
                     os.path.exists(info_json_fn),
-                    'Missing info file %s' % info_json_fn)
+                    f'Missing info file {info_json_fn}')
                 with open(info_json_fn, encoding='utf-8') as infof:
                     info_dict = json.load(infof)
                 expect_info_dict(self, info_dict, tc.get('info_dict', {}))

test/test_downloader_http.py

@@ -15,7 +15,6 @@
 from test.helper import http_server_port, try_rm
 from yt_dlp import YoutubeDL
 from yt_dlp.downloader.http import HttpFD
-from yt_dlp.utils import encodeFilename
 from yt_dlp.utils._utils import _YDLLogger as FakeLogger
 
 TEST_DIR = os.path.dirname(os.path.abspath(__file__))
@@ -38,9 +37,9 @@ def send_content_range(self, total=None):
                 end = int(mobj.group(2))
         valid_range = start is not None and end is not None
         if valid_range:
-            content_range = 'bytes %d-%d' % (start, end)
+            content_range = f'bytes {start}-{end}'
             if total:
-                content_range += '/%d' % total
+                content_range += f'/{total}'
             self.send_header('Content-Range', content_range)
         return (end - start + 1) if valid_range else total
 
@@ -82,12 +81,12 @@ def download(self, params, ep):
         ydl = YoutubeDL(params)
         downloader = HttpFD(ydl, params)
         filename = 'testfile.mp4'
-        try_rm(encodeFilename(filename))
+        try_rm(filename)
         self.assertTrue(downloader.real_download(filename, {
-            'url': 'http://127.0.0.1:%d/%s' % (self.port, ep),
+            'url': f'http://127.0.0.1:{self.port}/{ep}',
         }), ep)
-        self.assertEqual(os.path.getsize(encodeFilename(filename)), TEST_SIZE, ep)
-        try_rm(encodeFilename(filename))
+        self.assertEqual(os.path.getsize(filename), TEST_SIZE, ep)
+        try_rm(filename)
 
     def download_all(self, params):
         for ep in ('regular', 'no-content-length', 'no-range', 'no-range-no-content-length'):

test/test_http_proxy.py

@@ -105,7 +105,7 @@ def __init__(self, socket, ssl_context, server_hostname=None, suppress_ragged_eo
                 self.incoming,
                 self.outgoing,
                 server_hostname=server_hostname,
-                server_side=server_side
+                server_side=server_side,
             )
             self._ssl_io_loop(self.sslobj.do_handshake)
 
@@ -331,10 +331,6 @@ def test_http_connect_auth(self, handler, ctx):
                 assert proxy_info['proxy'] == server_address
                 assert 'Proxy-Authorization' in proxy_info['headers']
 
-    @pytest.mark.skip_handler(
-        'Requests',
-        'bug in urllib3 causes unclosed socket: https://github.com/urllib3/urllib3/issues/3374'
-    )
     def test_http_connect_bad_auth(self, handler, ctx):
         with ctx.http_server(HTTPConnectProxyHandler, username='test', password='test') as server_address:
             with handler(verify=False, proxies={ctx.REQUEST_PROTO: f'http://test:bad@{server_address}'}) as rh:

test/test_iqiyi_sdk_interpreter.py

@@ -29,11 +29,11 @@ def error(self, msg):
 @is_download_test
 class TestIqiyiSDKInterpreter(unittest.TestCase):
     def test_iqiyi_sdk_interpreter(self):
-        '''
+        """
         Test the functionality of IqiyiSDKInterpreter by trying to log in
 
         If `sign` is incorrect, /validate call throws an HTTP 556 error
-        '''
+        """
         logger = WarningLogger()
         ie = IqiyiIE(FakeYDL({'logger': logger}))
         ie._perform_login('foo', 'bar')

test/test_jsinterp.py

@@ -9,7 +9,7 @@
 
 import math
 
-from yt_dlp.jsinterp import JS_Undefined, JSInterpreter
+from yt_dlp.jsinterp import JS_Undefined, JSInterpreter, js_number_to_string
 
 
 class NaN:
@@ -92,6 +92,17 @@ def test_operators(self):
         self._test('function f(){return 0 && 1 || 2;}', 2)
         self._test('function f(){return 0 ?? 42;}', 0)
         self._test('function f(){return "life, the universe and everything" < 42;}', False)
+        self._test('function f(){return 0  - 7 * - 6;}', 42)
+        self._test('function f(){return true << "5";}', 32)
+        self._test('function f(){return true << true;}', 2)
+        self._test('function f(){return "19" & "21.9";}', 17)
+        self._test('function f(){return "19" & false;}', 0)
+        self._test('function f(){return "11.0" >> "2.1";}', 2)
+        self._test('function f(){return 5 ^ 9;}', 12)
+        self._test('function f(){return 0.0 << NaN}', 0)
+        self._test('function f(){return null << undefined}', 0)
+        # TODO: Does not work due to number too large
+        # self._test('function f(){return 21 << 4294967297}', 42)
 
     def test_array_access(self):
         self._test('function f(){var x = [1,2,3]; x[0] = 4; x[0] = 5; x[2.0] = 7; return x;}', [5, 2, 7])
@@ -107,6 +118,7 @@ def test_assignments(self):
         self._test('function f(){var x = 20; x = 30 + 1; return x;}', 31)
         self._test('function f(){var x = 20; x += 30 + 1; return x;}', 51)
         self._test('function f(){var x = 20; x -= 30 + 1; return x;}', -11)
+        self._test('function f(){var x = 2; var y = ["a", "b"]; y[x%y["length"]]="z"; return y}', ['z', 'b'])
 
     @unittest.skip('Not implemented')
     def test_comments(self):
@@ -373,7 +385,161 @@ def test_negative(self):
     @unittest.skip('Not implemented')
     def test_packed(self):
         jsi = JSInterpreter('''function f(p,a,c,k,e,d){while(c--)if(k[c])p=p.replace(new RegExp('\\b'+c.toString(a)+'\\b','g'),k[c]);return p}''')
-        self.assertEqual(jsi.call_function('f', '''h 7=g("1j");7.7h({7g:[{33:"w://7f-7e-7d-7c.v.7b/7a/79/78/77/76.74?t=73&s=2s&e=72&f=2t&71=70.0.0.1&6z=6y&6x=6w"}],6v:"w://32.v.u/6u.31",16:"r%",15:"r%",6t:"6s",6r:"",6q:"l",6p:"l",6o:"6n",6m:\'6l\',6k:"6j",9:[{33:"/2u?b=6i&n=50&6h=w://32.v.u/6g.31",6f:"6e"}],1y:{6d:1,6c:\'#6b\',6a:\'#69\',68:"67",66:30,65:r,},"64":{63:"%62 2m%m%61%5z%5y%5x.u%5w%5v%5u.2y%22 2k%m%1o%22 5t%m%1o%22 5s%m%1o%22 2j%m%5r%22 16%m%5q%22 15%m%5p%22 5o%2z%5n%5m%2z",5l:"w://v.u/d/1k/5k.2y",5j:[]},\'5i\':{"5h":"5g"},5f:"5e",5d:"w://v.u",5c:{},5b:l,1x:[0.25,0.50,0.75,1,1.25,1.5,2]});h 1m,1n,5a;h 59=0,58=0;h 7=g("1j");h 2x=0,57=0,56=0;$.55({54:{\'53-52\':\'2i-51\'}});7.j(\'4z\',6(x){c(5>0&&x.1l>=5&&1n!=1){1n=1;$(\'q.4y\').4x(\'4w\')}});7.j(\'13\',6(x){2x=x.1l});7.j(\'2g\',6(x){2w(x)});7.j(\'4v\',6(){$(\'q.2v\').4u()});6 2w(x){$(\'q.2v\').4t();c(1m)19;1m=1;17=0;c(4s.4r===l){17=1}$.4q(\'/2u?b=4p&2l=1k&4o=2t-4n-4m-2s-4l&4k=&4j=&4i=&17=\'+17,6(2r){$(\'#4h\').4g(2r)});$(\'.3-8-4f-4e:4d("4c")\').2h(6(e){2q();g().4b(0);g().4a(l)});6 2q(){h $14=$("<q />").2p({1l:"49",16:"r%",15:"r%",48:0,2n:0,2o:47,46:"45(10%, 10%, 10%, 0.4)","44-43":"42"});$("<41 />").2p({16:"60%",15:"60%",2o:40,"3z-2n":"3y"}).3x({\'2m\':\'/?b=3w&2l=1k\',\'2k\':\'0\',\'2j\':\'2i\'}).2f($14);$14.2h(6(){$(3v).3u();g().2g()});$14.2f($(\'#1j\'))}g().13(0);}6 3t(){h 9=7.1b(2e);2d.2c(9);c(9.n>1){1r(i=0;i<9.n;i++){c(9[i].1a==2e){2d.2c(\'!!=\'+i);7.1p(i)}}}}7.j(\'3s\',6(){g().1h("/2a/3r.29","3q 10 28",6(){g().13(g().27()+10)},"2b");$("q[26=2b]").23().21(\'.3-20-1z\');g().1h("/2a/3p.29","3o 10 28",6(){h 12=g().27()-10;c(12<0)12=0;g().13(12)},"24");$("q[26=24]").23().21(\'.3-20-1z\');});6 1i(){}7.j(\'3n\',6(){1i()});7.j(\'3m\',6(){1i()});7.j("k",6(y){h 9=7.1b();c(9.n<2)19;$(\'.3-8-3l-3k\').3j(6(){$(\'#3-8-a-k\').1e(\'3-8-a-z\');$(\'.3-a-k\').p(\'o-1f\',\'11\')});7.1h("/3i/3h.3g","3f 3e",6(){$(\'.3-1w\').3d(\'3-8-1v\');$(\'.3-8-1y, .3-8-1x\').p(\'o-1g\',\'11\');c($(\'.3-1w\').3c(\'3-8-1v\')){$(\'.3-a-k\').p(\'o-1g\',\'l\');$(\'.3-a-k\').p(\'o-1f\',\'l\');$(\'.3-8-a\').1e(\'3-8-a-z\');$(\'.3-8-a:1u\').3b(\'3-8-a-z\')}3a{$(\'.3-a-k\').p(\'o-1g\',\'11\');$(\'.3-a-k\').p(\'o-1f\',\'11\');$(\'.3-8-a:1u\').1e(\'3-8-a-z\')}},"39");7.j("38",6(y){1d.37(\'1c\',y.9[y.36].1a)});c(1d.1t(\'1c\')){35("1s(1d.1t(\'1c\'));",34)}});h 18;6 1s(1q){h 9=7.1b();c(9.n>1){1r(i=0;i<9.n;i++){c(9[i].1a==1q){c(i==18){19}18=i;7.1p(i)}}}}',36,270,'|||jw|||function|player|settings|tracks|submenu||if||||jwplayer|var||on|audioTracks|true|3D|length|aria|attr|div|100|||sx|filemoon|https||event|active||false|tt|seek|dd|height|width|adb|current_audio|return|name|getAudioTracks|default_audio|localStorage|removeClass|expanded|checked|addButton|callMeMaybe|vplayer|0fxcyc2ajhp1|position|vvplay|vvad|220|setCurrentAudioTrack|audio_name|for|audio_set|getItem|last|open|controls|playbackRates|captions|rewind|icon|insertAfter||detach|ff00||button|getPosition|sec|png|player8|ff11|log|console|track_name|appendTo|play|click|no|scrolling|frameborder|file_code|src|top|zIndex|css|showCCform|data|1662367683|383371|dl|video_ad|doPlay|prevt|mp4|3E||jpg|thumbs|file|300|setTimeout|currentTrack|setItem|audioTrackChanged|dualSound|else|addClass|hasClass|toggleClass|Track|Audio|svg|dualy|images|mousedown|buttons|topbar|playAttemptFailed|beforePlay|Rewind|fr|Forward|ff|ready|set_audio_track|remove|this|upload_srt|prop|50px|margin|1000001|iframe|center|align|text|rgba|background|1000000|left|absolute|pause|setCurrentCaptions|Upload|contains|item|content|html|fviews|referer|prem|embed|3e57249ef633e0d03bf76ceb8d8a4b65|216|83|hash|view|get|TokenZir|window|hide|show|complete|slow|fadeIn|video_ad_fadein|time||cache|Cache|Content|headers|ajaxSetup|v2done|tott|vastdone2|vastdone1|vvbefore|playbackRateControls|cast|aboutlink|FileMoon|abouttext|UHD|1870|qualityLabels|sites|GNOME_POWER|link|2Fiframe|3C|allowfullscreen|22360|22640|22no|marginheight|marginwidth|2FGNOME_POWER|2F0fxcyc2ajhp1|2Fe|2Ffilemoon|2F|3A||22https|3Ciframe|code|sharing|fontOpacity|backgroundOpacity|Tahoma|fontFamily|303030|backgroundColor|FFFFFF|color|userFontScale|thumbnails|kind|0fxcyc2ajhp10000|url|get_slides|start|startparam|none|preload|html5|primary|hlshtml|androidhls|duration|uniform|stretching|0fxcyc2ajhp1_xt|image|2048|sp|6871|asn|127|srv|43200|_g3XlBcu2lmD9oDexD2NLWSmah2Nu3XcDrl93m9PwXY|m3u8||master|0fxcyc2ajhp1_x|00076|01|hls2|to|s01|delivery|storage|moon|sources|setup'''.split('|')))
+        self.assertEqual(jsi.call_function('f', '''h 7=g("1j");7.7h({7g:[{33:"w://7f-7e-7d-7c.v.7b/7a/79/78/77/76.74?t=73&s=2s&e=72&f=2t&71=70.0.0.1&6z=6y&6x=6w"}],6v:"w://32.v.u/6u.31",16:"r%",15:"r%",6t:"6s",6r:"",6q:"l",6p:"l",6o:"6n",6m:\'6l\',6k:"6j",9:[{33:"/2u?b=6i&n=50&6h=w://32.v.u/6g.31",6f:"6e"}],1y:{6d:1,6c:\'#6b\',6a:\'#69\',68:"67",66:30,65:r,},"64":{63:"%62 2m%m%61%5z%5y%5x.u%5w%5v%5u.2y%22 2k%m%1o%22 5t%m%1o%22 5s%m%1o%22 2j%m%5r%22 16%m%5q%22 15%m%5p%22 5o%2z%5n%5m%2z",5l:"w://v.u/d/1k/5k.2y",5j:[]},\'5i\':{"5h":"5g"},5f:"5e",5d:"w://v.u",5c:{},5b:l,1x:[0.25,0.50,0.75,1,1.25,1.5,2]});h 1m,1n,5a;h 59=0,58=0;h 7=g("1j");h 2x=0,57=0,56=0;$.55({54:{\'53-52\':\'2i-51\'}});7.j(\'4z\',6(x){c(5>0&&x.1l>=5&&1n!=1){1n=1;$(\'q.4y\').4x(\'4w\')}});7.j(\'13\',6(x){2x=x.1l});7.j(\'2g\',6(x){2w(x)});7.j(\'4v\',6(){$(\'q.2v\').4u()});6 2w(x){$(\'q.2v\').4t();c(1m)19;1m=1;17=0;c(4s.4r===l){17=1}$.4q(\'/2u?b=4p&2l=1k&4o=2t-4n-4m-2s-4l&4k=&4j=&4i=&17=\'+17,6(2r){$(\'#4h\').4g(2r)});$(\'.3-8-4f-4e:4d("4c")\').2h(6(e){2q();g().4b(0);g().4a(l)});6 2q(){h $14=$("<q />").2p({1l:"49",16:"r%",15:"r%",48:0,2n:0,2o:47,46:"45(10%, 10%, 10%, 0.4)","44-43":"42"});$("<41 />").2p({16:"60%",15:"60%",2o:40,"3z-2n":"3y"}).3x({\'2m\':\'/?b=3w&2l=1k\',\'2k\':\'0\',\'2j\':\'2i\'}).2f($14);$14.2h(6(){$(3v).3u();g().2g()});$14.2f($(\'#1j\'))}g().13(0);}6 3t(){h 9=7.1b(2e);2d.2c(9);c(9.n>1){1r(i=0;i<9.n;i++){c(9[i].1a==2e){2d.2c(\'!!=\'+i);7.1p(i)}}}}7.j(\'3s\',6(){g().1h("/2a/3r.29","3q 10 28",6(){g().13(g().27()+10)},"2b");$("q[26=2b]").23().21(\'.3-20-1z\');g().1h("/2a/3p.29","3o 10 28",6(){h 12=g().27()-10;c(12<0)12=0;g().13(12)},"24");$("q[26=24]").23().21(\'.3-20-1z\');});6 1i(){}7.j(\'3n\',6(){1i()});7.j(\'3m\',6(){1i()});7.j("k",6(y){h 9=7.1b();c(9.n<2)19;$(\'.3-8-3l-3k\').3j(6(){$(\'#3-8-a-k\').1e(\'3-8-a-z\');$(\'.3-a-k\').p(\'o-1f\',\'11\')});7.1h("/3i/3h.3g","3f 3e",6(){$(\'.3-1w\').3d(\'3-8-1v\');$(\'.3-8-1y, .3-8-1x\').p(\'o-1g\',\'11\');c($(\'.3-1w\').3c(\'3-8-1v\')){$(\'.3-a-k\').p(\'o-1g\',\'l\');$(\'.3-a-k\').p(\'o-1f\',\'l\');$(\'.3-8-a\').1e(\'3-8-a-z\');$(\'.3-8-a:1u\').3b(\'3-8-a-z\')}3a{$(\'.3-a-k\').p(\'o-1g\',\'11\');$(\'.3-a-k\').p(\'o-1f\',\'11\');$(\'.3-8-a:1u\').1e(\'3-8-a-z\')}},"39");7.j("38",6(y){1d.37(\'1c\',y.9[y.36].1a)});c(1d.1t(\'1c\')){35("1s(1d.1t(\'1c\'));",34)}});h 18;6 1s(1q){h 9=7.1b();c(9.n>1){1r(i=0;i<9.n;i++){c(9[i].1a==1q){c(i==18){19}18=i;7.1p(i)}}}}',36,270,'|||jw|||function|player|settings|tracks|submenu||if||||jwplayer|var||on|audioTracks|true|3D|length|aria|attr|div|100|||sx|filemoon|https||event|active||false|tt|seek|dd|height|width|adb|current_audio|return|name|getAudioTracks|default_audio|localStorage|removeClass|expanded|checked|addButton|callMeMaybe|vplayer|0fxcyc2ajhp1|position|vvplay|vvad|220|setCurrentAudioTrack|audio_name|for|audio_set|getItem|last|open|controls|playbackRates|captions|rewind|icon|insertAfter||detach|ff00||button|getPosition|sec|png|player8|ff11|log|console|track_name|appendTo|play|click|no|scrolling|frameborder|file_code|src|top|zIndex|css|showCCform|data|1662367683|383371|dl|video_ad|doPlay|prevt|mp4|3E||jpg|thumbs|file|300|setTimeout|currentTrack|setItem|audioTrackChanged|dualSound|else|addClass|hasClass|toggleClass|Track|Audio|svg|dualy|images|mousedown|buttons|topbar|playAttemptFailed|beforePlay|Rewind|fr|Forward|ff|ready|set_audio_track|remove|this|upload_srt|prop|50px|margin|1000001|iframe|center|align|text|rgba|background|1000000|left|absolute|pause|setCurrentCaptions|Upload|contains|item|content|html|fviews|referer|prem|embed|3e57249ef633e0d03bf76ceb8d8a4b65|216|83|hash|view|get|TokenZir|window|hide|show|complete|slow|fadeIn|video_ad_fadein|time||cache|Cache|Content|headers|ajaxSetup|v2done|tott|vastdone2|vastdone1|vvbefore|playbackRateControls|cast|aboutlink|FileMoon|abouttext|UHD|1870|qualityLabels|sites|GNOME_POWER|link|2Fiframe|3C|allowfullscreen|22360|22640|22no|marginheight|marginwidth|2FGNOME_POWER|2F0fxcyc2ajhp1|2Fe|2Ffilemoon|2F|3A||22https|3Ciframe|code|sharing|fontOpacity|backgroundOpacity|Tahoma|fontFamily|303030|backgroundColor|FFFFFF|color|userFontScale|thumbnails|kind|0fxcyc2ajhp10000|url|get_slides|start|startparam|none|preload|html5|primary|hlshtml|androidhls|duration|uniform|stretching|0fxcyc2ajhp1_xt|image|2048|sp|6871|asn|127|srv|43200|_g3XlBcu2lmD9oDexD2NLWSmah2Nu3XcDrl93m9PwXY|m3u8||master|0fxcyc2ajhp1_x|00076|01|hls2|to|s01|delivery|storage|moon|sources|setup'''.split('|')))  # noqa: SIM905
+
+    def test_join(self):
+        test_input = list('test')
+        tests = [
+            'function f(a, b){return a.join(b)}',
+            'function f(a, b){return Array.prototype.join.call(a, b)}',
+            'function f(a, b){return Array.prototype.join.apply(a, [b])}',
+        ]
+        for test in tests:
+            jsi = JSInterpreter(test)
+            self._test(jsi, 'test', args=[test_input, ''])
+            self._test(jsi, 't-e-s-t', args=[test_input, '-'])
+            self._test(jsi, '', args=[[], '-'])
+
+    def test_split(self):
+        test_result = list('test')
+        tests = [
+            'function f(a, b){return a.split(b)}',
+            'function f(a, b){return a["split"](b)}',
+            'function f(a, b){let x = ["split"]; return a[x[0]](b)}',
+            'function f(a, b){return String.prototype.split.call(a, b)}',
+            'function f(a, b){return String.prototype.split.apply(a, [b])}',
+        ]
+        for test in tests:
+            jsi = JSInterpreter(test)
+            self._test(jsi, test_result, args=['test', ''])
+            self._test(jsi, test_result, args=['t-e-s-t', '-'])
+            self._test(jsi, [''], args=['', '-'])
+            self._test(jsi, [], args=['', ''])
+
+    def test_slice(self):
+        self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice()}', [0, 1, 2, 3, 4, 5, 6, 7, 8])
+        self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(0)}', [0, 1, 2, 3, 4, 5, 6, 7, 8])
+        self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(5)}', [5, 6, 7, 8])
+        self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(99)}', [])
+        self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(-2)}', [7, 8])
+        self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(-99)}', [0, 1, 2, 3, 4, 5, 6, 7, 8])
+        self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(0, 0)}', [])
+        self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(1, 0)}', [])
+        self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(0, 1)}', [0])
+        self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(3, 6)}', [3, 4, 5])
+        self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(1, -1)}', [1, 2, 3, 4, 5, 6, 7])
+        self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(-1, 1)}', [])
+        self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice(-3, -1)}', [6, 7])
+        self._test('function f(){return "012345678".slice()}', '012345678')
+        self._test('function f(){return "012345678".slice(0)}', '012345678')
+        self._test('function f(){return "012345678".slice(5)}', '5678')
+        self._test('function f(){return "012345678".slice(99)}', '')
+        self._test('function f(){return "012345678".slice(-2)}', '78')
+        self._test('function f(){return "012345678".slice(-99)}', '012345678')
+        self._test('function f(){return "012345678".slice(0, 0)}', '')
+        self._test('function f(){return "012345678".slice(1, 0)}', '')
+        self._test('function f(){return "012345678".slice(0, 1)}', '0')
+        self._test('function f(){return "012345678".slice(3, 6)}', '345')
+        self._test('function f(){return "012345678".slice(1, -1)}', '1234567')
+        self._test('function f(){return "012345678".slice(-1, 1)}', '')
+        self._test('function f(){return "012345678".slice(-3, -1)}', '67')
+
+    def test_splice(self):
+        self._test('function f(){var T = ["0", "1", "2"]; T["splice"](2, 1, "0")[0]; return T }', ['0', '1', '0'])
+
+    def test_js_number_to_string(self):
+        for test, radix, expected in [
+            (0, None, '0'),
+            (-0, None, '0'),
+            (0.0, None, '0'),
+            (-0.0, None, '0'),
+            (math.nan, None, 'NaN'),
+            (-math.nan, None, 'NaN'),
+            (math.inf, None, 'Infinity'),
+            (-math.inf, None, '-Infinity'),
+            (10 ** 21.5, 8, '526665530627250154000000'),
+            (6, 2, '110'),
+            (254, 16, 'fe'),
+            (-10, 2, '-1010'),
+            (-0xff, 2, '-11111111'),
+            (0.1 + 0.2, 16, '0.4cccccccccccd'),
+            (1234.1234, 10, '1234.1234'),
+            # (1000000000000000128, 10, '1000000000000000100')
+        ]:
+            assert js_number_to_string(test, radix) == expected
+
+    def test_extract_function(self):
+        jsi = JSInterpreter('function a(b) { return b + 1; }')
+        func = jsi.extract_function('a')
+        self.assertEqual(func([2]), 3)
+
+    def test_extract_function_with_global_stack(self):
+        jsi = JSInterpreter('function c(d) { return d + e + f + g; }')
+        func = jsi.extract_function('c', {'e': 10}, {'f': 100, 'g': 1000})
+        self.assertEqual(func([1]), 1111)
+
+    def test_extract_object(self):
+        jsi = JSInterpreter('var a={};a.xy={};var xy;var zxy={};xy={z:function(){return "abc"}};')
+        self.assertTrue('z' in jsi.extract_object('xy', None))
+
+    def test_increment_decrement(self):
+        self._test('function f() { var x = 1; return ++x; }', 2)
+        self._test('function f() { var x = 1; return x++; }', 1)
+        self._test('function f() { var x = 1; x--; return x }', 0)
+        self._test('function f() { var y; var x = 1; x++, --x, x--, x--, y="z", "abc", x++; return --x }', -1)
+        self._test('function f() { var a = "test--"; return a; }', 'test--')
+        self._test('function f() { var b = 1; var a = "b--"; return a; }', 'b--')
+
+    def test_nested_function_scoping(self):
+        self._test(R'''
+            function f() {
+                var g = function() {
+                    var P = 2;
+                    return P;
+                };
+                var P = 1;
+                g();
+                return P;
+            }
+        ''', 1)
+        self._test(R'''
+            function f() {
+                var x = function() {
+                    for (var w = 1, M = []; w < 2; w++) switch (w) {
+                        case 1:
+                            M.push("a");
+                        case 2:
+                            M.push("b");
+                    }
+                    return M
+                };
+                var w = "c";
+                var M = "d";
+                var y = x();
+                y.push(w);
+                y.push(M);
+                return y;
+            }
+        ''', ['a', 'b', 'c', 'd'])
+        self._test(R'''
+            function f() {
+                var P, Q;
+                var z = 100;
+                var g = function() {
+                    var P, Q; P = 2; Q = 15;
+                    z = 0;
+                    return P+Q;
+                };
+                P = 1; Q = 10;
+                var x = g(), y = 3;
+                return P+Q+x+y+z;
+            }
+        ''', 31)
+
+    def test_undefined_varnames(self):
+        jsi = JSInterpreter('function f(){ var a; return [a, b]; }')
+        self._test(jsi, [JS_Undefined, JS_Undefined])
+        self.assertEqual(jsi._undefined_varnames, {'b'})
 
 
 if __name__ == '__main__':

test/test_netrc.py

@@ -21,7 +21,7 @@ def test_netrc_present(self):
                 continue
             self.assertTrue(
                 ie._NETRC_MACHINE,
-                'Extractor %s supports login, but is missing a _NETRC_MACHINE property' % ie.IE_NAME)
+                f'Extractor {ie.IE_NAME} supports login, but is missing a _NETRC_MACHINE property')
 
 
 if __name__ == '__main__':

test/test_networking.py

@@ -22,7 +22,6 @@
 import tempfile
 import threading
 import time
-import urllib.error
 import urllib.request
 import warnings
 import zlib
@@ -39,6 +38,7 @@
 from yt_dlp.dependencies import brotli, curl_cffi, requests, urllib3
 from yt_dlp.networking import (
     HEADRequest,
+    PATCHRequest,
     PUTRequest,
     Request,
     RequestDirector,
@@ -222,10 +222,7 @@ def do_GET(self):
                 if encoding == 'br' and brotli:
                     payload = brotli.compress(payload)
                 elif encoding == 'gzip':
-                    buf = io.BytesIO()
-                    with gzip.GzipFile(fileobj=buf, mode='wb') as f:
-                        f.write(payload)
-                    payload = buf.getvalue()
+                    payload = gzip.compress(payload, mtime=0)
                 elif encoding == 'deflate':
                     payload = zlib.compress(payload)
                 elif encoding == 'unsupported':
@@ -265,6 +262,11 @@ def do_GET(self):
             self.end_headers()
             self.wfile.write(payload)
             self.finish()
+        elif self.path == '/get_cookie':
+            self.send_response(200)
+            self.send_header('Set-Cookie', 'test=ytdlp; path=/')
+            self.end_headers()
+            self.finish()
         else:
             self._status(404)
 
@@ -338,6 +340,52 @@ def test_ssl_error(self, handler):
                 validate_and_send(rh, Request(f'https://127.0.0.1:{https_port}/headers'))
             assert not issubclass(exc_info.type, CertificateVerifyError)
 
+    @pytest.mark.skip_handler('CurlCFFI', 'legacy_ssl ignored by CurlCFFI')
+    def test_legacy_ssl_extension(self, handler):
+        # HTTPS server with old ciphers
+        # XXX: is there a better way to test this than to create a new server?
+        https_httpd = http.server.ThreadingHTTPServer(
+            ('127.0.0.1', 0), HTTPTestRequestHandler)
+        sslctx = ssl.SSLContext(ssl.PROTOCOL_TLS_SERVER)
+        sslctx.maximum_version = ssl.TLSVersion.TLSv1_2
+        sslctx.set_ciphers('SHA1:AESCCM:aDSS:eNULL:aNULL')
+        sslctx.load_cert_chain(os.path.join(TEST_DIR, 'testcert.pem'), None)
+        https_httpd.socket = sslctx.wrap_socket(https_httpd.socket, server_side=True)
+        https_port = http_server_port(https_httpd)
+        https_server_thread = threading.Thread(target=https_httpd.serve_forever)
+        https_server_thread.daemon = True
+        https_server_thread.start()
+
+        with handler(verify=False) as rh:
+            res = validate_and_send(rh, Request(f'https://127.0.0.1:{https_port}/headers', extensions={'legacy_ssl': True}))
+            assert res.status == 200
+            res.close()
+
+            # Ensure only applies to request extension
+            with pytest.raises(SSLError):
+                validate_and_send(rh, Request(f'https://127.0.0.1:{https_port}/headers'))
+
+    @pytest.mark.skip_handler('CurlCFFI', 'legacy_ssl ignored by CurlCFFI')
+    def test_legacy_ssl_support(self, handler):
+        # HTTPS server with old ciphers
+        # XXX: is there a better way to test this than to create a new server?
+        https_httpd = http.server.ThreadingHTTPServer(
+            ('127.0.0.1', 0), HTTPTestRequestHandler)
+        sslctx = ssl.SSLContext(ssl.PROTOCOL_TLS_SERVER)
+        sslctx.maximum_version = ssl.TLSVersion.TLSv1_2
+        sslctx.set_ciphers('SHA1:AESCCM:aDSS:eNULL:aNULL')
+        sslctx.load_cert_chain(os.path.join(TEST_DIR, 'testcert.pem'), None)
+        https_httpd.socket = sslctx.wrap_socket(https_httpd.socket, server_side=True)
+        https_port = http_server_port(https_httpd)
+        https_server_thread = threading.Thread(target=https_httpd.serve_forever)
+        https_server_thread.daemon = True
+        https_server_thread.start()
+
+        with handler(verify=False, legacy_ssl_support=True) as rh:
+            res = validate_and_send(rh, Request(f'https://127.0.0.1:{https_port}/headers'))
+            assert res.status == 200
+            res.close()
+
     def test_percent_encode(self, handler):
         with handler() as rh:
             # Unicode characters should be encoded with uppercase percent-encoding
@@ -375,10 +423,10 @@ def test_raise_http_error(self, handler):
         with handler() as rh:
             for bad_status in (400, 500, 599, 302):
                 with pytest.raises(HTTPError):
-                    validate_and_send(rh, Request('http://127.0.0.1:%d/gen_%d' % (self.http_port, bad_status)))
+                    validate_and_send(rh, Request(f'http://127.0.0.1:{self.http_port}/gen_{bad_status}'))
 
             # Should not raise an error
-            validate_and_send(rh, Request('http://127.0.0.1:%d/gen_200' % self.http_port)).close()
+            validate_and_send(rh, Request(f'http://127.0.0.1:{self.http_port}/gen_200')).close()
 
     def test_response_url(self, handler):
         with handler() as rh:
@@ -472,7 +520,7 @@ def test_redirect_loop(self, handler):
     def test_incompleteread(self, handler):
         with handler(timeout=2) as rh:
             with pytest.raises(IncompleteRead, match='13 bytes read, 234221 more expected'):
-                validate_and_send(rh, Request('http://127.0.0.1:%d/incompleteread' % self.http_port)).read()
+                validate_and_send(rh, Request(f'http://127.0.0.1:{self.http_port}/incompleteread')).read()
 
     def test_cookies(self, handler):
         cookiejar = YoutubeDLCookieJar()
@@ -490,6 +538,24 @@ def test_cookies(self, handler):
                 rh, Request(f'http://127.0.0.1:{self.http_port}/headers', extensions={'cookiejar': cookiejar})).read()
             assert b'cookie: test=ytdlp' in data.lower()
 
+    def test_cookie_sync_only_cookiejar(self, handler):
+        # Ensure that cookies are ONLY being handled by the cookiejar
+        with handler() as rh:
+            validate_and_send(rh, Request(f'http://127.0.0.1:{self.http_port}/get_cookie', extensions={'cookiejar': YoutubeDLCookieJar()}))
+            data = validate_and_send(rh, Request(f'http://127.0.0.1:{self.http_port}/headers', extensions={'cookiejar': YoutubeDLCookieJar()})).read()
+            assert b'cookie: test=ytdlp' not in data.lower()
+
+    def test_cookie_sync_delete_cookie(self, handler):
+        # Ensure that cookies are ONLY being handled by the cookiejar
+        cookiejar = YoutubeDLCookieJar()
+        with handler(cookiejar=cookiejar) as rh:
+            validate_and_send(rh, Request(f'http://127.0.0.1:{self.http_port}/get_cookie'))
+            data = validate_and_send(rh, Request(f'http://127.0.0.1:{self.http_port}/headers')).read()
+            assert b'cookie: test=ytdlp' in data.lower()
+            cookiejar.clear_session_cookies()
+            data = validate_and_send(rh, Request(f'http://127.0.0.1:{self.http_port}/headers')).read()
+            assert b'cookie: test=ytdlp' not in data.lower()
+
     def test_headers(self, handler):
 
         with handler(headers=HTTPHeaderDict({'test1': 'test', 'test2': 'test2'})) as rh:
@@ -545,7 +611,6 @@ def test_source_address(self, handler):
                 rh, Request(f'http://127.0.0.1:{self.http_port}/source_address')).read().decode()
             assert source_address == data
 
-    # Not supported by CurlCFFI
     @pytest.mark.skip_handler('CurlCFFI', 'not supported by curl-cffi')
     def test_gzip_trailing_garbage(self, handler):
         with handler() as rh:
@@ -651,6 +716,26 @@ def test_allproxy(self, handler):
                     rh, Request(
                         f'http://127.0.0.1:{self.http_port}/headers', proxies={'all': 'http://10.255.255.255'})).close()
 
+    @pytest.mark.skip_handlers_if(lambda _, handler: handler not in ['Urllib', 'CurlCFFI'], 'handler does not support keep_header_casing')
+    def test_keep_header_casing(self, handler):
+        with handler() as rh:
+            res = validate_and_send(
+                rh, Request(
+                    f'http://127.0.0.1:{self.http_port}/headers', headers={'X-test-heaDer': 'test'}, extensions={'keep_header_casing': True})).read().decode()
+
+            assert 'X-test-heaDer: test' in res
+
+    def test_partial_read_then_full_read(self, handler):
+        with handler() as rh:
+            for encoding in ('', 'gzip', 'deflate'):
+                res = validate_and_send(rh, Request(
+                    f'http://127.0.0.1:{self.http_port}/content-encoding',
+                    headers={'ytdl-encoding': encoding}))
+                assert res.headers.get('Content-Encoding') == encoding
+                assert res.read(6) == b'<html>'
+                assert res.read(0) == b''
+                assert res.read() == b'<video src="/vid.mp4" /></html>'
+
 
 @pytest.mark.parametrize('handler', ['Urllib', 'Requests', 'CurlCFFI'], indirect=True)
 class TestClientCertificate:
@@ -740,7 +825,7 @@ class TestRequestHandlerMisc:
     @pytest.mark.parametrize('handler,logger_name', [
         ('Requests', 'urllib3'),
         ('Websockets', 'websockets.client'),
-        ('Websockets', 'websockets.server')
+        ('Websockets', 'websockets.server'),
     ], indirect=['handler'])
     def test_remove_logging_handler(self, handler, logger_name):
         # Ensure any logging handlers, which may contain a YoutubeDL instance,
@@ -753,6 +838,24 @@ def test_remove_logging_handler(self, handler, logger_name):
         rh.close()
         assert len(logging_handlers) == before_count
 
+    def test_wrap_request_errors(self):
+        class TestRequestHandler(RequestHandler):
+            def _validate(self, request):
+                if request.headers.get('x-fail'):
+                    raise UnsupportedRequest('test error')
+
+            def _send(self, request: Request):
+                raise RequestError('test error')
+
+        with TestRequestHandler(logger=FakeLogger()) as rh:
+            with pytest.raises(UnsupportedRequest, match='test error') as exc_info:
+                rh.validate(Request('http://example.com', headers={'x-fail': '1'}))
+            assert exc_info.value.handler is rh
+
+            with pytest.raises(RequestError, match='test error') as exc_info:
+                rh.send(Request('http://example.com'))
+            assert exc_info.value.handler is rh
+
 
 @pytest.mark.parametrize('handler', ['Urllib'], indirect=True)
 class TestUrllibRequestHandler(TestRequestHandlerBase):
@@ -794,7 +897,7 @@ def test_verify_cert_error_text(self, handler):
         with handler() as rh:
             with pytest.raises(
                 CertificateVerifyError,
-                match=r'\[SSL: CERTIFICATE_VERIFY_FAILED\] certificate verify failed: self.signed certificate'
+                match=r'\[SSL: CERTIFICATE_VERIFY_FAILED\] certificate verify failed: self.signed certificate',
             ):
                 validate_and_send(rh, Request(f'https://127.0.0.1:{self.https_port}/headers'))
 
@@ -804,14 +907,14 @@ def test_verify_cert_error_text(self, handler):
         (
             Request('http://127.0.0.1', method='GET\n'),
             'method can\'t contain control characters',
-            lambda v: v < (3, 7, 9) or (3, 8, 0) <= v < (3, 8, 5)
+            lambda v: v < (3, 7, 9) or (3, 8, 0) <= v < (3, 8, 5),
         ),
         # https://github.com/python/cpython/blob/987b712b4aeeece336eed24fcc87a950a756c3e2/Lib/http/client.py#L1265
         # bpo-38576: Check implemented in 3.7.8+, 3.8.3+
         (
             Request('http://127.0.0. 1', method='GET'),
             'URL can\'t contain control characters',
-            lambda v: v < (3, 7, 8) or (3, 8, 0) <= v < (3, 8, 3)
+            lambda v: v < (3, 7, 8) or (3, 8, 0) <= v < (3, 8, 3),
         ),
         # https://github.com/python/cpython/blob/987b712b4aeeece336eed24fcc87a950a756c3e2/Lib/http/client.py#L1288C31-L1288C50
         (Request('http://127.0.0.1', headers={'foo\n': 'bar'}), 'Invalid header name', None),
@@ -840,7 +943,7 @@ class TestRequestsRequestHandler(TestRequestHandlerBase):
         (lambda: requests.exceptions.InvalidHeader(), RequestError),
         # catch-all: https://github.com/psf/requests/blob/main/src/requests/adapters.py#L535
         (lambda: urllib3.exceptions.HTTPError(), TransportError),
-        (lambda: requests.exceptions.RequestException(), RequestError)
+        (lambda: requests.exceptions.RequestException(), RequestError),
         #  (lambda: requests.exceptions.TooManyRedirects(), HTTPError) - Needs a response object
     ])
     def test_request_error_mapping(self, handler, monkeypatch, raised, expected):
@@ -868,12 +971,12 @@ def request(self, *args, **kwargs):
         (
             lambda: urllib3.exceptions.ProtocolError('error', http.client.IncompleteRead(partial=b'abc', expected=4)),
             IncompleteRead,
-            '3 bytes read, 4 more expected'
+            '3 bytes read, 4 more expected',
         ),
         (
             lambda: urllib3.exceptions.ProtocolError('error', urllib3.exceptions.IncompleteRead(partial=3, expected=5)),
             IncompleteRead,
-            '3 bytes read, 5 more expected'
+            '3 bytes read, 5 more expected',
         ),
     ])
     def test_response_error_mapping(self, handler, monkeypatch, raised, expected, match):
@@ -914,7 +1017,6 @@ def mock_close(*args, **kwargs):
 class TestCurlCFFIRequestHandler(TestRequestHandlerBase):
 
     @pytest.mark.parametrize('params,extensions', [
-        ({}, {'impersonate': ImpersonateTarget('chrome')}),
         ({'impersonate': ImpersonateTarget('chrome', '110')}, {}),
         ({'impersonate': ImpersonateTarget('chrome', '99')}, {'impersonate': ImpersonateTarget('chrome', '110')}),
     ])
@@ -1125,7 +1227,7 @@ class HTTPSupportedRH(ValidationRH):
             ('https', False, {}),
         ]),
         (NoCheckRH, [('http', False, {})]),
-        (ValidationRH, [('http', UnsupportedRequest, {})])
+        (ValidationRH, [('http', UnsupportedRequest, {})]),
     ]
 
     PROXY_SCHEME_TESTS = [
@@ -1200,6 +1302,10 @@ class HTTPSupportedRH(ValidationRH):
             ({'timeout': 1}, False),
             ({'timeout': 'notatimeout'}, AssertionError),
             ({'unsupported': 'value'}, UnsupportedRequest),
+            ({'legacy_ssl': False}, False),
+            ({'legacy_ssl': True}, False),
+            ({'legacy_ssl': 'notabool'}, AssertionError),
+            ({'keep_header_casing': True}, UnsupportedRequest),
         ]),
         ('Requests', 'http', [
             ({'cookiejar': 'notacookiejar'}, AssertionError),
@@ -1207,6 +1313,12 @@ class HTTPSupportedRH(ValidationRH):
             ({'timeout': 1}, False),
             ({'timeout': 'notatimeout'}, AssertionError),
             ({'unsupported': 'value'}, UnsupportedRequest),
+            ({'legacy_ssl': False}, False),
+            ({'legacy_ssl': True}, False),
+            ({'legacy_ssl': 'notabool'}, AssertionError),
+            ({'keep_header_casing': False}, False),
+            ({'keep_header_casing': True}, False),
+            ({'keep_header_casing': 'notabool'}, AssertionError),
         ]),
         ('CurlCFFI', 'http', [
             ({'cookiejar': 'notacookiejar'}, AssertionError),
@@ -1219,7 +1331,10 @@ class HTTPSupportedRH(ValidationRH):
             ({'impersonate': ImpersonateTarget('chrome', None, None, None)}, False),
             ({'impersonate': ImpersonateTarget(None, None, None, None)}, False),
             ({'impersonate': ImpersonateTarget()}, False),
-            ({'impersonate': 'chrome'}, AssertionError)
+            ({'impersonate': 'chrome'}, AssertionError),
+            ({'legacy_ssl': False}, False),
+            ({'legacy_ssl': True}, False),
+            ({'legacy_ssl': 'notabool'}, AssertionError),
         ]),
         (NoCheckRH, 'http', [
             ({'cookiejar': 'notacookiejar'}, False),
@@ -1228,6 +1343,9 @@ class HTTPSupportedRH(ValidationRH):
         ('Websockets', 'ws', [
             ({'cookiejar': YoutubeDLCookieJar()}, False),
             ({'timeout': 2}, False),
+            ({'legacy_ssl': False}, False),
+            ({'legacy_ssl': True}, False),
+            ({'legacy_ssl': 'notabool'}, AssertionError),
         ]),
     ]
 
@@ -1235,7 +1353,7 @@ class HTTPSupportedRH(ValidationRH):
         ('Urllib', False, 'http'),
         ('Requests', False, 'http'),
         ('CurlCFFI', False, 'http'),
-        ('Websockets', False, 'ws')
+        ('Websockets', False, 'ws'),
     ], indirect=['handler'])
     def test_no_proxy(self, handler, fail, scheme):
         run_validation(handler, fail, Request(f'{scheme}://', proxies={'no': '127.0.0.1,github.com'}))
@@ -1246,7 +1364,7 @@ def test_no_proxy(self, handler, fail, scheme):
         (HTTPSupportedRH, 'http'),
         ('Requests', 'http'),
         ('CurlCFFI', 'http'),
-        ('Websockets', 'ws')
+        ('Websockets', 'ws'),
     ], indirect=['handler'])
     def test_empty_proxy(self, handler, scheme):
         run_validation(handler, False, Request(f'{scheme}://', proxies={scheme: None}))
@@ -1258,7 +1376,7 @@ def test_empty_proxy(self, handler, scheme):
         (HTTPSupportedRH, 'http'),
         ('Requests', 'http'),
         ('CurlCFFI', 'http'),
-        ('Websockets', 'ws')
+        ('Websockets', 'ws'),
     ], indirect=['handler'])
     def test_invalid_proxy_url(self, handler, scheme, proxy_url):
         run_validation(handler, UnsupportedRequest, Request(f'{scheme}://', proxies={scheme: proxy_url}))
@@ -1474,7 +1592,7 @@ def test_compat_opener(self):
     @pytest.mark.parametrize('proxy,expected', [
         ('http://127.0.0.1:8080', {'all': 'http://127.0.0.1:8080'}),
         ('', {'all': '__noproxy__'}),
-        (None, {'http': 'http://127.0.0.1:8081', 'https': 'http://127.0.0.1:8081'})  # env, set https
+        (None, {'http': 'http://127.0.0.1:8081', 'https': 'http://127.0.0.1:8081'}),  # env, set https
     ])
     def test_proxy(self, proxy, expected, monkeypatch):
         monkeypatch.setenv('HTTP_PROXY', 'http://127.0.0.1:8081')
@@ -1546,7 +1664,7 @@ def _send(self, request: Request):
         with FakeImpersonationRHYDL() as ydl:
             with pytest.raises(
                 RequestError,
-                match=r'Impersonate target "test" is not available'
+                match=r'Impersonate target "test" is not available',
             ):
                 ydl.urlopen(Request('http://', extensions={'impersonate': ImpersonateTarget('test', None, None, None)}))
 
@@ -1558,7 +1676,7 @@ def _send(self, request: Request):
                         pass
 
                     _SUPPORTED_URL_SCHEMES = ('http',)
-                    _SUPPORTED_IMPERSONATE_TARGET_MAP = {ImpersonateTarget('abc',): 'test'}
+                    _SUPPORTED_IMPERSONATE_TARGET_MAP = {ImpersonateTarget('abc'): 'test'}
                     _SUPPORTED_PROXY_SCHEMES = None
 
                 super().__init__(*args, **kwargs)
@@ -1567,14 +1685,14 @@ def _send(self, request: Request):
         with FakeHTTPRHYDL() as ydl:
             with pytest.raises(
                 RequestError,
-                match=r'Impersonate target "test" is not available'
+                match=r'Impersonate target "test" is not available',
             ):
                 ydl.urlopen(Request('http://', extensions={'impersonate': ImpersonateTarget('test', None, None, None)}))
 
     def test_raise_impersonate_error(self):
         with pytest.raises(
             YoutubeDLError,
-            match=r'Impersonate target "test" is not available'
+            match=r'Impersonate target "test" is not available',
         ):
             FakeYDL({'impersonate': ImpersonateTarget('test', None, None, None)})
 
@@ -1592,7 +1710,7 @@ def _send(self, request: Request):
         monkeypatch.setattr(FakeYDL, 'build_request_director', lambda cls, handlers, preferences=None: brh(cls, handlers=[IRH]))
 
         with FakeYDL({
-            'impersonate': ImpersonateTarget('abc', None, None, None)
+            'impersonate': ImpersonateTarget('abc', None, None, None),
         }) as ydl:
             rh = self.build_handler(ydl, IRH)
             assert rh.impersonate == ImpersonateTarget('abc', None, None, None)
@@ -1604,7 +1722,7 @@ class TestRH(ImpersonateRequestHandler):
                 def _send(self, request: Request):
                     pass
                 _SUPPORTED_URL_SCHEMES = ('http',)
-                _SUPPORTED_IMPERSONATE_TARGET_MAP = {ImpersonateTarget(target_client,): 'test'}
+                _SUPPORTED_IMPERSONATE_TARGET_MAP = {ImpersonateTarget(target_client): 'test'}
                 RH_KEY = target_client
                 RH_NAME = target_client
             handlers.append(TestRH)
@@ -1614,7 +1732,7 @@ def _send(self, request: Request):
             assert set(ydl._get_available_impersonate_targets()) == {
                 (ImpersonateTarget('xyz'), 'xyz'),
                 (ImpersonateTarget('abc'), 'abc'),
-                (ImpersonateTarget('asd'), 'asd')
+                (ImpersonateTarget('asd'), 'asd'),
             }
             assert ydl._impersonate_target_available(ImpersonateTarget('abc'))
             assert ydl._impersonate_target_available(ImpersonateTarget())
@@ -1746,6 +1864,7 @@ def test_method(self):
 
     def test_request_helpers(self):
         assert HEADRequest('http://example.com').method == 'HEAD'
+        assert PATCHRequest('http://example.com').method == 'PATCH'
         assert PUTRequest('http://example.com').method == 'PUT'
 
     def test_headers(self):
@@ -1837,7 +1956,7 @@ def test_copy(self):
             extensions={'cookiejar': CookieJar()},
             headers={'Accept-Encoding': 'br'},
             proxies={'http': 'http://127.0.0.1'},
-            data=[b'123']
+            data=[b'123'],
         )
         req_copy = req.copy()
         assert req_copy is not req
@@ -1863,7 +1982,7 @@ class AnotherRequest(Request):
         assert isinstance(req.copy(), AnotherRequest)
 
     def test_url(self):
-        req = Request(url='https://фtest.example.com/ some spaceв?ä=c',)
+        req = Request(url='https://фtest.example.com/ some spaceв?ä=c')
         assert req.url == 'https://xn--test-z6d.example.com/%20some%20space%D0%B2?%C3%A4=c'
 
         assert Request(url='//example.com').url == 'http://example.com'
@@ -1878,7 +1997,7 @@ class TestResponse:
         ('custom', 200, 'custom'),
         (None, 404, 'Not Found'),  # fallback status
         ('', 403, 'Forbidden'),
-        (None, 999, None)
+        (None, 999, None),
     ])
     def test_reason(self, reason, status, expected):
         res = Response(io.BytesIO(b''), url='test://', headers={}, status=status, reason=reason)
@@ -1933,7 +2052,7 @@ def test_target_from_str(self, target_str, expected):
 
     @pytest.mark.parametrize('target_str', [
         '-120', ':-12.0', '-12:-12', '-:-',
-        '::', 'a-c-d:', 'a-c-d:e-f-g', 'a:b:'
+        '::', 'a-c-d:', 'a-c-d:e-f-g', 'a:b:',
     ])
     def test_target_from_invalid_str(self, target_str):
         with pytest.raises(ValueError):
@@ -1949,7 +2068,7 @@ def test_target_from_invalid_str(self, target_str):
         (ImpersonateTarget('abc', '120', 'xyz', None), 'abc-120:xyz'),
         (ImpersonateTarget('abc', None, 'xyz'), 'abc:xyz'),
         (ImpersonateTarget(None, None, 'xyz', '6.5'), ':xyz-6.5'),
-        (ImpersonateTarget('abc', ), 'abc'),
+        (ImpersonateTarget('abc'), 'abc'),
         (ImpersonateTarget(None, None, None, None), ''),
     ])
     def test_str(self, target, expected):

test/test_networking_utils.py

@@ -20,7 +20,6 @@
     add_accept_encoding_header,
     get_redirect_method,
     make_socks_proxy_opts,
-    select_proxy,
     ssl_load_certs,
 )
 from yt_dlp.networking.exceptions import (
@@ -28,7 +27,7 @@
     IncompleteRead,
 )
 from yt_dlp.socks import ProxyType
-from yt_dlp.utils.networking import HTTPHeaderDict
+from yt_dlp.utils.networking import HTTPHeaderDict, select_proxy
 
 TEST_DIR = os.path.dirname(os.path.abspath(__file__))
 
@@ -39,7 +38,7 @@ def test_select_proxy(self):
         proxies = {
             'all': 'socks5://example.com',
             'http': 'http://example.com:1080',
-            'no': 'bypass.example.com,yt-dl.org'
+            'no': 'bypass.example.com,yt-dl.org',
         }
 
         assert select_proxy('https://example.com', proxies) == proxies['all']
@@ -54,7 +53,7 @@ def test_select_proxy(self):
             'port': 1080,
             'rdns': True,
             'username': None,
-            'password': None
+            'password': None,
         }),
         ('socks5://user:@example.com:5555', {
             'proxytype': ProxyType.SOCKS5,
@@ -62,7 +61,7 @@ def test_select_proxy(self):
             'port': 5555,
             'rdns': False,
             'username': 'user',
-            'password': ''
+            'password': '',
         }),
         ('socks4://u%40ser:pa%20ss@127.0.0.1:1080', {
             'proxytype': ProxyType.SOCKS4,
@@ -70,7 +69,7 @@ def test_select_proxy(self):
             'port': 1080,
             'rdns': False,
             'username': 'u@ser',
-            'password': 'pa ss'
+            'password': 'pa ss',
         }),
         ('socks4a://:pa%20ss@127.0.0.1', {
             'proxytype': ProxyType.SOCKS4A,
@@ -78,8 +77,8 @@ def test_select_proxy(self):
             'port': 1080,
             'rdns': True,
             'username': '',
-            'password': 'pa ss'
-        })
+            'password': 'pa ss',
+        }),
     ])
     def test_make_socks_proxy_opts(self, socks_proxy, expected):
         assert make_socks_proxy_opts(socks_proxy) == expected

test/test_overwrites.py

@@ -27,7 +27,7 @@ def test_default_overwrites(self):
             [
                 sys.executable, 'yt_dlp/__main__.py',
                 '-o', 'test.webm',
-                'https://www.youtube.com/watch?v=jNQXAC9IVRw'
+                'https://www.youtube.com/watch?v=jNQXAC9IVRw',
             ], cwd=root_dir, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
         sout, serr = outp.communicate()
         self.assertTrue(b'has already been downloaded' in sout)
@@ -39,7 +39,7 @@ def test_yes_overwrites(self):
             [
                 sys.executable, 'yt_dlp/__main__.py', '--yes-overwrites',
                 '-o', 'test.webm',
-                'https://www.youtube.com/watch?v=jNQXAC9IVRw'
+                'https://www.youtube.com/watch?v=jNQXAC9IVRw',
             ], cwd=root_dir, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
         sout, serr = outp.communicate()
         self.assertTrue(b'has already been downloaded' not in sout)

test/test_plugins.py

@@ -10,41 +10,103 @@
 sys.path.append(str(TEST_DATA_DIR))
 importlib.invalidate_caches()
 
-from yt_dlp.plugins import PACKAGE_NAME, directories, load_plugins
+from yt_dlp.plugins import (
+    PACKAGE_NAME,
+    PluginSpec,
+    directories,
+    load_plugins,
+    load_all_plugins,
+    register_plugin_spec,
+)
+
+from yt_dlp.globals import (
+    extractors,
+    postprocessors,
+    plugin_dirs,
+    plugin_ies,
+    plugin_pps,
+    all_plugins_loaded,
+    plugin_specs,
+)
+
+
+EXTRACTOR_PLUGIN_SPEC = PluginSpec(
+    module_name='extractor',
+    suffix='IE',
+    destination=extractors,
+    plugin_destination=plugin_ies,
+)
+
+POSTPROCESSOR_PLUGIN_SPEC = PluginSpec(
+    module_name='postprocessor',
+    suffix='PP',
+    destination=postprocessors,
+    plugin_destination=plugin_pps,
+)
+
+
+def reset_plugins():
+    plugin_ies.value = {}
+    plugin_pps.value = {}
+    plugin_dirs.value = ['default']
+    plugin_specs.value = {}
+    all_plugins_loaded.value = False
+    # Clearing override plugins is probably difficult
+    for module_name in tuple(sys.modules):
+        for plugin_type in ('extractor', 'postprocessor'):
+            if module_name.startswith(f'{PACKAGE_NAME}.{plugin_type}.'):
+                del sys.modules[module_name]
+
+    importlib.invalidate_caches()
 
 
 class TestPlugins(unittest.TestCase):
 
     TEST_PLUGIN_DIR = TEST_DATA_DIR / PACKAGE_NAME
 
+    def setUp(self):
+        reset_plugins()
+
+    def tearDown(self):
+        reset_plugins()
+
     def test_directories_containing_plugins(self):
         self.assertIn(self.TEST_PLUGIN_DIR, map(Path, directories()))
 
     def test_extractor_classes(self):
-        for module_name in tuple(sys.modules):
-            if module_name.startswith(f'{PACKAGE_NAME}.extractor'):
-                del sys.modules[module_name]
-        plugins_ie = load_plugins('extractor', 'IE')
+        plugins_ie = load_plugins(EXTRACTOR_PLUGIN_SPEC)
 
         self.assertIn(f'{PACKAGE_NAME}.extractor.normal', sys.modules.keys())
         self.assertIn('NormalPluginIE', plugins_ie.keys())
 
         # don't load modules with underscore prefix
         self.assertFalse(
-            f'{PACKAGE_NAME}.extractor._ignore' in sys.modules.keys(),
+            f'{PACKAGE_NAME}.extractor._ignore' in sys.modules,
             'loaded module beginning with underscore')
         self.assertNotIn('IgnorePluginIE', plugins_ie.keys())
+        self.assertNotIn('IgnorePluginIE', plugin_ies.value)
 
         # Don't load extractors with underscore prefix
         self.assertNotIn('_IgnoreUnderscorePluginIE', plugins_ie.keys())
+        self.assertNotIn('_IgnoreUnderscorePluginIE', plugin_ies.value)
 
         # Don't load extractors not specified in __all__ (if supplied)
         self.assertNotIn('IgnoreNotInAllPluginIE', plugins_ie.keys())
+        self.assertNotIn('IgnoreNotInAllPluginIE', plugin_ies.value)
         self.assertIn('InAllPluginIE', plugins_ie.keys())
+        self.assertIn('InAllPluginIE', plugin_ies.value)
+
+        # Don't load override extractors
+        self.assertNotIn('OverrideGenericIE', plugins_ie.keys())
+        self.assertNotIn('OverrideGenericIE', plugin_ies.value)
+        self.assertNotIn('_UnderscoreOverrideGenericIE', plugins_ie.keys())
+        self.assertNotIn('_UnderscoreOverrideGenericIE', plugin_ies.value)
 
     def test_postprocessor_classes(self):
-        plugins_pp = load_plugins('postprocessor', 'PP')
+        plugins_pp = load_plugins(POSTPROCESSOR_PLUGIN_SPEC)
         self.assertIn('NormalPluginPP', plugins_pp.keys())
+        self.assertIn(f'{PACKAGE_NAME}.postprocessor.normal', sys.modules.keys())
+        self.assertIn('NormalPluginPP', plugin_pps.value)
 
     def test_importing_zipped_module(self):
         zip_path = TEST_DATA_DIR / 'zipped_plugins.zip'
@@ -57,10 +119,10 @@ def test_importing_zipped_module(self):
                 package = importlib.import_module(f'{PACKAGE_NAME}.{plugin_type}')
                 self.assertIn(zip_path / PACKAGE_NAME / plugin_type, map(Path, package.__path__))
 
-            plugins_ie = load_plugins('extractor', 'IE')
+            plugins_ie = load_plugins(EXTRACTOR_PLUGIN_SPEC)
             self.assertIn('ZippedPluginIE', plugins_ie.keys())
 
-            plugins_pp = load_plugins('postprocessor', 'PP')
+            plugins_pp = load_plugins(POSTPROCESSOR_PLUGIN_SPEC)
             self.assertIn('ZippedPluginPP', plugins_pp.keys())
 
         finally:
@@ -68,6 +130,117 @@ def test_importing_zipped_module(self):
             os.remove(zip_path)
             importlib.invalidate_caches()  # reset the import caches
 
+    def test_reloading_plugins(self):
+        reload_plugins_path = TEST_DATA_DIR / 'reload_plugins'
+        load_plugins(EXTRACTOR_PLUGIN_SPEC)
+        load_plugins(POSTPROCESSOR_PLUGIN_SPEC)
+
+        # Remove default folder and add reload_plugin path
+        sys.path.remove(str(TEST_DATA_DIR))
+        sys.path.append(str(reload_plugins_path))
+        importlib.invalidate_caches()
+        try:
+            for plugin_type in ('extractor', 'postprocessor'):
+                package = importlib.import_module(f'{PACKAGE_NAME}.{plugin_type}')
+                self.assertIn(reload_plugins_path / PACKAGE_NAME / plugin_type, map(Path, package.__path__))
+
+            plugins_ie = load_plugins(EXTRACTOR_PLUGIN_SPEC)
+            self.assertIn('NormalPluginIE', plugins_ie.keys())
+            self.assertTrue(
+                plugins_ie['NormalPluginIE'].REPLACED,
+                msg='Reloading has not replaced original extractor plugin')
+            self.assertTrue(
+                extractors.value['NormalPluginIE'].REPLACED,
+                msg='Reloading has not replaced original extractor plugin globally')
+
+            plugins_pp = load_plugins(POSTPROCESSOR_PLUGIN_SPEC)
+            self.assertIn('NormalPluginPP', plugins_pp.keys())
+            self.assertTrue(plugins_pp['NormalPluginPP'].REPLACED,
+                            msg='Reloading has not replaced original postprocessor plugin')
+            self.assertTrue(
+                postprocessors.value['NormalPluginPP'].REPLACED,
+                msg='Reloading has not replaced original postprocessor plugin globally')
+
+        finally:
+            sys.path.remove(str(reload_plugins_path))
+            sys.path.append(str(TEST_DATA_DIR))
+            importlib.invalidate_caches()
+
+    def test_extractor_override_plugin(self):
+        load_plugins(EXTRACTOR_PLUGIN_SPEC)
+
+        from yt_dlp.extractor.generic import GenericIE
+
+        self.assertEqual(GenericIE.TEST_FIELD, 'override')
+        self.assertEqual(GenericIE.SECONDARY_TEST_FIELD, 'underscore-override')
+
+        self.assertEqual(GenericIE.IE_NAME, 'generic+override+underscore-override')
+        importlib.invalidate_caches()
+        #  test that loading a second time doesn't wrap a second time
+        load_plugins(EXTRACTOR_PLUGIN_SPEC)
+        from yt_dlp.extractor.generic import GenericIE
+        self.assertEqual(GenericIE.IE_NAME, 'generic+override+underscore-override')
+
+    def test_load_all_plugin_types(self):
+
+        # no plugin specs registered
+        load_all_plugins()
+
+        self.assertNotIn(f'{PACKAGE_NAME}.extractor.normal', sys.modules.keys())
+        self.assertNotIn(f'{PACKAGE_NAME}.postprocessor.normal', sys.modules.keys())
+
+        register_plugin_spec(EXTRACTOR_PLUGIN_SPEC)
+        register_plugin_spec(POSTPROCESSOR_PLUGIN_SPEC)
+        load_all_plugins()
+        self.assertTrue(all_plugins_loaded.value)
+
+        self.assertIn(f'{PACKAGE_NAME}.extractor.normal', sys.modules.keys())
+        self.assertIn(f'{PACKAGE_NAME}.postprocessor.normal', sys.modules.keys())
+
+    def test_no_plugin_dirs(self):
+        register_plugin_spec(EXTRACTOR_PLUGIN_SPEC)
+        register_plugin_spec(POSTPROCESSOR_PLUGIN_SPEC)
+
+        plugin_dirs.value = []
+        load_all_plugins()
+
+        self.assertNotIn(f'{PACKAGE_NAME}.extractor.normal', sys.modules.keys())
+        self.assertNotIn(f'{PACKAGE_NAME}.postprocessor.normal', sys.modules.keys())
+
+    def test_set_plugin_dirs(self):
+        custom_plugin_dir = str(TEST_DATA_DIR / 'plugin_packages')
+        plugin_dirs.value = [custom_plugin_dir]
+
+        load_plugins(EXTRACTOR_PLUGIN_SPEC)
+
+        self.assertIn(f'{PACKAGE_NAME}.extractor.package', sys.modules.keys())
+        self.assertIn('PackagePluginIE', plugin_ies.value)
+
+    def test_invalid_plugin_dir(self):
+        plugin_dirs.value = ['invalid_dir']
+        with self.assertRaises(ValueError):
+            load_plugins(EXTRACTOR_PLUGIN_SPEC)
+
+    def test_append_plugin_dirs(self):
+        custom_plugin_dir = str(TEST_DATA_DIR / 'plugin_packages')
+
+        self.assertEqual(plugin_dirs.value, ['default'])
+        plugin_dirs.value.append(custom_plugin_dir)
+        self.assertEqual(plugin_dirs.value, ['default', custom_plugin_dir])
+
+        load_plugins(EXTRACTOR_PLUGIN_SPEC)
+
+        self.assertIn(f'{PACKAGE_NAME}.extractor.package', sys.modules.keys())
+        self.assertIn('PackagePluginIE', plugin_ies.value)
+
+    def test_get_plugin_spec(self):
+        register_plugin_spec(EXTRACTOR_PLUGIN_SPEC)
+        register_plugin_spec(POSTPROCESSOR_PLUGIN_SPEC)
+
+        self.assertEqual(plugin_specs.value.get('extractor'), EXTRACTOR_PLUGIN_SPEC)
+        self.assertEqual(plugin_specs.value.get('postprocessor'), POSTPROCESSOR_PLUGIN_SPEC)
+        self.assertIsNone(plugin_specs.value.get('invalid'))
+
 
 if __name__ == '__main__':
     unittest.main()

test/test_post_hooks.py

@@ -59,7 +59,7 @@ def hook_two(self, filename):
 
     def hook_three(self, filename):
         self.files.append(filename)
-        raise Exception('Test exception for \'%s\'' % filename)
+        raise Exception(f'Test exception for \'{filename}\'')
 
     def tearDown(self):
         for f in self.files:

test/test_postprocessors.py

@@ -8,8 +8,10 @@
 sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 
 
+import subprocess
+
 from yt_dlp import YoutubeDL
-from yt_dlp.compat import compat_shlex_quote
+from yt_dlp.utils import shell_quote
 from yt_dlp.postprocessor import (
     ExecPP,
     FFmpegThumbnailsConvertorPP,
@@ -47,7 +49,18 @@ def test_escaping(self):
             print('Skipping: ffmpeg not found')
             return
 
-        file = 'test/testdata/thumbnails/foo %d bar/foo_%d.{}'
+        test_data_dir = 'test/testdata/thumbnails'
+        generated_file = f'{test_data_dir}/empty.webp'
+
+        subprocess.check_call([
+            pp.executable, '-y', '-f', 'lavfi', '-i', 'color=c=black:s=320x320',
+            '-c:v', 'libwebp', '-pix_fmt', 'yuv420p', '-vframes', '1', generated_file,
+        ], stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
+
+        file = test_data_dir + '/foo %d bar/foo_%d.{}'
+        initial_file = file.format('webp')
+        os.replace(generated_file, initial_file)
+
         tests = (('webp', 'png'), ('png', 'jpg'))
 
         for inp, out in tests:
@@ -55,17 +68,19 @@ def test_escaping(self):
             if os.path.exists(out_file):
                 os.remove(out_file)
             pp.convert_thumbnail(file.format(inp), out)
-            assert os.path.exists(out_file)
+            self.assertTrue(os.path.exists(out_file))
 
         for _, out in tests:
             os.remove(file.format(out))
 
+        os.remove(initial_file)
+
 
 class TestExec(unittest.TestCase):
     def test_parse_cmd(self):
         pp = ExecPP(YoutubeDL(), '')
         info = {'filepath': 'file name'}
-        cmd = 'echo %s' % compat_shlex_quote(info['filepath'])
+        cmd = 'echo {}'.format(shell_quote(info['filepath']))
 
         self.assertEqual(pp.parse_cmd('echo', info), cmd)
         self.assertEqual(pp.parse_cmd('echo {}', info), cmd)
@@ -125,7 +140,8 @@ def test_remove_marked_arrange_sponsors_CanGetThroughUnaltered(self):
         self._remove_marked_arrange_sponsors_test_impl(chapters, chapters, [])
 
     def test_remove_marked_arrange_sponsors_ChapterWithSponsors(self):
-        chapters = self._chapters([70], ['c']) + [
+        chapters = [
+            *self._chapters([70], ['c']),
             self._sponsor_chapter(10, 20, 'sponsor'),
             self._sponsor_chapter(30, 40, 'preview'),
             self._sponsor_chapter(50, 60, 'filler')]
@@ -136,7 +152,8 @@ def test_remove_marked_arrange_sponsors_ChapterWithSponsors(self):
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, [])
 
     def test_remove_marked_arrange_sponsors_SponsorBlockChapters(self):
-        chapters = self._chapters([70], ['c']) + [
+        chapters = [
+            *self._chapters([70], ['c']),
             self._sponsor_chapter(10, 20, 'chapter', title='sb c1'),
             self._sponsor_chapter(15, 16, 'chapter', title='sb c2'),
             self._sponsor_chapter(30, 40, 'preview'),
@@ -149,10 +166,14 @@ def test_remove_marked_arrange_sponsors_SponsorBlockChapters(self):
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, [])
 
     def test_remove_marked_arrange_sponsors_UniqueNamesForOverlappingSponsors(self):
-        chapters = self._chapters([120], ['c']) + [
-            self._sponsor_chapter(10, 45, 'sponsor'), self._sponsor_chapter(20, 40, 'selfpromo'),
-            self._sponsor_chapter(50, 70, 'sponsor'), self._sponsor_chapter(60, 85, 'selfpromo'),
-            self._sponsor_chapter(90, 120, 'selfpromo'), self._sponsor_chapter(100, 110, 'sponsor')]
+        chapters = [
+            *self._chapters([120], ['c']),
+            self._sponsor_chapter(10, 45, 'sponsor'),
+            self._sponsor_chapter(20, 40, 'selfpromo'),
+            self._sponsor_chapter(50, 70, 'sponsor'),
+            self._sponsor_chapter(60, 85, 'selfpromo'),
+            self._sponsor_chapter(90, 120, 'selfpromo'),
+            self._sponsor_chapter(100, 110, 'sponsor')]
         expected = self._chapters(
             [10, 20, 40, 45, 50, 60, 70, 85, 90, 100, 110, 120],
             ['c', '[SponsorBlock]: Sponsor', '[SponsorBlock]: Sponsor, Unpaid/Self Promotion',
@@ -172,7 +193,8 @@ def test_remove_marked_arrange_sponsors_ChapterWithCuts(self):
             chapters, self._chapters([40], ['c']), cuts)
 
     def test_remove_marked_arrange_sponsors_ChapterWithSponsorsAndCuts(self):
-        chapters = self._chapters([70], ['c']) + [
+        chapters = [
+            *self._chapters([70], ['c']),
             self._sponsor_chapter(10, 20, 'sponsor'),
             self._sponsor_chapter(30, 40, 'selfpromo', remove=True),
             self._sponsor_chapter(50, 60, 'interaction')]
@@ -185,24 +207,29 @@ def test_remove_marked_arrange_sponsors_ChapterWithSponsorsAndCuts(self):
     def test_remove_marked_arrange_sponsors_ChapterWithSponsorCutInTheMiddle(self):
         cuts = [self._sponsor_chapter(20, 30, 'selfpromo', remove=True),
                 self._chapter(40, 50, remove=True)]
-        chapters = self._chapters([70], ['c']) + [self._sponsor_chapter(10, 60, 'sponsor')] + cuts
+        chapters = [
+            *self._chapters([70], ['c']),
+            self._sponsor_chapter(10, 60, 'sponsor'),
+            *cuts]
         expected = self._chapters(
             [10, 40, 50], ['c', '[SponsorBlock]: Sponsor', 'c'])
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, cuts)
 
     def test_remove_marked_arrange_sponsors_ChapterWithCutHidingSponsor(self):
         cuts = [self._sponsor_chapter(20, 50, 'selfpromo', remove=True)]
-        chapters = self._chapters([60], ['c']) + [
+        chapters = [
+            *self._chapters([60], ['c']),
             self._sponsor_chapter(10, 20, 'intro'),
             self._sponsor_chapter(30, 40, 'sponsor'),
             self._sponsor_chapter(50, 60, 'outro'),
-        ] + cuts
+            *cuts]
         expected = self._chapters(
             [10, 20, 30], ['c', '[SponsorBlock]: Intermission/Intro Animation', '[SponsorBlock]: Endcards/Credits'])
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, cuts)
 
     def test_remove_marked_arrange_sponsors_ChapterWithAdjacentSponsors(self):
-        chapters = self._chapters([70], ['c']) + [
+        chapters = [
+            *self._chapters([70], ['c']),
             self._sponsor_chapter(10, 20, 'sponsor'),
             self._sponsor_chapter(20, 30, 'selfpromo'),
             self._sponsor_chapter(30, 40, 'interaction')]
@@ -213,7 +240,8 @@ def test_remove_marked_arrange_sponsors_ChapterWithAdjacentSponsors(self):
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, [])
 
     def test_remove_marked_arrange_sponsors_ChapterWithAdjacentCuts(self):
-        chapters = self._chapters([70], ['c']) + [
+        chapters = [
+            *self._chapters([70], ['c']),
             self._sponsor_chapter(10, 20, 'sponsor'),
             self._sponsor_chapter(20, 30, 'interaction', remove=True),
             self._chapter(30, 40, remove=True),
@@ -226,7 +254,8 @@ def test_remove_marked_arrange_sponsors_ChapterWithAdjacentCuts(self):
             chapters, expected, [self._chapter(20, 50, remove=True)])
 
     def test_remove_marked_arrange_sponsors_ChapterWithOverlappingSponsors(self):
-        chapters = self._chapters([70], ['c']) + [
+        chapters = [
+            *self._chapters([70], ['c']),
             self._sponsor_chapter(10, 30, 'sponsor'),
             self._sponsor_chapter(20, 50, 'selfpromo'),
             self._sponsor_chapter(40, 60, 'interaction')]
@@ -238,7 +267,8 @@ def test_remove_marked_arrange_sponsors_ChapterWithOverlappingSponsors(self):
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, [])
 
     def test_remove_marked_arrange_sponsors_ChapterWithOverlappingCuts(self):
-        chapters = self._chapters([70], ['c']) + [
+        chapters = [
+            *self._chapters([70], ['c']),
             self._sponsor_chapter(10, 30, 'sponsor', remove=True),
             self._sponsor_chapter(20, 50, 'selfpromo', remove=True),
             self._sponsor_chapter(40, 60, 'interaction', remove=True)]
@@ -246,7 +276,8 @@ def test_remove_marked_arrange_sponsors_ChapterWithOverlappingCuts(self):
             chapters, self._chapters([20], ['c']), [self._chapter(10, 60, remove=True)])
 
     def test_remove_marked_arrange_sponsors_ChapterWithRunsOfOverlappingSponsors(self):
-        chapters = self._chapters([170], ['c']) + [
+        chapters = [
+            *self._chapters([170], ['c']),
             self._sponsor_chapter(0, 30, 'intro'),
             self._sponsor_chapter(20, 50, 'sponsor'),
             self._sponsor_chapter(40, 60, 'selfpromo'),
@@ -267,7 +298,8 @@ def test_remove_marked_arrange_sponsors_ChapterWithRunsOfOverlappingSponsors(sel
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, [])
 
     def test_remove_marked_arrange_sponsors_ChapterWithRunsOfOverlappingCuts(self):
-        chapters = self._chapters([170], ['c']) + [
+        chapters = [
+            *self._chapters([170], ['c']),
             self._chapter(0, 30, remove=True),
             self._sponsor_chapter(20, 50, 'sponsor', remove=True),
             self._chapter(40, 60, remove=True),
@@ -284,7 +316,8 @@ def test_remove_marked_arrange_sponsors_ChapterWithRunsOfOverlappingCuts(self):
             chapters, self._chapters([20], ['c']), expected_cuts)
 
     def test_remove_marked_arrange_sponsors_OverlappingSponsorsDifferentTitlesAfterCut(self):
-        chapters = self._chapters([60], ['c']) + [
+        chapters = [
+            *self._chapters([60], ['c']),
             self._sponsor_chapter(10, 60, 'sponsor'),
             self._sponsor_chapter(10, 40, 'intro'),
             self._sponsor_chapter(30, 50, 'interaction'),
@@ -297,7 +330,8 @@ def test_remove_marked_arrange_sponsors_OverlappingSponsorsDifferentTitlesAfterC
             chapters, expected, [self._chapter(30, 50, remove=True)])
 
     def test_remove_marked_arrange_sponsors_SponsorsNoLongerOverlapAfterCut(self):
-        chapters = self._chapters([70], ['c']) + [
+        chapters = [
+            *self._chapters([70], ['c']),
             self._sponsor_chapter(10, 30, 'sponsor'),
             self._sponsor_chapter(20, 50, 'interaction'),
             self._sponsor_chapter(30, 50, 'selfpromo', remove=True),
@@ -310,7 +344,8 @@ def test_remove_marked_arrange_sponsors_SponsorsNoLongerOverlapAfterCut(self):
             chapters, expected, [self._chapter(30, 50, remove=True)])
 
     def test_remove_marked_arrange_sponsors_SponsorsStillOverlapAfterCut(self):
-        chapters = self._chapters([70], ['c']) + [
+        chapters = [
+            *self._chapters([70], ['c']),
             self._sponsor_chapter(10, 60, 'sponsor'),
             self._sponsor_chapter(20, 60, 'interaction'),
             self._sponsor_chapter(30, 50, 'selfpromo', remove=True)]
@@ -321,7 +356,8 @@ def test_remove_marked_arrange_sponsors_SponsorsStillOverlapAfterCut(self):
             chapters, expected, [self._chapter(30, 50, remove=True)])
 
     def test_remove_marked_arrange_sponsors_ChapterWithRunsOfOverlappingSponsorsAndCuts(self):
-        chapters = self._chapters([200], ['c']) + [
+        chapters = [
+            *self._chapters([200], ['c']),
             self._sponsor_chapter(10, 40, 'sponsor'),
             self._sponsor_chapter(10, 30, 'intro'),
             self._chapter(20, 30, remove=True),
@@ -347,8 +383,9 @@ def test_remove_marked_arrange_sponsors_ChapterWithRunsOfOverlappingSponsorsAndC
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, expected_cuts)
 
     def test_remove_marked_arrange_sponsors_SponsorOverlapsMultipleChapters(self):
-        chapters = (self._chapters([20, 40, 60, 80, 100], ['c1', 'c2', 'c3', 'c4', 'c5'])
-                    + [self._sponsor_chapter(10, 90, 'sponsor')])
+        chapters = [
+            *self._chapters([20, 40, 60, 80, 100], ['c1', 'c2', 'c3', 'c4', 'c5']),
+            self._sponsor_chapter(10, 90, 'sponsor')]
         expected = self._chapters([10, 90, 100], ['c1', '[SponsorBlock]: Sponsor', 'c5'])
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, [])
 
@@ -359,9 +396,10 @@ def test_remove_marked_arrange_sponsors_CutOverlapsMultipleChapters(self):
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, cuts)
 
     def test_remove_marked_arrange_sponsors_SponsorsWithinSomeChaptersAndOverlappingOthers(self):
-        chapters = (self._chapters([10, 40, 60, 80], ['c1', 'c2', 'c3', 'c4'])
-                    + [self._sponsor_chapter(20, 30, 'sponsor'),
-                       self._sponsor_chapter(50, 70, 'selfpromo')])
+        chapters = [
+            *self._chapters([10, 40, 60, 80], ['c1', 'c2', 'c3', 'c4']),
+            self._sponsor_chapter(20, 30, 'sponsor'),
+            self._sponsor_chapter(50, 70, 'selfpromo')]
         expected = self._chapters([10, 20, 30, 40, 50, 70, 80],
                                   ['c1', 'c2', '[SponsorBlock]: Sponsor', 'c2', 'c3',
                                    '[SponsorBlock]: Unpaid/Self Promotion', 'c4'])
@@ -374,8 +412,9 @@ def test_remove_marked_arrange_sponsors_CutsWithinSomeChaptersAndOverlappingOthe
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, cuts)
 
     def test_remove_marked_arrange_sponsors_ChaptersAfterLastSponsor(self):
-        chapters = (self._chapters([20, 40, 50, 60], ['c1', 'c2', 'c3', 'c4'])
-                    + [self._sponsor_chapter(10, 30, 'music_offtopic')])
+        chapters = [
+            *self._chapters([20, 40, 50, 60], ['c1', 'c2', 'c3', 'c4']),
+            self._sponsor_chapter(10, 30, 'music_offtopic')]
         expected = self._chapters(
             [10, 30, 40, 50, 60],
             ['c1', '[SponsorBlock]: Non-Music Section', 'c2', 'c3', 'c4'])
@@ -388,8 +427,9 @@ def test_remove_marked_arrange_sponsors_ChaptersAfterLastCut(self):
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, cuts)
 
     def test_remove_marked_arrange_sponsors_SponsorStartsAtChapterStart(self):
-        chapters = (self._chapters([10, 20, 40], ['c1', 'c2', 'c3'])
-                    + [self._sponsor_chapter(20, 30, 'sponsor')])
+        chapters = [
+            *self._chapters([10, 20, 40], ['c1', 'c2', 'c3']),
+            self._sponsor_chapter(20, 30, 'sponsor')]
         expected = self._chapters([10, 20, 30, 40], ['c1', 'c2', '[SponsorBlock]: Sponsor', 'c3'])
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, [])
 
@@ -400,8 +440,9 @@ def test_remove_marked_arrange_sponsors_CutStartsAtChapterStart(self):
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, cuts)
 
     def test_remove_marked_arrange_sponsors_SponsorEndsAtChapterEnd(self):
-        chapters = (self._chapters([10, 30, 40], ['c1', 'c2', 'c3'])
-                    + [self._sponsor_chapter(20, 30, 'sponsor')])
+        chapters = [
+            *self._chapters([10, 30, 40], ['c1', 'c2', 'c3']),
+            self._sponsor_chapter(20, 30, 'sponsor')]
         expected = self._chapters([10, 20, 30, 40], ['c1', 'c2', '[SponsorBlock]: Sponsor', 'c3'])
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, [])
 
@@ -412,8 +453,9 @@ def test_remove_marked_arrange_sponsors_CutEndsAtChapterEnd(self):
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, cuts)
 
     def test_remove_marked_arrange_sponsors_SponsorCoincidesWithChapters(self):
-        chapters = (self._chapters([10, 20, 30, 40], ['c1', 'c2', 'c3', 'c4'])
-                    + [self._sponsor_chapter(10, 30, 'sponsor')])
+        chapters = [
+            *self._chapters([10, 20, 30, 40], ['c1', 'c2', 'c3', 'c4']),
+            self._sponsor_chapter(10, 30, 'sponsor')]
         expected = self._chapters([10, 30, 40], ['c1', '[SponsorBlock]: Sponsor', 'c4'])
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, [])
 
@@ -424,8 +466,9 @@ def test_remove_marked_arrange_sponsors_CutCoincidesWithChapters(self):
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, cuts)
 
     def test_remove_marked_arrange_sponsors_SponsorsAtVideoBoundaries(self):
-        chapters = (self._chapters([20, 40, 60], ['c1', 'c2', 'c3'])
-                    + [self._sponsor_chapter(0, 10, 'intro'), self._sponsor_chapter(50, 60, 'outro')])
+        chapters = [
+            *self._chapters([20, 40, 60], ['c1', 'c2', 'c3']),
+            self._sponsor_chapter(0, 10, 'intro'), self._sponsor_chapter(50, 60, 'outro')]
         expected = self._chapters(
             [10, 20, 40, 50, 60], ['[SponsorBlock]: Intermission/Intro Animation', 'c1', 'c2', 'c3', '[SponsorBlock]: Endcards/Credits'])
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, [])
@@ -437,8 +480,10 @@ def test_remove_marked_arrange_sponsors_CutsAtVideoBoundaries(self):
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, cuts)
 
     def test_remove_marked_arrange_sponsors_SponsorsOverlapChaptersAtVideoBoundaries(self):
-        chapters = (self._chapters([10, 40, 50], ['c1', 'c2', 'c3'])
-                    + [self._sponsor_chapter(0, 20, 'intro'), self._sponsor_chapter(30, 50, 'outro')])
+        chapters = [
+            *self._chapters([10, 40, 50], ['c1', 'c2', 'c3']),
+            self._sponsor_chapter(0, 20, 'intro'),
+            self._sponsor_chapter(30, 50, 'outro')]
         expected = self._chapters(
             [20, 30, 50], ['[SponsorBlock]: Intermission/Intro Animation', 'c2', '[SponsorBlock]: Endcards/Credits'])
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, [])
@@ -450,8 +495,10 @@ def test_remove_marked_arrange_sponsors_CutsOverlapChaptersAtVideoBoundaries(sel
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, cuts)
 
     def test_remove_marked_arrange_sponsors_EverythingSponsored(self):
-        chapters = (self._chapters([10, 20, 30, 40], ['c1', 'c2', 'c3', 'c4'])
-                    + [self._sponsor_chapter(0, 20, 'intro'), self._sponsor_chapter(20, 40, 'outro')])
+        chapters = [
+            *self._chapters([10, 20, 30, 40], ['c1', 'c2', 'c3', 'c4']),
+            self._sponsor_chapter(0, 20, 'intro'),
+            self._sponsor_chapter(20, 40, 'outro')]
         expected = self._chapters([20, 40], ['[SponsorBlock]: Intermission/Intro Animation', '[SponsorBlock]: Endcards/Credits'])
         self._remove_marked_arrange_sponsors_test_impl(chapters, expected, [])
 
@@ -491,38 +538,39 @@ def test_remove_marked_arrange_sponsors_TinyChapterAtTheStartPrependedToTheNext(
             chapters, self._chapters([2.5], ['c2']), cuts)
 
     def test_remove_marked_arrange_sponsors_TinyChaptersResultingFromSponsorOverlapAreIgnored(self):
-        chapters = self._chapters([1, 3, 4], ['c1', 'c2', 'c3']) + [
+        chapters = [
+            *self._chapters([1, 3, 4], ['c1', 'c2', 'c3']),
             self._sponsor_chapter(1.5, 2.5, 'sponsor')]
         self._remove_marked_arrange_sponsors_test_impl(
             chapters, self._chapters([1.5, 2.5, 4], ['c1', '[SponsorBlock]: Sponsor', 'c3']), [])
 
     def test_remove_marked_arrange_sponsors_TinySponsorsOverlapsAreIgnored(self):
-        chapters = self._chapters([2, 3, 5], ['c1', 'c2', 'c3']) + [
+        chapters = [
+            *self._chapters([2, 3, 5], ['c1', 'c2', 'c3']),
             self._sponsor_chapter(1, 3, 'sponsor'),
-            self._sponsor_chapter(2.5, 4, 'selfpromo')
-        ]
+            self._sponsor_chapter(2.5, 4, 'selfpromo')]
         self._remove_marked_arrange_sponsors_test_impl(
             chapters, self._chapters([1, 3, 4, 5], [
                 'c1', '[SponsorBlock]: Sponsor', '[SponsorBlock]: Unpaid/Self Promotion', 'c3']), [])
 
     def test_remove_marked_arrange_sponsors_TinySponsorsPrependedToTheNextSponsor(self):
-        chapters = self._chapters([4], ['c']) + [
+        chapters = [
+            *self._chapters([4], ['c']),
             self._sponsor_chapter(1.5, 2, 'sponsor'),
-            self._sponsor_chapter(2, 4, 'selfpromo')
-        ]
+            self._sponsor_chapter(2, 4, 'selfpromo')]
         self._remove_marked_arrange_sponsors_test_impl(
             chapters, self._chapters([1.5, 4], ['c', '[SponsorBlock]: Unpaid/Self Promotion']), [])
 
     def test_remove_marked_arrange_sponsors_SmallestSponsorInTheOverlapGetsNamed(self):
         self._pp._sponsorblock_chapter_title = '[SponsorBlock]: %(name)s'
-        chapters = self._chapters([10], ['c']) + [
+        chapters = [
+            *self._chapters([10], ['c']),
             self._sponsor_chapter(2, 8, 'sponsor'),
-            self._sponsor_chapter(4, 6, 'selfpromo')
-        ]
+            self._sponsor_chapter(4, 6, 'selfpromo')]
         self._remove_marked_arrange_sponsors_test_impl(
             chapters, self._chapters([2, 4, 6, 8, 10], [
                 'c', '[SponsorBlock]: Sponsor', '[SponsorBlock]: Unpaid/Self Promotion',
-                '[SponsorBlock]: Sponsor', 'c'
+                '[SponsorBlock]: Sponsor', 'c',
             ]), [])
 
     def test_make_concat_opts_CommonCase(self):
@@ -577,3 +625,7 @@ def test_quote_for_concat_QuotesAtEnd(self):
         self.assertEqual(
             r"'special '\'' characters '\'' galore'\'\'\'",
             self._pp._quote_for_ffmpeg("special ' characters ' galore'''"))
+
+
+if __name__ == '__main__':
+    unittest.main()

test/test_pot/conftest.py

@@ -0,0 +1,71 @@
+import collections
+
+import pytest
+
+from yt_dlp import YoutubeDL
+from yt_dlp.cookies import YoutubeDLCookieJar
+from yt_dlp.extractor.common import InfoExtractor
+from yt_dlp.extractor.youtube.pot._provider import IEContentProviderLogger
+from yt_dlp.extractor.youtube.pot.provider import PoTokenRequest, PoTokenContext
+from yt_dlp.utils.networking import HTTPHeaderDict
+
+
+class MockLogger(IEContentProviderLogger):
+
+    log_level = IEContentProviderLogger.LogLevel.TRACE
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.messages = collections.defaultdict(list)
+
+    def trace(self, message: str):
+        self.messages['trace'].append(message)
+
+    def debug(self, message: str):
+        self.messages['debug'].append(message)
+
+    def info(self, message: str):
+        self.messages['info'].append(message)
+
+    def warning(self, message: str, *, once=False):
+        self.messages['warning'].append(message)
+
+    def error(self, message: str):
+        self.messages['error'].append(message)
+
+
+@pytest.fixture
+def ie() -> InfoExtractor:
+    ydl = YoutubeDL()
+    return ydl.get_info_extractor('Youtube')
+
+
+@pytest.fixture
+def logger() -> MockLogger:
+    return MockLogger()
+
+
+@pytest.fixture()
+def pot_request() -> PoTokenRequest:
+    return PoTokenRequest(
+        context=PoTokenContext.GVS,
+        innertube_context={'client': {'clientName': 'WEB'}},
+        innertube_host='youtube.com',
+        session_index=None,
+        player_url=None,
+        is_authenticated=False,
+        video_webpage=None,
+
+        visitor_data='example-visitor-data',
+        data_sync_id='example-data-sync-id',
+        video_id='example-video-id',
+
+        request_cookiejar=YoutubeDLCookieJar(),
+        request_proxy=None,
+        request_headers=HTTPHeaderDict(),
+        request_timeout=None,
+        request_source_address=None,
+        request_verify_tls=True,
+
+        bypass_cache=False,
+    )

test/test_pot/test_pot_builtin_memorycache.py

@@ -0,0 +1,117 @@
+import threading
+import time
+from collections import OrderedDict
+import pytest
+from yt_dlp.extractor.youtube.pot._provider import IEContentProvider, BuiltinIEContentProvider
+from yt_dlp.utils import bug_reports_message
+from yt_dlp.extractor.youtube.pot._builtin.memory_cache import MemoryLRUPCP, memorylru_preference, initialize_global_cache
+from yt_dlp.version import __version__
+from yt_dlp.extractor.youtube.pot._registry import _pot_cache_providers, _pot_memory_cache
+
+
+class TestMemoryLRUPCS:
+
+    def test_base_type(self):
+        assert issubclass(MemoryLRUPCP, IEContentProvider)
+        assert issubclass(MemoryLRUPCP, BuiltinIEContentProvider)
+
+    @pytest.fixture
+    def pcp(self, ie, logger) -> MemoryLRUPCP:
+        return MemoryLRUPCP(ie, logger, {}, initialize_cache=lambda max_size: (OrderedDict(), threading.Lock(), max_size))
+
+    def test_is_registered(self):
+        assert _pot_cache_providers.value.get('MemoryLRU') == MemoryLRUPCP
+
+    def test_initialization(self, pcp):
+        assert pcp.PROVIDER_NAME == 'memory'
+        assert pcp.PROVIDER_VERSION == __version__
+        assert pcp.BUG_REPORT_MESSAGE == bug_reports_message(before='')
+        assert pcp.is_available()
+
+    def test_store_and_get(self, pcp):
+        pcp.store('key1', 'value1', int(time.time()) + 60)
+        assert pcp.get('key1') == 'value1'
+        assert len(pcp.cache) == 1
+
+    def test_store_ignore_expired(self, pcp):
+        pcp.store('key1', 'value1', int(time.time()) - 1)
+        assert len(pcp.cache) == 0
+        assert pcp.get('key1') is None
+        assert len(pcp.cache) == 0
+
+    def test_store_override_existing_key(self, ie, logger):
+        MAX_SIZE = 2
+        pcp = MemoryLRUPCP(ie, logger, {}, initialize_cache=lambda max_size: (OrderedDict(), threading.Lock(), MAX_SIZE))
+        pcp.store('key1', 'value1', int(time.time()) + 60)
+        pcp.store('key2', 'value2', int(time.time()) + 60)
+        assert len(pcp.cache) == 2
+        pcp.store('key1', 'value2', int(time.time()) + 60)
+        # Ensure that the override key gets added to the end of the cache instead of in the same position
+        pcp.store('key3', 'value3', int(time.time()) + 60)
+        assert pcp.get('key1') == 'value2'
+
+    def test_store_ignore_expired_existing_key(self, pcp):
+        pcp.store('key1', 'value2', int(time.time()) + 60)
+        pcp.store('key1', 'value1', int(time.time()) - 1)
+        assert len(pcp.cache) == 1
+        assert pcp.get('key1') == 'value2'
+        assert len(pcp.cache) == 1
+
+    def test_get_key_expired(self, pcp):
+        pcp.store('key1', 'value1', int(time.time()) + 60)
+        assert pcp.get('key1') == 'value1'
+        assert len(pcp.cache) == 1
+        pcp.cache['key1'] = ('value1', int(time.time()) - 1)
+        assert pcp.get('key1') is None
+        assert len(pcp.cache) == 0
+
+    def test_lru_eviction(self, ie, logger):
+        MAX_SIZE = 2
+        provider = MemoryLRUPCP(ie, logger, {}, initialize_cache=lambda max_size: (OrderedDict(), threading.Lock(), MAX_SIZE))
+        provider.store('key1', 'value1', int(time.time()) + 5)
+        provider.store('key2', 'value2', int(time.time()) + 5)
+        assert len(provider.cache) == 2
+
+        assert provider.get('key1') == 'value1'
+
+        provider.store('key3', 'value3', int(time.time()) + 5)
+        assert len(provider.cache) == 2
+
+        assert provider.get('key2') is None
+
+        provider.store('key4', 'value4', int(time.time()) + 5)
+        assert len(provider.cache) == 2
+
+        assert provider.get('key1') is None
+        assert provider.get('key3') == 'value3'
+        assert provider.get('key4') == 'value4'
+
+    def test_delete(self, pcp):
+        pcp.store('key1', 'value1', int(time.time()) + 5)
+        assert len(pcp.cache) == 1
+        assert pcp.get('key1') == 'value1'
+        pcp.delete('key1')
+        assert len(pcp.cache) == 0
+        assert pcp.get('key1') is None
+
+    def test_use_global_cache_default(self, ie, logger):
+        pcp = MemoryLRUPCP(ie, logger, {})
+        assert pcp.max_size == _pot_memory_cache.value['max_size'] == 25
+        assert pcp.cache is _pot_memory_cache.value['cache']
+        assert pcp.lock is _pot_memory_cache.value['lock']
+
+        pcp2 = MemoryLRUPCP(ie, logger, {})
+        assert pcp.max_size == pcp2.max_size == _pot_memory_cache.value['max_size'] == 25
+        assert pcp.cache is pcp2.cache is _pot_memory_cache.value['cache']
+        assert pcp.lock is pcp2.lock is _pot_memory_cache.value['lock']
+
+    def test_fail_max_size_change_global(self, ie, logger):
+        pcp = MemoryLRUPCP(ie, logger, {})
+        assert pcp.max_size == _pot_memory_cache.value['max_size'] == 25
+        with pytest.raises(ValueError, match='Cannot change max_size of initialized global memory cache'):
+            initialize_global_cache(50)
+
+        assert pcp.max_size == _pot_memory_cache.value['max_size'] == 25
+
+    def test_memory_lru_preference(self, pcp, ie, pot_request):
+        assert memorylru_preference(pcp, pot_request) == 10000

test/test_pot/test_pot_builtin_utils.py

@@ -0,0 +1,47 @@
+import pytest
+from yt_dlp.extractor.youtube.pot.provider import (
+    PoTokenContext,
+
+)
+
+from yt_dlp.extractor.youtube.pot.utils import get_webpo_content_binding, ContentBindingType
+
+
+class TestGetWebPoContentBinding:
+
+    @pytest.mark.parametrize('client_name, context, is_authenticated, expected', [
+        *[(client, context, is_authenticated, expected) for client in [
+            'WEB', 'MWEB', 'TVHTML5', 'WEB_EMBEDDED_PLAYER', 'WEB_CREATOR', 'TVHTML5_SIMPLY_EMBEDDED_PLAYER', 'TVHTML5_SIMPLY']
+          for context, is_authenticated, expected in [
+            (PoTokenContext.GVS, False, ('example-visitor-data', ContentBindingType.VISITOR_DATA)),
+            (PoTokenContext.PLAYER, False, ('example-video-id', ContentBindingType.VIDEO_ID)),
+            (PoTokenContext.SUBS, False, ('example-video-id', ContentBindingType.VIDEO_ID)),
+            (PoTokenContext.GVS, True, ('example-data-sync-id', ContentBindingType.DATASYNC_ID)),
+        ]],
+        ('WEB_REMIX', PoTokenContext.GVS, False, ('example-visitor-data', ContentBindingType.VISITOR_DATA)),
+        ('WEB_REMIX', PoTokenContext.PLAYER, False, ('example-visitor-data', ContentBindingType.VISITOR_DATA)),
+        ('ANDROID', PoTokenContext.GVS, False, (None, None)),
+        ('IOS', PoTokenContext.GVS, False, (None, None)),
+    ])
+    def test_get_webpo_content_binding(self, pot_request, client_name, context, is_authenticated, expected):
+        pot_request.innertube_context['client']['clientName'] = client_name
+        pot_request.context = context
+        pot_request.is_authenticated = is_authenticated
+        assert get_webpo_content_binding(pot_request) == expected
+
+    def test_extract_visitor_id(self, pot_request):
+        pot_request.visitor_data = 'CgsxMjNhYmNYWVpfLSiA4s%2DqBg%3D%3D'
+        assert get_webpo_content_binding(pot_request, bind_to_visitor_id=True) == ('123abcXYZ_-', ContentBindingType.VISITOR_ID)
+
+    def test_invalid_visitor_id(self, pot_request):
+        # visitor id not alphanumeric (i.e. protobuf extraction failed)
+        pot_request.visitor_data = 'CggxMjM0NTY3OCiA4s-qBg%3D%3D'
+        assert get_webpo_content_binding(pot_request, bind_to_visitor_id=True) == (pot_request.visitor_data, ContentBindingType.VISITOR_DATA)
+
+    def test_no_visitor_id(self, pot_request):
+        pot_request.visitor_data = 'KIDiz6oG'
+        assert get_webpo_content_binding(pot_request, bind_to_visitor_id=True) == (pot_request.visitor_data, ContentBindingType.VISITOR_DATA)
+
+    def test_invalid_base64(self, pot_request):
+        pot_request.visitor_data = 'invalid-base64'
+        assert get_webpo_content_binding(pot_request, bind_to_visitor_id=True) == (pot_request.visitor_data, ContentBindingType.VISITOR_DATA)

test/test_pot/test_pot_builtin_webpospec.py

@@ -0,0 +1,92 @@
+import pytest
+
+from yt_dlp.extractor.youtube.pot._provider import IEContentProvider, BuiltinIEContentProvider
+from yt_dlp.extractor.youtube.pot.cache import CacheProviderWritePolicy
+from yt_dlp.utils import bug_reports_message
+from yt_dlp.extractor.youtube.pot.provider import (
+    PoTokenRequest,
+    PoTokenContext,
+
+)
+from yt_dlp.version import __version__
+
+from yt_dlp.extractor.youtube.pot._builtin.webpo_cachespec import WebPoPCSP
+from yt_dlp.extractor.youtube.pot._registry import _pot_pcs_providers
+
+
+@pytest.fixture()
+def pot_request(pot_request) -> PoTokenRequest:
+    pot_request.visitor_data = 'CgsxMjNhYmNYWVpfLSiA4s%2DqBg%3D%3D'  # visitor_id=123abcXYZ_-
+    return pot_request
+
+
+class TestWebPoPCSP:
+    def test_base_type(self):
+        assert issubclass(WebPoPCSP, IEContentProvider)
+        assert issubclass(WebPoPCSP, BuiltinIEContentProvider)
+
+    def test_init(self, ie, logger):
+        pcs = WebPoPCSP(ie=ie, logger=logger, settings={})
+        assert pcs.PROVIDER_NAME == 'webpo'
+        assert pcs.PROVIDER_VERSION == __version__
+        assert pcs.BUG_REPORT_MESSAGE == bug_reports_message(before='')
+        assert pcs.is_available()
+
+    def test_is_registered(self):
+        assert _pot_pcs_providers.value.get('WebPo') == WebPoPCSP
+
+    @pytest.mark.parametrize('client_name, context, is_authenticated', [
+        ('ANDROID', PoTokenContext.GVS, False),
+        ('IOS', PoTokenContext.GVS, False),
+        ('IOS', PoTokenContext.PLAYER, False),
+    ])
+    def test_not_supports(self, ie, logger, pot_request, client_name, context, is_authenticated):
+        pcs = WebPoPCSP(ie=ie, logger=logger, settings={})
+        pot_request.innertube_context['client']['clientName'] = client_name
+        pot_request.context = context
+        pot_request.is_authenticated = is_authenticated
+        assert pcs.generate_cache_spec(pot_request) is None
+
+    @pytest.mark.parametrize('client_name, context, is_authenticated, remote_host, source_address, request_proxy, expected', [
+        *[(client, context, is_authenticated, remote_host, source_address, request_proxy, expected) for client in [
+            'WEB', 'MWEB', 'TVHTML5', 'WEB_EMBEDDED_PLAYER', 'WEB_CREATOR', 'TVHTML5_SIMPLY_EMBEDDED_PLAYER', 'TVHTML5_SIMPLY']
+          for context, is_authenticated, remote_host, source_address, request_proxy, expected in [
+            (PoTokenContext.GVS, False, 'example-remote-host', 'example-source-address', 'example-request-proxy', {'t': 'webpo', 'ip': 'example-remote-host', 'sa': 'example-source-address', 'px': 'example-request-proxy', 'cb': '123abcXYZ_-', 'cbt': 'visitor_id'}),
+            (PoTokenContext.PLAYER, False, 'example-remote-host', 'example-source-address', 'example-request-proxy', {'t': 'webpo', 'ip': 'example-remote-host', 'sa': 'example-source-address', 'px': 'example-request-proxy', 'cb': '123abcXYZ_-', 'cbt': 'video_id'}),
+            (PoTokenContext.GVS, True, 'example-remote-host', 'example-source-address', 'example-request-proxy', {'t': 'webpo', 'ip': 'example-remote-host', 'sa': 'example-source-address', 'px': 'example-request-proxy', 'cb': 'example-data-sync-id', 'cbt': 'datasync_id'}),
+        ]],
+        ('WEB_REMIX', PoTokenContext.PLAYER, False, 'example-remote-host', 'example-source-address', 'example-request-proxy', {'t': 'webpo', 'ip': 'example-remote-host', 'sa': 'example-source-address', 'px': 'example-request-proxy', 'cb': '123abcXYZ_-', 'cbt': 'visitor_id'}),
+        ('WEB', PoTokenContext.GVS, False, None, None, None, {'t': 'webpo', 'cb': '123abcXYZ_-', 'cbt': 'visitor_id', 'ip': None, 'sa': None, 'px': None}),
+        ('TVHTML5', PoTokenContext.PLAYER, False, None, None, 'http://example.com', {'t': 'webpo', 'cb': '123abcXYZ_-', 'cbt': 'video_id', 'ip': None, 'sa': None, 'px': 'http://example.com'}),
+
+    ])
+    def test_generate_key_bindings(self, ie, logger, pot_request, client_name, context, is_authenticated, remote_host, source_address, request_proxy, expected):
+        pcs = WebPoPCSP(ie=ie, logger=logger, settings={})
+        pot_request.innertube_context['client']['clientName'] = client_name
+        pot_request.context = context
+        pot_request.is_authenticated = is_authenticated
+        pot_request.innertube_context['client']['remoteHost'] = remote_host
+        pot_request.request_source_address = source_address
+        pot_request.request_proxy = request_proxy
+        pot_request.video_id = '123abcXYZ_-'  # same as visitor id to test type
+
+        assert pcs.generate_cache_spec(pot_request).key_bindings == expected
+
+    def test_no_bind_visitor_id(self, ie, logger, pot_request):
+        # Should not bind to visitor id if setting is set to False
+        pcs = WebPoPCSP(ie=ie, logger=logger, settings={'bind_to_visitor_id': ['false']})
+        pot_request.innertube_context['client']['clientName'] = 'WEB'
+        pot_request.context = PoTokenContext.GVS
+        pot_request.is_authenticated = False
+        assert pcs.generate_cache_spec(pot_request).key_bindings == {'t': 'webpo', 'ip': None, 'sa': None, 'px': None, 'cb': 'CgsxMjNhYmNYWVpfLSiA4s%2DqBg%3D%3D', 'cbt': 'visitor_data'}
+
+    def test_default_ttl(self, ie, logger, pot_request):
+        pcs = WebPoPCSP(ie=ie, logger=logger, settings={})
+        assert pcs.generate_cache_spec(pot_request).default_ttl == 6 * 60 * 60  # should default to 6 hours
+
+    def test_write_policy(self, ie, logger, pot_request):
+        pcs = WebPoPCSP(ie=ie, logger=logger, settings={})
+        pot_request.context = PoTokenContext.GVS
+        assert pcs.generate_cache_spec(pot_request).write_policy == CacheProviderWritePolicy.WRITE_ALL
+        pot_request.context = PoTokenContext.PLAYER
+        assert pcs.generate_cache_spec(pot_request).write_policy == CacheProviderWritePolicy.WRITE_FIRST

test/test_pot/test_pot_framework.py

@@ -0,0 +1,629 @@
+import pytest
+
+from yt_dlp.extractor.youtube.pot._provider import IEContentProvider
+from yt_dlp.cookies import YoutubeDLCookieJar
+from yt_dlp.utils.networking import HTTPHeaderDict
+from yt_dlp.extractor.youtube.pot.provider import (
+    PoTokenRequest,
+    PoTokenContext,
+    ExternalRequestFeature,
+
+)
+
+from yt_dlp.extractor.youtube.pot.cache import (
+    PoTokenCacheProvider,
+    PoTokenCacheSpec,
+    PoTokenCacheSpecProvider,
+    CacheProviderWritePolicy,
+)
+
+import yt_dlp.extractor.youtube.pot.cache as cache
+
+from yt_dlp.networking import Request
+from yt_dlp.extractor.youtube.pot.provider import (
+    PoTokenResponse,
+    PoTokenProvider,
+    PoTokenProviderRejectedRequest,
+    provider_bug_report_message,
+    register_provider,
+    register_preference,
+)
+
+from yt_dlp.extractor.youtube.pot._registry import _pot_providers, _ptp_preferences, _pot_pcs_providers, _pot_cache_providers, _pot_cache_provider_preferences
+
+
+class ExamplePTP(PoTokenProvider):
+    PROVIDER_NAME = 'example'
+    PROVIDER_VERSION = '0.0.1'
+    BUG_REPORT_LOCATION = 'https://example.com/issues'
+
+    _SUPPORTED_CLIENTS = ('WEB',)
+    _SUPPORTED_CONTEXTS = (PoTokenContext.GVS, )
+
+    _SUPPORTED_EXTERNAL_REQUEST_FEATURES = (
+        ExternalRequestFeature.PROXY_SCHEME_HTTP,
+        ExternalRequestFeature.PROXY_SCHEME_SOCKS5H,
+    )
+
+    def is_available(self) -> bool:
+        return True
+
+    def _real_request_pot(self, request: PoTokenRequest) -> PoTokenResponse:
+        return PoTokenResponse('example-token', expires_at=123)
+
+
+class ExampleCacheProviderPCP(PoTokenCacheProvider):
+
+    PROVIDER_NAME = 'example'
+    PROVIDER_VERSION = '0.0.1'
+    BUG_REPORT_LOCATION = 'https://example.com/issues'
+
+    def is_available(self) -> bool:
+        return True
+
+    def get(self, key: str):
+        return 'example-cache'
+
+    def store(self, key: str, value: str, expires_at: int):
+        pass
+
+    def delete(self, key: str):
+        pass
+
+
+class ExampleCacheSpecProviderPCSP(PoTokenCacheSpecProvider):
+
+    PROVIDER_NAME = 'example'
+    PROVIDER_VERSION = '0.0.1'
+    BUG_REPORT_LOCATION = 'https://example.com/issues'
+
+    def generate_cache_spec(self, request: PoTokenRequest):
+        return PoTokenCacheSpec(
+            key_bindings={'field': 'example-key'},
+            default_ttl=60,
+            write_policy=CacheProviderWritePolicy.WRITE_FIRST,
+        )
+
+
+class TestPoTokenProvider:
+
+    def test_base_type(self):
+        assert issubclass(PoTokenProvider, IEContentProvider)
+
+    def test_create_provider_missing_fetch_method(self, ie, logger):
+        class MissingMethodsPTP(PoTokenProvider):
+            def is_available(self) -> bool:
+                return True
+
+        with pytest.raises(TypeError):
+            MissingMethodsPTP(ie=ie, logger=logger, settings={})
+
+    def test_create_provider_missing_available_method(self, ie, logger):
+        class MissingMethodsPTP(PoTokenProvider):
+            def _real_request_pot(self, request: PoTokenRequest) -> PoTokenResponse:
+                raise PoTokenProviderRejectedRequest('Not implemented')
+
+        with pytest.raises(TypeError):
+            MissingMethodsPTP(ie=ie, logger=logger, settings={})
+
+    def test_barebones_provider(self, ie, logger):
+        class BarebonesProviderPTP(PoTokenProvider):
+            def is_available(self) -> bool:
+                return True
+
+            def _real_request_pot(self, request: PoTokenRequest) -> PoTokenResponse:
+                raise PoTokenProviderRejectedRequest('Not implemented')
+
+        provider = BarebonesProviderPTP(ie=ie, logger=logger, settings={})
+        assert provider.PROVIDER_NAME == 'BarebonesProvider'
+        assert provider.PROVIDER_KEY == 'BarebonesProvider'
+        assert provider.PROVIDER_VERSION == '0.0.0'
+        assert provider.BUG_REPORT_MESSAGE == 'please report this issue to the provider developer at  (developer has not provided a bug report location)  .'
+
+    def test_example_provider_success(self, ie, logger, pot_request):
+        provider = ExamplePTP(ie=ie, logger=logger, settings={})
+        assert provider.PROVIDER_NAME == 'example'
+        assert provider.PROVIDER_KEY == 'Example'
+        assert provider.PROVIDER_VERSION == '0.0.1'
+        assert provider.BUG_REPORT_MESSAGE == 'please report this issue to the provider developer at  https://example.com/issues  .'
+        assert provider.is_available()
+
+        response = provider.request_pot(pot_request)
+
+        assert response.po_token == 'example-token'
+        assert response.expires_at == 123
+
+    def test_provider_unsupported_context(self, ie, logger, pot_request):
+        provider = ExamplePTP(ie=ie, logger=logger, settings={})
+        pot_request.context = PoTokenContext.PLAYER
+
+        with pytest.raises(PoTokenProviderRejectedRequest):
+            provider.request_pot(pot_request)
+
+    def test_provider_unsupported_client(self, ie, logger, pot_request):
+        provider = ExamplePTP(ie=ie, logger=logger, settings={})
+        pot_request.innertube_context['client']['clientName'] = 'ANDROID'
+
+        with pytest.raises(PoTokenProviderRejectedRequest):
+            provider.request_pot(pot_request)
+
+    def test_provider_unsupported_proxy_scheme(self, ie, logger, pot_request):
+        provider = ExamplePTP(ie=ie, logger=logger, settings={})
+        pot_request.request_proxy = 'socks4://example.com'
+
+        with pytest.raises(
+            PoTokenProviderRejectedRequest,
+            match='External requests by "example" provider do not support proxy scheme "socks4". Supported proxy '
+            'schemes: http, socks5h',
+        ):
+            provider.request_pot(pot_request)
+
+        pot_request.request_proxy = 'http://example.com'
+
+        assert provider.request_pot(pot_request)
+
+    def test_provider_ignore_external_request_features(self, ie, logger, pot_request):
+        class InternalPTP(ExamplePTP):
+            _SUPPORTED_EXTERNAL_REQUEST_FEATURES = None
+
+        provider = InternalPTP(ie=ie, logger=logger, settings={})
+
+        pot_request.request_proxy = 'socks5://example.com'
+        assert provider.request_pot(pot_request)
+        pot_request.request_source_address = '0.0.0.0'
+        assert provider.request_pot(pot_request)
+
+    def test_provider_unsupported_external_request_source_address(self, ie, logger, pot_request):
+        class InternalPTP(ExamplePTP):
+            _SUPPORTED_EXTERNAL_REQUEST_FEATURES = tuple()
+
+        provider = InternalPTP(ie=ie, logger=logger, settings={})
+
+        pot_request.request_source_address = None
+        assert provider.request_pot(pot_request)
+
+        pot_request.request_source_address = '0.0.0.0'
+        with pytest.raises(
+            PoTokenProviderRejectedRequest,
+            match='External requests by "example" provider do not support setting source address',
+        ):
+            provider.request_pot(pot_request)
+
+    def test_provider_supported_external_request_source_address(self, ie, logger, pot_request):
+        class InternalPTP(ExamplePTP):
+            _SUPPORTED_EXTERNAL_REQUEST_FEATURES = (
+                ExternalRequestFeature.SOURCE_ADDRESS,
+            )
+
+        provider = InternalPTP(ie=ie, logger=logger, settings={})
+
+        pot_request.request_source_address = None
+        assert provider.request_pot(pot_request)
+
+        pot_request.request_source_address = '0.0.0.0'
+        assert provider.request_pot(pot_request)
+
+    def test_provider_unsupported_external_request_tls_verification(self, ie, logger, pot_request):
+        class InternalPTP(ExamplePTP):
+            _SUPPORTED_EXTERNAL_REQUEST_FEATURES = tuple()
+
+        provider = InternalPTP(ie=ie, logger=logger, settings={})
+
+        pot_request.request_verify_tls = True
+        assert provider.request_pot(pot_request)
+
+        pot_request.request_verify_tls = False
+        with pytest.raises(
+            PoTokenProviderRejectedRequest,
+            match='External requests by "example" provider do not support ignoring TLS certificate failures',
+        ):
+            provider.request_pot(pot_request)
+
+    def test_provider_supported_external_request_tls_verification(self, ie, logger, pot_request):
+        class InternalPTP(ExamplePTP):
+            _SUPPORTED_EXTERNAL_REQUEST_FEATURES = (
+                ExternalRequestFeature.DISABLE_TLS_VERIFICATION,
+            )
+
+        provider = InternalPTP(ie=ie, logger=logger, settings={})
+
+        pot_request.request_verify_tls = True
+        assert provider.request_pot(pot_request)
+
+        pot_request.request_verify_tls = False
+        assert provider.request_pot(pot_request)
+
+    def test_provider_request_webpage(self, ie, logger, pot_request):
+        provider = ExamplePTP(ie=ie, logger=logger, settings={})
+
+        cookiejar = YoutubeDLCookieJar()
+        pot_request.request_headers = HTTPHeaderDict({'User-Agent': 'example-user-agent'})
+        pot_request.request_proxy = 'socks5://example-proxy.com'
+        pot_request.request_cookiejar = cookiejar
+
+        def mock_urlopen(request):
+            return request
+
+        ie._downloader.urlopen = mock_urlopen
+
+        sent_request = provider._request_webpage(Request(
+            'https://example.com',
+        ), pot_request=pot_request)
+
+        assert sent_request.url == 'https://example.com'
+        assert sent_request.headers['User-Agent'] == 'example-user-agent'
+        assert sent_request.proxies == {'all': 'socks5://example-proxy.com'}
+        assert sent_request.extensions['cookiejar'] is cookiejar
+        assert 'Requesting webpage' in logger.messages['info']
+
+    def test_provider_request_webpage_override(self, ie, logger, pot_request):
+        provider = ExamplePTP(ie=ie, logger=logger, settings={})
+
+        cookiejar_request = YoutubeDLCookieJar()
+        pot_request.request_headers = HTTPHeaderDict({'User-Agent': 'example-user-agent'})
+        pot_request.request_proxy = 'socks5://example-proxy.com'
+        pot_request.request_cookiejar = cookiejar_request
+
+        def mock_urlopen(request):
+            return request
+
+        ie._downloader.urlopen = mock_urlopen
+
+        sent_request = provider._request_webpage(Request(
+            'https://example.com',
+            headers={'User-Agent': 'override-user-agent-override'},
+            proxies={'http': 'http://example-proxy-override.com'},
+            extensions={'cookiejar': YoutubeDLCookieJar()},
+        ), pot_request=pot_request, note='Custom requesting webpage')
+
+        assert sent_request.url == 'https://example.com'
+        assert sent_request.headers['User-Agent'] == 'override-user-agent-override'
+        assert sent_request.proxies == {'http': 'http://example-proxy-override.com'}
+        assert sent_request.extensions['cookiejar'] is not cookiejar_request
+        assert 'Custom requesting webpage' in logger.messages['info']
+
+    def test_provider_request_webpage_no_log(self, ie, logger, pot_request):
+        provider = ExamplePTP(ie=ie, logger=logger, settings={})
+
+        def mock_urlopen(request):
+            return request
+
+        ie._downloader.urlopen = mock_urlopen
+
+        sent_request = provider._request_webpage(Request(
+            'https://example.com',
+        ), note=False)
+
+        assert sent_request.url == 'https://example.com'
+        assert 'info' not in logger.messages
+
+    def test_provider_request_webpage_no_pot_request(self, ie, logger):
+        provider = ExamplePTP(ie=ie, logger=logger, settings={})
+
+        def mock_urlopen(request):
+            return request
+
+        ie._downloader.urlopen = mock_urlopen
+
+        sent_request = provider._request_webpage(Request(
+            'https://example.com',
+        ), pot_request=None)
+
+        assert sent_request.url == 'https://example.com'
+
+    def test_get_config_arg(self, ie, logger):
+        provider = ExamplePTP(ie=ie, logger=logger, settings={'abc': ['123D'], 'xyz': ['456a', '789B']})
+
+        assert provider._configuration_arg('abc') == ['123d']
+        assert provider._configuration_arg('abc', default=['default']) == ['123d']
+        assert provider._configuration_arg('ABC', default=['default']) == ['default']
+        assert provider._configuration_arg('abc', casesense=True) == ['123D']
+        assert provider._configuration_arg('xyz', casesense=False) == ['456a', '789b']
+
+    def test_require_class_end_with_suffix(self, ie, logger):
+        class InvalidSuffix(PoTokenProvider):
+            PROVIDER_NAME = 'invalid-suffix'
+
+            def _real_request_pot(self, request: PoTokenRequest) -> PoTokenResponse:
+                raise PoTokenProviderRejectedRequest('Not implemented')
+
+            def is_available(self) -> bool:
+                return True
+
+        provider = InvalidSuffix(ie=ie, logger=logger, settings={})
+
+        with pytest.raises(AssertionError):
+            provider.PROVIDER_KEY  # noqa: B018
+
+
+class TestPoTokenCacheProvider:
+
+    def test_base_type(self):
+        assert issubclass(PoTokenCacheProvider, IEContentProvider)
+
+    def test_create_provider_missing_get_method(self, ie, logger):
+        class MissingMethodsPCP(PoTokenCacheProvider):
+            def store(self, key: str, value: str, expires_at: int):
+                pass
+
+            def delete(self, key: str):
+                pass
+
+                def is_available(self) -> bool:
+                    return True
+
+        with pytest.raises(TypeError):
+            MissingMethodsPCP(ie=ie, logger=logger, settings={})
+
+    def test_create_provider_missing_store_method(self, ie, logger):
+        class MissingMethodsPCP(PoTokenCacheProvider):
+            def get(self, key: str):
+                pass
+
+            def delete(self, key: str):
+                pass
+
+            def is_available(self) -> bool:
+                return True
+
+        with pytest.raises(TypeError):
+            MissingMethodsPCP(ie=ie, logger=logger, settings={})
+
+    def test_create_provider_missing_delete_method(self, ie, logger):
+        class MissingMethodsPCP(PoTokenCacheProvider):
+            def get(self, key: str):
+                pass
+
+            def store(self, key: str, value: str, expires_at: int):
+                pass
+
+            def is_available(self) -> bool:
+                return True
+
+        with pytest.raises(TypeError):
+            MissingMethodsPCP(ie=ie, logger=logger, settings={})
+
+    def test_create_provider_missing_is_available_method(self, ie, logger):
+        class MissingMethodsPCP(PoTokenCacheProvider):
+            def get(self, key: str):
+                pass
+
+            def store(self, key: str, value: str, expires_at: int):
+                pass
+
+            def delete(self, key: str):
+                pass
+
+        with pytest.raises(TypeError):
+            MissingMethodsPCP(ie=ie, logger=logger, settings={})
+
+    def test_barebones_provider(self, ie, logger):
+        class BarebonesProviderPCP(PoTokenCacheProvider):
+
+            def is_available(self) -> bool:
+                return True
+
+            def get(self, key: str):
+                return 'example-cache'
+
+            def store(self, key: str, value: str, expires_at: int):
+                pass
+
+            def delete(self, key: str):
+                pass
+
+        provider = BarebonesProviderPCP(ie=ie, logger=logger, settings={})
+        assert provider.PROVIDER_NAME == 'BarebonesProvider'
+        assert provider.PROVIDER_KEY == 'BarebonesProvider'
+        assert provider.PROVIDER_VERSION == '0.0.0'
+        assert provider.BUG_REPORT_MESSAGE == 'please report this issue to the provider developer at  (developer has not provided a bug report location)  .'
+
+    def test_create_provider_example(self, ie, logger):
+        provider = ExampleCacheProviderPCP(ie=ie, logger=logger, settings={})
+        assert provider.PROVIDER_NAME == 'example'
+        assert provider.PROVIDER_KEY == 'ExampleCacheProvider'
+        assert provider.PROVIDER_VERSION == '0.0.1'
+        assert provider.BUG_REPORT_MESSAGE == 'please report this issue to the provider developer at  https://example.com/issues  .'
+        assert provider.is_available()
+
+    def test_get_config_arg(self, ie, logger):
+        provider = ExampleCacheProviderPCP(ie=ie, logger=logger, settings={'abc': ['123D'], 'xyz': ['456a', '789B']})
+        assert provider._configuration_arg('abc') == ['123d']
+        assert provider._configuration_arg('abc', default=['default']) == ['123d']
+        assert provider._configuration_arg('ABC', default=['default']) == ['default']
+        assert provider._configuration_arg('abc', casesense=True) == ['123D']
+        assert provider._configuration_arg('xyz', casesense=False) == ['456a', '789b']
+
+    def test_require_class_end_with_suffix(self, ie, logger):
+        class InvalidSuffix(PoTokenCacheProvider):
+            def get(self, key: str):
+                return 'example-cache'
+
+            def store(self, key: str, value: str, expires_at: int):
+                pass
+
+            def delete(self, key: str):
+                pass
+
+            def is_available(self) -> bool:
+                return True
+
+        provider = InvalidSuffix(ie=ie, logger=logger, settings={})
+
+        with pytest.raises(AssertionError):
+            provider.PROVIDER_KEY  # noqa: B018
+
+
+class TestPoTokenCacheSpecProvider:
+
+    def test_base_type(self):
+        assert issubclass(PoTokenCacheSpecProvider, IEContentProvider)
+
+    def test_create_provider_missing_supports_method(self, ie, logger):
+        class MissingMethodsPCS(PoTokenCacheSpecProvider):
+            pass
+
+        with pytest.raises(TypeError):
+            MissingMethodsPCS(ie=ie, logger=logger, settings={})
+
+    def test_create_provider_barebones(self, ie, pot_request, logger):
+        class BarebonesProviderPCSP(PoTokenCacheSpecProvider):
+            def generate_cache_spec(self, request: PoTokenRequest):
+                return PoTokenCacheSpec(
+                    default_ttl=100,
+                    key_bindings={},
+                )
+
+        provider = BarebonesProviderPCSP(ie=ie, logger=logger, settings={})
+        assert provider.PROVIDER_NAME == 'BarebonesProvider'
+        assert provider.PROVIDER_KEY == 'BarebonesProvider'
+        assert provider.PROVIDER_VERSION == '0.0.0'
+        assert provider.BUG_REPORT_MESSAGE == 'please report this issue to the provider developer at  (developer has not provided a bug report location)  .'
+        assert provider.is_available()
+        assert provider.generate_cache_spec(request=pot_request).default_ttl == 100
+        assert provider.generate_cache_spec(request=pot_request).key_bindings == {}
+        assert provider.generate_cache_spec(request=pot_request).write_policy == CacheProviderWritePolicy.WRITE_ALL
+
+    def test_create_provider_example(self, ie, pot_request, logger):
+        provider = ExampleCacheSpecProviderPCSP(ie=ie, logger=logger, settings={})
+        assert provider.PROVIDER_NAME == 'example'
+        assert provider.PROVIDER_KEY == 'ExampleCacheSpecProvider'
+        assert provider.PROVIDER_VERSION == '0.0.1'
+        assert provider.BUG_REPORT_MESSAGE == 'please report this issue to the provider developer at  https://example.com/issues  .'
+        assert provider.is_available()
+        assert provider.generate_cache_spec(pot_request)
+        assert provider.generate_cache_spec(pot_request).key_bindings == {'field': 'example-key'}
+        assert provider.generate_cache_spec(pot_request).default_ttl == 60
+        assert provider.generate_cache_spec(pot_request).write_policy == CacheProviderWritePolicy.WRITE_FIRST
+
+    def test_get_config_arg(self, ie, logger):
+        provider = ExampleCacheSpecProviderPCSP(ie=ie, logger=logger, settings={'abc': ['123D'], 'xyz': ['456a', '789B']})
+
+        assert provider._configuration_arg('abc') == ['123d']
+        assert provider._configuration_arg('abc', default=['default']) == ['123d']
+        assert provider._configuration_arg('ABC', default=['default']) == ['default']
+        assert provider._configuration_arg('abc', casesense=True) == ['123D']
+        assert provider._configuration_arg('xyz', casesense=False) == ['456a', '789b']
+
+    def test_require_class_end_with_suffix(self, ie, logger):
+        class InvalidSuffix(PoTokenCacheSpecProvider):
+            def generate_cache_spec(self, request: PoTokenRequest):
+                return None
+
+        provider = InvalidSuffix(ie=ie, logger=logger, settings={})
+
+        with pytest.raises(AssertionError):
+            provider.PROVIDER_KEY  # noqa: B018
+
+
+class TestPoTokenRequest:
+    def test_copy_request(self, pot_request):
+        copied_request = pot_request.copy()
+
+        assert copied_request is not pot_request
+        assert copied_request.context == pot_request.context
+        assert copied_request.innertube_context == pot_request.innertube_context
+        assert copied_request.innertube_context is not pot_request.innertube_context
+        copied_request.innertube_context['client']['clientName'] = 'ANDROID'
+        assert pot_request.innertube_context['client']['clientName'] != 'ANDROID'
+        assert copied_request.innertube_host == pot_request.innertube_host
+        assert copied_request.session_index == pot_request.session_index
+        assert copied_request.player_url == pot_request.player_url
+        assert copied_request.is_authenticated == pot_request.is_authenticated
+        assert copied_request.visitor_data == pot_request.visitor_data
+        assert copied_request.data_sync_id == pot_request.data_sync_id
+        assert copied_request.video_id == pot_request.video_id
+        assert copied_request.request_cookiejar is pot_request.request_cookiejar
+        assert copied_request.request_proxy == pot_request.request_proxy
+        assert copied_request.request_headers == pot_request.request_headers
+        assert copied_request.request_headers is not pot_request.request_headers
+        assert copied_request.request_timeout == pot_request.request_timeout
+        assert copied_request.request_source_address == pot_request.request_source_address
+        assert copied_request.request_verify_tls == pot_request.request_verify_tls
+        assert copied_request.bypass_cache == pot_request.bypass_cache
+
+
+def test_provider_bug_report_message(ie, logger):
+    provider = ExamplePTP(ie=ie, logger=logger, settings={})
+    assert provider.BUG_REPORT_MESSAGE == 'please report this issue to the provider developer at  https://example.com/issues  .'
+
+    message = provider_bug_report_message(provider)
+    assert message == '; please report this issue to the provider developer at  https://example.com/issues  .'
+
+    message_before = provider_bug_report_message(provider, before='custom message!')
+    assert message_before == 'custom message! Please report this issue to the provider developer at  https://example.com/issues  .'
+
+
+def test_register_provider(ie):
+
+    @register_provider
+    class UnavailableProviderPTP(PoTokenProvider):
+        def is_available(self) -> bool:
+            return False
+
+        def _real_request_pot(self, request: PoTokenRequest) -> PoTokenResponse:
+            raise PoTokenProviderRejectedRequest('Not implemented')
+
+    assert _pot_providers.value.get('UnavailableProvider') == UnavailableProviderPTP
+    _pot_providers.value.pop('UnavailableProvider')
+
+
+def test_register_pot_preference(ie):
+    before = len(_ptp_preferences.value)
+
+    @register_preference(ExamplePTP)
+    def unavailable_preference(provider: PoTokenProvider, request: PoTokenRequest):
+        return 1
+
+    assert len(_ptp_preferences.value) == before + 1
+
+
+def test_register_cache_provider(ie):
+
+    @cache.register_provider
+    class UnavailableCacheProviderPCP(PoTokenCacheProvider):
+        def is_available(self) -> bool:
+            return False
+
+        def get(self, key: str):
+            return 'example-cache'
+
+        def store(self, key: str, value: str, expires_at: int):
+            pass
+
+        def delete(self, key: str):
+            pass
+
+    assert _pot_cache_providers.value.get('UnavailableCacheProvider') == UnavailableCacheProviderPCP
+    _pot_cache_providers.value.pop('UnavailableCacheProvider')
+
+
+def test_register_cache_provider_spec(ie):
+
+    @cache.register_spec
+    class UnavailableCacheProviderPCSP(PoTokenCacheSpecProvider):
+        def is_available(self) -> bool:
+            return False
+
+        def generate_cache_spec(self, request: PoTokenRequest):
+            return None
+
+    assert _pot_pcs_providers.value.get('UnavailableCacheProvider') == UnavailableCacheProviderPCSP
+    _pot_pcs_providers.value.pop('UnavailableCacheProvider')
+
+
+def test_register_cache_provider_preference(ie):
+    before = len(_pot_cache_provider_preferences.value)
+
+    @cache.register_preference(ExampleCacheProviderPCP)
+    def unavailable_preference(provider: PoTokenCacheProvider, request: PoTokenRequest):
+        return 1
+
+    assert len(_pot_cache_provider_preferences.value) == before + 1
+
+
+def test_logger_log_level(logger):
+    assert logger.LogLevel('INFO') == logger.LogLevel.INFO
+    assert logger.LogLevel('debuG') == logger.LogLevel.DEBUG
+    assert logger.LogLevel(10) == logger.LogLevel.DEBUG
+    assert logger.LogLevel('UNKNOWN') == logger.LogLevel.INFO

test/test_socks.py

@@ -95,7 +95,7 @@ def handle(self):
             return
 
         elif Socks5Auth.AUTH_USER_PASS in methods:
-            self.connection.sendall(struct.pack("!BB", SOCKS5_VERSION, Socks5Auth.AUTH_USER_PASS))
+            self.connection.sendall(struct.pack('!BB', SOCKS5_VERSION, Socks5Auth.AUTH_USER_PASS))
 
             _, user_len = struct.unpack('!BB', self.connection.recv(2))
             username = self.connection.recv(user_len).decode()
@@ -174,7 +174,7 @@ def handle(self):
         if 0x0 < dest_ip <= 0xFF:
             use_remote_dns = True
         else:
-            socks_info['ipv4_address'] = socket.inet_ntoa(struct.pack("!I", dest_ip))
+            socks_info['ipv4_address'] = socket.inet_ntoa(struct.pack('!I', dest_ip))
 
         user_id = self._read_until_null().decode()
         if user_id != (self.socks_kwargs.get('user_id') or ''):
@@ -216,7 +216,9 @@ def handle(self):
         protocol = websockets.ServerProtocol()
         connection = websockets.sync.server.ServerConnection(socket=self.request, protocol=protocol, close_timeout=0)
         connection.handshake()
-        connection.send(json.dumps(self.socks_info))
+        for message in connection:
+            if message == 'socks_info':
+                connection.send(json.dumps(self.socks_info))
         connection.close()
 
 
@@ -291,7 +293,7 @@ def ctx(request):
         ('Urllib', 'http'),
         ('Requests', 'http'),
         ('Websockets', 'ws'),
-        ('CurlCFFI', 'http')
+        ('CurlCFFI', 'http'),
     ], indirect=True)
 class TestSocks4Proxy:
     def test_socks4_no_auth(self, handler, ctx):
@@ -366,7 +368,7 @@ def test_timeout(self, handler, ctx):
         ('Urllib', 'http'),
         ('Requests', 'http'),
         ('Websockets', 'ws'),
-        ('CurlCFFI', 'http')
+        ('CurlCFFI', 'http'),
     ], indirect=True)
 class TestSocks5Proxy:
 

test/test_subtitles.py

@@ -14,7 +14,6 @@
     NRKTVIE,
     PBSIE,
     CeskaTelevizeIE,
-    ComedyCentralIE,
     DailymotionIE,
     DemocracynowIE,
     LyndaIE,
@@ -23,7 +22,6 @@
     TedTalkIE,
     ThePlatformFeedIE,
     ThePlatformIE,
-    VikiIE,
     VimeoIE,
     WallaIE,
     YoutubeIE,
@@ -40,12 +38,11 @@ def setUp(self):
         self.ie = self.IE()
         self.DL.add_info_extractor(self.ie)
         if not self.IE.working():
-            print('Skipping: %s marked as not _WORKING' % self.IE.ie_key())
+            print(f'Skipping: {self.IE.ie_key()} marked as not _WORKING')
             self.skipTest('IE marked as not _WORKING')
 
     def getInfoDict(self):
-        info_dict = self.DL.extract_info(self.url, download=False)
-        return info_dict
+        return self.DL.extract_info(self.url, download=False)
 
     def getSubtitles(self):
         info_dict = self.getInfoDict()
@@ -87,7 +84,7 @@ def test_youtube_allsubtitles(self):
         self.assertEqual(md5(subtitles['en']), 'ae1bd34126571a77aabd4d276b28044d')
         self.assertEqual(md5(subtitles['it']), '0e0b667ba68411d88fd1c5f4f4eab2f9')
         for lang in ['fr', 'de']:
-            self.assertTrue(subtitles.get(lang) is not None, 'Subtitles for \'%s\' not extracted' % lang)
+            self.assertTrue(subtitles.get(lang) is not None, f'Subtitles for \'{lang}\' not extracted')
 
     def _test_subtitles_format(self, fmt, md5_hash, lang='en'):
         self.DL.params['writesubtitles'] = True
@@ -157,7 +154,7 @@ def test_allsubtitles(self):
         self.assertEqual(md5(subtitles['en']), '976553874490cba125086bbfea3ff76f')
         self.assertEqual(md5(subtitles['fr']), '594564ec7d588942e384e920e5341792')
         for lang in ['es', 'fr', 'de']:
-            self.assertTrue(subtitles.get(lang) is not None, 'Subtitles for \'%s\' not extracted' % lang)
+            self.assertTrue(subtitles.get(lang) is not None, f'Subtitles for \'{lang}\' not extracted')
 
     def test_nosubtitles(self):
         self.DL.expect_warning('video doesn\'t have subtitles')
@@ -182,7 +179,7 @@ def test_allsubtitles(self):
         self.assertEqual(md5(subtitles['en']), '4262c1665ff928a2dada178f62cb8d14')
         self.assertEqual(md5(subtitles['fr']), '66a63f7f42c97a50f8c0e90bc7797bb5')
         for lang in ['es', 'fr', 'de']:
-            self.assertTrue(subtitles.get(lang) is not None, 'Subtitles for \'%s\' not extracted' % lang)
+            self.assertTrue(subtitles.get(lang) is not None, f'Subtitles for \'{lang}\' not extracted')
 
 
 @is_download_test
@@ -281,23 +278,6 @@ def test_allsubtitles(self):
         self.assertEqual(md5(subtitles['nl']), 'fc6435027572b63fb4ab143abd5ad3f4')
 
 
-@is_download_test
-@unittest.skip('IE broken')
-class TestMTVSubtitles(BaseTestSubtitles):
-    url = 'http://www.cc.com/video-clips/p63lk0/adam-devine-s-house-party-chasing-white-swans'
-    IE = ComedyCentralIE
-
-    def getInfoDict(self):
-        return super().getInfoDict()['entries'][0]
-
-    def test_allsubtitles(self):
-        self.DL.params['writesubtitles'] = True
-        self.DL.params['allsubtitles'] = True
-        subtitles = self.getSubtitles()
-        self.assertEqual(set(subtitles.keys()), {'en'})
-        self.assertEqual(md5(subtitles['en']), '78206b8d8a0cfa9da64dc026eea48961')
-
-
 @is_download_test
 class TestNRKSubtitles(BaseTestSubtitles):
     url = 'http://tv.nrk.no/serie/ikke-gjoer-dette-hjemme/DMPV73000411/sesong-2/episode-1'
@@ -332,20 +312,6 @@ def test_subtitles_array_key(self):
         self.assertEqual(md5(subtitles['it']), '4b3264186fbb103508abe5311cfcb9cd')
 
 
-@is_download_test
-@unittest.skip('IE broken - DRM only')
-class TestVikiSubtitles(BaseTestSubtitles):
-    url = 'http://www.viki.com/videos/1060846v-punch-episode-18'
-    IE = VikiIE
-
-    def test_allsubtitles(self):
-        self.DL.params['writesubtitles'] = True
-        self.DL.params['allsubtitles'] = True
-        subtitles = self.getSubtitles()
-        self.assertEqual(set(subtitles.keys()), {'en'})
-        self.assertEqual(md5(subtitles['en']), '53cb083a5914b2d84ef1ab67b880d18a')
-
-
 @is_download_test
 class TestThePlatformSubtitles(BaseTestSubtitles):
     # from http://www.3playmedia.com/services-features/tools/integrations/theplatform/

test/test_traversal.py

@@ -4,8 +4,23 @@
 
 import pytest
 
-from yt_dlp.utils import dict_get, int_or_none, str_or_none
-from yt_dlp.utils.traversal import traverse_obj
+from yt_dlp.utils import (
+    ExtractorError,
+    determine_ext,
+    dict_get,
+    int_or_none,
+    join_nonempty,
+    str_or_none,
+)
+from yt_dlp.utils.traversal import (
+    find_element,
+    find_elements,
+    require,
+    subs_list_to_dict,
+    traverse_obj,
+    trim_str,
+    unpack,
+)
 
 _TEST_DATA = {
     100: 100,
@@ -24,6 +39,14 @@
     'dict': {},
 }
 
+_TEST_HTML = '''<html><body>
+    <div class="a">1</div>
+    <div class="a" id="x" custom="z">2</div>
+    <div class="b" data-id="y" custom="z">3</div>
+    <p class="a">4</p>
+    <p id="d" custom="e">5</p>
+</body></html>'''
+
 
 class TestTraversal:
     def test_traversal_base(self):
@@ -31,7 +54,7 @@ def test_traversal_base(self):
             'allow tuple path'
         assert traverse_obj(_TEST_DATA, ['str']) == 'str', \
             'allow list path'
-        assert traverse_obj(_TEST_DATA, (value for value in ("str",))) == 'str', \
+        assert traverse_obj(_TEST_DATA, (value for value in ('str',))) == 'str', \
             'allow iterable path'
         assert traverse_obj(_TEST_DATA, 'str') == 'str', \
             'single items should be treated as a path'
@@ -70,7 +93,7 @@ def test_traversal_function(self):
 
     def test_traversal_set(self):
         # transformation/type, like `expected_type`
-        assert traverse_obj(_TEST_DATA, (..., {str.upper}, )) == ['STR'], \
+        assert traverse_obj(_TEST_DATA, (..., {str.upper})) == ['STR'], \
             'Function in set should be a transformation'
         assert traverse_obj(_TEST_DATA, (..., {str})) == ['str'], \
             'Type in set should be a type filter'
@@ -276,7 +299,7 @@ def test_traversal_traverse_string(self):
             '`...` should result in string (same value) if `traverse_string`'
         assert traverse_obj(_TRAVERSE_STRING_DATA, ('str', slice(0, None, 2)), traverse_string=True) == 'sr', \
             '`slice` should result in string if `traverse_string`'
-        assert traverse_obj(_TRAVERSE_STRING_DATA, ('str', lambda i, v: i or v == "s"), traverse_string=True) == 'str', \
+        assert traverse_obj(_TRAVERSE_STRING_DATA, ('str', lambda i, v: i or v == 's'), traverse_string=True) == 'str', \
             'function should result in string if `traverse_string`'
         assert traverse_obj(_TRAVERSE_STRING_DATA, ('str', (0, 2)), traverse_string=True) == ['s', 'r'], \
             'branching should result in list if `traverse_string`'
@@ -393,18 +416,8 @@ def test_traversal_unbranching(self):
             '`any` should allow further branching'
 
     def test_traversal_morsel(self):
-        values = {
-            'expires': 'a',
-            'path': 'b',
-            'comment': 'c',
-            'domain': 'd',
-            'max-age': 'e',
-            'secure': 'f',
-            'httponly': 'g',
-            'version': 'h',
-            'samesite': 'i',
-        }
         morsel = http.cookies.Morsel()
+        values = dict(zip(morsel, 'abcdefghijklmnop'))
         morsel.set('item_key', 'item_value', 'coded_value')
         morsel.update(values)
         values['key'] = 'item_key'
@@ -420,6 +433,186 @@ def test_traversal_morsel(self):
         assert traverse_obj(morsel, [(None,), any]) == morsel, \
             'Morsel should not be implicitly changed to dict on usage'
 
+    def test_traversal_filter(self):
+        data = [None, False, True, 0, 1, 0.0, 1.1, '', 'str', {}, {0: 0}, [], [1]]
+
+        assert traverse_obj(data, [..., filter]) == [True, 1, 1.1, 'str', {0: 0}, [1]], \
+            '`filter` should filter falsy values'
+
+
+class TestTraversalHelpers:
+    def test_traversal_require(self):
+        with pytest.raises(ExtractorError):
+            traverse_obj(_TEST_DATA, ['None', {require('value')}])
+        assert traverse_obj(_TEST_DATA, ['str', {require('value')}]) == 'str', \
+            '`require` should pass through non `None` values'
+
+    def test_subs_list_to_dict(self):
+        assert traverse_obj([
+            {'name': 'de', 'url': 'https://example.com/subs/de.vtt'},
+            {'name': 'en', 'url': 'https://example.com/subs/en1.ass'},
+            {'name': 'en', 'url': 'https://example.com/subs/en2.ass'},
+        ], [..., {
+            'id': 'name',
+            'url': 'url',
+        }, all, {subs_list_to_dict}]) == {
+            'de': [{'url': 'https://example.com/subs/de.vtt'}],
+            'en': [
+                {'url': 'https://example.com/subs/en1.ass'},
+                {'url': 'https://example.com/subs/en2.ass'},
+            ],
+        }, 'function should build subtitle dict from list of subtitles'
+        assert traverse_obj([
+            {'name': 'de', 'url': 'https://example.com/subs/de.ass'},
+            {'name': 'de'},
+            {'name': 'en', 'content': 'content'},
+            {'url': 'https://example.com/subs/en'},
+        ], [..., {
+            'id': 'name',
+            'data': 'content',
+            'url': 'url',
+        }, all, {subs_list_to_dict(lang=None)}]) == {
+            'de': [{'url': 'https://example.com/subs/de.ass'}],
+            'en': [{'data': 'content'}],
+        }, 'subs with mandatory items missing should be filtered'
+        assert traverse_obj([
+            {'url': 'https://example.com/subs/de.ass', 'name': 'de'},
+            {'url': 'https://example.com/subs/en', 'name': 'en'},
+        ], [..., {
+            'id': 'name',
+            'ext': ['url', {determine_ext(default_ext=None)}],
+            'url': 'url',
+        }, all, {subs_list_to_dict(ext='ext')}]) == {
+            'de': [{'url': 'https://example.com/subs/de.ass', 'ext': 'ass'}],
+            'en': [{'url': 'https://example.com/subs/en', 'ext': 'ext'}],
+        }, '`ext` should set default ext but leave existing value untouched'
+        assert traverse_obj([
+            {'name': 'en', 'url': 'https://example.com/subs/en2', 'prio': True},
+            {'name': 'en', 'url': 'https://example.com/subs/en1', 'prio': False},
+        ], [..., {
+            'id': 'name',
+            'quality': ['prio', {int}],
+            'url': 'url',
+        }, all, {subs_list_to_dict(ext='ext')}]) == {'en': [
+            {'url': 'https://example.com/subs/en1', 'ext': 'ext'},
+            {'url': 'https://example.com/subs/en2', 'ext': 'ext'},
+        ]}, '`quality` key should sort subtitle list accordingly'
+        assert traverse_obj([
+            {'name': 'de', 'url': 'https://example.com/subs/de.ass'},
+            {'name': 'de'},
+            {'name': 'en', 'content': 'content'},
+            {'url': 'https://example.com/subs/en'},
+        ], [..., {
+            'id': 'name',
+            'url': 'url',
+            'data': 'content',
+        }, all, {subs_list_to_dict(lang='en')}]) == {
+            'de': [{'url': 'https://example.com/subs/de.ass'}],
+            'en': [
+                {'data': 'content'},
+                {'url': 'https://example.com/subs/en'},
+            ],
+        }, 'optionally provided lang should be used if no id available'
+        assert traverse_obj([
+            {'name': 1, 'url': 'https://example.com/subs/de1'},
+            {'name': {}, 'url': 'https://example.com/subs/de2'},
+            {'name': 'de', 'ext': 1, 'url': 'https://example.com/subs/de3'},
+            {'name': 'de', 'ext': {}, 'url': 'https://example.com/subs/de4'},
+        ], [..., {
+            'id': 'name',
+            'url': 'url',
+            'ext': 'ext',
+        }, all, {subs_list_to_dict(lang=None)}]) == {
+            'de': [
+                {'url': 'https://example.com/subs/de3'},
+                {'url': 'https://example.com/subs/de4'},
+            ],
+        }, 'non str types should be ignored for id and ext'
+        assert traverse_obj([
+            {'name': 1, 'url': 'https://example.com/subs/de1'},
+            {'name': {}, 'url': 'https://example.com/subs/de2'},
+            {'name': 'de', 'ext': 1, 'url': 'https://example.com/subs/de3'},
+            {'name': 'de', 'ext': {}, 'url': 'https://example.com/subs/de4'},
+        ], [..., {
+            'id': 'name',
+            'url': 'url',
+            'ext': 'ext',
+        }, all, {subs_list_to_dict(lang='de')}]) == {
+            'de': [
+                {'url': 'https://example.com/subs/de1'},
+                {'url': 'https://example.com/subs/de2'},
+                {'url': 'https://example.com/subs/de3'},
+                {'url': 'https://example.com/subs/de4'},
+            ],
+        }, 'non str types should be replaced by default id'
+
+    def test_trim_str(self):
+        with pytest.raises(TypeError):
+            trim_str('positional')
+
+        assert callable(trim_str(start='a'))
+        assert trim_str(start='ab')('abc') == 'c'
+        assert trim_str(end='bc')('abc') == 'a'
+        assert trim_str(start='a', end='c')('abc') == 'b'
+        assert trim_str(start='ab', end='c')('abc') == ''
+        assert trim_str(start='a', end='bc')('abc') == ''
+        assert trim_str(start='ab', end='bc')('abc') == ''
+        assert trim_str(start='abc', end='abc')('abc') == ''
+        assert trim_str(start='', end='')('abc') == 'abc'
+
+    def test_unpack(self):
+        assert unpack(lambda *x: ''.join(map(str, x)))([1, 2, 3]) == '123'
+        assert unpack(join_nonempty)([1, 2, 3]) == '1-2-3'
+        assert unpack(join_nonempty, delim=' ')([1, 2, 3]) == '1 2 3'
+        with pytest.raises(TypeError):
+            unpack(join_nonempty)()
+        with pytest.raises(TypeError):
+            unpack()
+
+    def test_find_element(self):
+        for improper_kwargs in [
+            dict(attr='data-id'),
+            dict(value='y'),
+            dict(attr='data-id', value='y', cls='a'),
+            dict(attr='data-id', value='y', id='x'),
+            dict(cls='a', id='x'),
+            dict(cls='a', tag='p'),
+            dict(cls='[ab]', regex=True),
+        ]:
+            with pytest.raises(AssertionError):
+                find_element(**improper_kwargs)(_TEST_HTML)
+
+        assert find_element(cls='a')(_TEST_HTML) == '1'
+        assert find_element(cls='a', html=True)(_TEST_HTML) == '<div class="a">1</div>'
+        assert find_element(id='x')(_TEST_HTML) == '2'
+        assert find_element(id='[ex]')(_TEST_HTML) is None
+        assert find_element(id='[ex]', regex=True)(_TEST_HTML) == '2'
+        assert find_element(id='x', html=True)(_TEST_HTML) == '<div class="a" id="x" custom="z">2</div>'
+        assert find_element(attr='data-id', value='y')(_TEST_HTML) == '3'
+        assert find_element(attr='data-id', value='y(?:es)?')(_TEST_HTML) is None
+        assert find_element(attr='data-id', value='y(?:es)?', regex=True)(_TEST_HTML) == '3'
+        assert find_element(
+            attr='data-id', value='y', html=True)(_TEST_HTML) == '<div class="b" data-id="y" custom="z">3</div>'
+
+    def test_find_elements(self):
+        for improper_kwargs in [
+            dict(tag='p'),
+            dict(attr='data-id'),
+            dict(value='y'),
+            dict(attr='data-id', value='y', cls='a'),
+            dict(cls='a', tag='div'),
+            dict(cls='[ab]', regex=True),
+        ]:
+            with pytest.raises(AssertionError):
+                find_elements(**improper_kwargs)(_TEST_HTML)
+
+        assert find_elements(cls='a')(_TEST_HTML) == ['1', '2', '4']
+        assert find_elements(cls='a', html=True)(_TEST_HTML) == [
+            '<div class="a">1</div>', '<div class="a" id="x" custom="z">2</div>', '<p class="a">4</p>']
+        assert find_elements(attr='custom', value='z')(_TEST_HTML) == ['2', '3']
+        assert find_elements(attr='custom', value='[ez]')(_TEST_HTML) == []
+        assert find_elements(attr='custom', value='[ez]', regex=True)(_TEST_HTML) == ['2', '3', '5']
+
 
 class TestDictGet:
     def test_dict_get(self):

test/test_update.py

@@ -78,32 +78,52 @@
 
 TEST_LOCKFILE_COMMENT = '# This file is used for regulating self-update'
 
-TEST_LOCKFILE_V1 = r'''%s
+TEST_LOCKFILE_V1 = rf'''{TEST_LOCKFILE_COMMENT}
 lock 2022.08.18.36 .+ Python 3\.6
 lock 2023.11.16 (?!win_x86_exe).+ Python 3\.7
 lock 2023.11.16 win_x86_exe .+ Windows-(?:Vista|2008Server)
-''' % TEST_LOCKFILE_COMMENT
+lock 2024.10.22 py2exe .+
+lock 2024.10.22 linux_(?:armv7l|aarch64)_exe .+-glibc2\.(?:[12]?\d|30)\b
+lock 2024.10.22 zip Python 3\.8
+lock 2024.10.22 win(?:_x86)?_exe Python 3\.[78].+ Windows-(?:7-|2008ServerR2)
+lock 2025.08.11 darwin_legacy_exe .+
+'''
 
 TEST_LOCKFILE_V2_TMPL = r'''%s
 lockV2 yt-dlp/yt-dlp 2022.08.18.36 .+ Python 3\.6
 lockV2 yt-dlp/yt-dlp 2023.11.16 (?!win_x86_exe).+ Python 3\.7
 lockV2 yt-dlp/yt-dlp 2023.11.16 win_x86_exe .+ Windows-(?:Vista|2008Server)
+lockV2 yt-dlp/yt-dlp 2024.10.22 py2exe .+
+lockV2 yt-dlp/yt-dlp 2024.10.22 linux_(?:armv7l|aarch64)_exe .+-glibc2\.(?:[12]?\d|30)\b
+lockV2 yt-dlp/yt-dlp 2024.10.22 zip Python 3\.8
+lockV2 yt-dlp/yt-dlp 2024.10.22 win(?:_x86)?_exe Python 3\.[78].+ Windows-(?:7-|2008ServerR2)
+lockV2 yt-dlp/yt-dlp 2025.08.11 darwin_legacy_exe .+
 lockV2 yt-dlp/yt-dlp-nightly-builds 2023.11.15.232826 (?!win_x86_exe).+ Python 3\.7
 lockV2 yt-dlp/yt-dlp-nightly-builds 2023.11.15.232826 win_x86_exe .+ Windows-(?:Vista|2008Server)
+lockV2 yt-dlp/yt-dlp-nightly-builds 2024.10.22.051025 py2exe .+
+lockV2 yt-dlp/yt-dlp-nightly-builds 2024.10.22.051025 linux_(?:armv7l|aarch64)_exe .+-glibc2\.(?:[12]?\d|30)\b
+lockV2 yt-dlp/yt-dlp-nightly-builds 2024.10.22.051025 zip Python 3\.8
+lockV2 yt-dlp/yt-dlp-nightly-builds 2024.10.22.051025 win(?:_x86)?_exe Python 3\.[78].+ Windows-(?:7-|2008ServerR2)
+lockV2 yt-dlp/yt-dlp-nightly-builds 2025.08.12.233030 darwin_legacy_exe .+
 lockV2 yt-dlp/yt-dlp-master-builds 2023.11.15.232812 (?!win_x86_exe).+ Python 3\.7
 lockV2 yt-dlp/yt-dlp-master-builds 2023.11.15.232812 win_x86_exe .+ Windows-(?:Vista|2008Server)
+lockV2 yt-dlp/yt-dlp-master-builds 2024.10.22.045052 py2exe .+
+lockV2 yt-dlp/yt-dlp-master-builds 2024.10.22.060347 linux_(?:armv7l|aarch64)_exe .+-glibc2\.(?:[12]?\d|30)\b
+lockV2 yt-dlp/yt-dlp-master-builds 2024.10.22.060347 zip Python 3\.8
+lockV2 yt-dlp/yt-dlp-master-builds 2024.10.22.060347 win(?:_x86)?_exe Python 3\.[78].+ Windows-(?:7-|2008ServerR2)
+lockV2 yt-dlp/yt-dlp-master-builds 2025.08.12.232447 darwin_legacy_exe .+
 '''
 
 TEST_LOCKFILE_V2 = TEST_LOCKFILE_V2_TMPL % TEST_LOCKFILE_COMMENT
 
 TEST_LOCKFILE_ACTUAL = TEST_LOCKFILE_V2_TMPL % TEST_LOCKFILE_V1.rstrip('\n')
 
-TEST_LOCKFILE_FORK = r'''%s# Test if a fork blocks updates to non-numeric tags
+TEST_LOCKFILE_FORK = rf'''{TEST_LOCKFILE_ACTUAL}# Test if a fork blocks updates to non-numeric tags
 lockV2 fork/yt-dlp pr0000 .+ Python 3.6
 lockV2 fork/yt-dlp pr1234 (?!win_x86_exe).+ Python 3\.7
 lockV2 fork/yt-dlp pr1234 win_x86_exe .+ Windows-(?:Vista|2008Server)
 lockV2 fork/yt-dlp pr9999 .+ Python 3.11
-''' % TEST_LOCKFILE_ACTUAL
+'''
 
 
 class FakeUpdater(Updater):
@@ -145,43 +165,80 @@ def test(lockfile, identifier, input_tag, expect_tag, exact=False, repo='yt-dlp/
         for lockfile in (TEST_LOCKFILE_V1, TEST_LOCKFILE_V2, TEST_LOCKFILE_ACTUAL, TEST_LOCKFILE_FORK):
             # Normal operation
             test(lockfile, 'zip Python 3.12.0', '2023.12.31', '2023.12.31')
-            test(lockfile, 'zip stable Python 3.12.0', '2023.12.31', '2023.12.31', exact=True)
-            # Python 3.6 --update should update only to its lock
+            test(lockfile, 'zip Python 3.12.0', '2023.12.31', '2023.12.31', exact=True)
+            # py2exe should never update beyond 2024.10.22
+            test(lockfile, 'py2exe Python 3.8', '2025.01.01', '2024.10.22')
+            test(lockfile, 'py2exe Python 3.8', '2025.01.01', None, exact=True)
+            # Python 3.6 --update should update only to the py3.6 lock
             test(lockfile, 'zip Python 3.6.0', '2023.11.16', '2022.08.18.36')
-            # --update-to an exact version later than the lock should return None
-            test(lockfile, 'zip stable Python 3.6.0', '2023.11.16', None, exact=True)
-            # Python 3.7 should be able to update to its lock
+            # Python 3.6 --update-to an exact version later than the py3.6 lock should return None
+            test(lockfile, 'zip Python 3.6.0', '2023.11.16', None, exact=True)
+            # Python 3.7 should be able to update to the py3.7 lock
             test(lockfile, 'zip Python 3.7.0', '2023.11.16', '2023.11.16')
-            test(lockfile, 'zip stable Python 3.7.1', '2023.11.16', '2023.11.16', exact=True)
-            # Non-win_x86_exe builds on py3.7 must be locked
+            test(lockfile, 'zip Python 3.7.1', '2023.11.16', '2023.11.16', exact=True)
+            # Non-win_x86_exe builds on py3.7 must be locked at py3.7 lock
             test(lockfile, 'zip Python 3.7.1', '2023.12.31', '2023.11.16')
-            test(lockfile, 'zip stable Python 3.7.1', '2023.12.31', None, exact=True)
-            test(  # Windows Vista w/ win_x86_exe must be locked
-                lockfile, 'win_x86_exe stable Python 3.7.9 (CPython x86 32bit) - Windows-Vista-6.0.6003-SP2',
+            test(lockfile, 'zip Python 3.7.1', '2023.12.31', None, exact=True)
+            # Python 3.8 should only update to the py3.8 lock
+            test(lockfile, 'zip Python 3.8.10', '2025.01.01', '2024.10.22')
+            test(lockfile, 'zip Python 3.8.110', '2025.01.01', None, exact=True)
+            test(  # Windows Vista w/ win_x86_exe must be locked at Vista lock
+                lockfile, 'win_x86_exe Python 3.7.9 (CPython x86 32bit) - Windows-Vista-6.0.6003-SP2',
                 '2023.12.31', '2023.11.16')
-            test(  # Windows 2008Server w/ win_x86_exe must be locked
+            test(  # Windows 2008Server w/ win_x86_exe must be locked at Vista lock
                 lockfile, 'win_x86_exe Python 3.7.9 (CPython x86 32bit) - Windows-2008Server',
                 '2023.12.31', None, exact=True)
-            test(  # Windows 7 w/ win_x86_exe py3.7 build should be able to update beyond lock
-                lockfile, 'win_x86_exe stable Python 3.7.9 (CPython x86 32bit) - Windows-7-6.1.7601-SP1',
-                '2023.12.31', '2023.12.31')
-            test(  # Windows 8.1 w/ '2008Server' in platform string should be able to update beyond lock
+            test(  # Windows 7 w/ win_x86_exe py3.7 build should be able to update beyond py3.7 lock
+                lockfile, 'win_x86_exe Python 3.7.9 (CPython x86 32bit) - Windows-7-6.1.7601-SP1',
+                '2023.12.31', '2023.12.31', exact=True)
+            test(  # Windows 7 win_x86_exe should only update to Win7 lock
+                lockfile, 'win_x86_exe Python 3.7.9 (CPython x86 32bit) - Windows-7-6.1.7601-SP1',
+                '2025.01.01', '2024.10.22')
+            test(  # Windows 2008ServerR2 win_exe should only update to Win7 lock
+                lockfile, 'win_exe Python 3.8.10 (CPython x86 32bit) - Windows-2008ServerR2',
+                '2025.12.31', '2024.10.22')
+            test(  # Windows 8.1 w/ '2008Server' in platform string should be able to update beyond py3.7 lock
                 lockfile, 'win_x86_exe Python 3.7.9 (CPython x86 32bit) - Windows-post2008Server-6.2.9200',
                 '2023.12.31', '2023.12.31', exact=True)
+            test(  # win_exe built w/Python 3.8 on Windows>=8 should be able to update beyond py3.8 lock
+                lockfile, 'win_exe Python 3.8.10 (CPython AMD64 64bit) - Windows-10-10.0.20348-SP0',
+                '2025.01.01', '2025.01.01', exact=True)
+            test(  # linux_armv7l_exe w/glibc2.7 should only update to glibc<2.31 lock
+                lockfile, 'linux_armv7l_exe Python 3.8.0 (CPython armv7l 32bit) - Linux-6.5.0-1025-azure-armv7l-with-glibc2.7',
+                '2025.01.01', '2024.10.22')
+            test(  # linux_armv7l_exe w/Python 3.8 and glibc>=2.31 should be able to update beyond py3.8 and glibc<2.31 locks
+                lockfile, 'linux_armv7l_exe Python 3.8.0 (CPython armv7l 32bit) - Linux-6.5.0-1025-azure-armv7l-with-glibc2.31',
+                '2025.01.01', '2025.01.01')
+            test(  # linux_armv7l_exe w/glibc2.30 should only update to glibc<2.31 lock
+                lockfile, 'linux_armv7l_exe Python 3.8.0 (CPython armv7l 64bit) - Linux-6.5.0-1025-azure-aarch64-with-glibc2.30 (OpenSSL',
+                '2025.01.01', '2024.10.22')
+            test(  # linux_aarch64_exe w/glibc2.17 should only update to glibc<2.31 lock
+                lockfile, 'linux_aarch64_exe Python 3.8.0 (CPython aarch64 64bit) - Linux-6.5.0-1025-azure-aarch64-with-glibc2.17',
+                '2025.01.01', '2024.10.22')
+            test(  # linux_aarch64_exe w/glibc2.40 and glibc>=2.31 should be able to update beyond py3.8 and glibc<2.31 locks
+                lockfile, 'linux_aarch64_exe Python 3.8.0 (CPython aarch64 64bit) - Linux-6.5.0-1025-azure-aarch64-with-glibc2.40',
+                '2025.01.01', '2025.01.01')
+            test(  # linux_aarch64_exe w/glibc2.3 should only update to glibc<2.31 lock
+                lockfile, 'linux_aarch64_exe Python 3.8.0 (CPython aarch64 64bit) - Linux-6.5.0-1025-azure-aarch64-with-glibc2.3 (OpenSSL',
+                '2025.01.01', '2024.10.22')
+            test(lockfile, 'darwin_legacy_exe Python 3.10.5', '2025.08.11', '2025.08.11')
+            test(lockfile, 'darwin_legacy_exe Python 3.10.5', '2025.08.11', '2025.08.11', exact=True)
+            test(lockfile, 'darwin_legacy_exe Python 3.10.5', '2025.08.12', '2025.08.11')
+            test(lockfile, 'darwin_legacy_exe Python 3.10.5', '2025.08.12', None, exact=True)
 
         # Forks can block updates to non-numeric tags rather than lock
         test(TEST_LOCKFILE_FORK, 'zip Python 3.6.3', 'pr0000', None, repo='fork/yt-dlp')
-        test(TEST_LOCKFILE_FORK, 'zip stable Python 3.7.4', 'pr0000', 'pr0000', repo='fork/yt-dlp')
-        test(TEST_LOCKFILE_FORK, 'zip stable Python 3.7.4', 'pr1234', None, repo='fork/yt-dlp')
+        test(TEST_LOCKFILE_FORK, 'zip Python 3.7.4', 'pr0000', 'pr0000', repo='fork/yt-dlp')
+        test(TEST_LOCKFILE_FORK, 'zip Python 3.7.4', 'pr1234', None, repo='fork/yt-dlp')
         test(TEST_LOCKFILE_FORK, 'zip Python 3.8.1', 'pr1234', 'pr1234', repo='fork/yt-dlp', exact=True)
         test(
-            TEST_LOCKFILE_FORK, 'win_x86_exe stable Python 3.7.9 (CPython x86 32bit) - Windows-Vista-6.0.6003-SP2',
+            TEST_LOCKFILE_FORK, 'win_x86_exe Python 3.7.9 (CPython x86 32bit) - Windows-Vista-6.0.6003-SP2',
             'pr1234', None, repo='fork/yt-dlp')
         test(
-            TEST_LOCKFILE_FORK, 'win_x86_exe stable Python 3.7.9 (CPython x86 32bit) - Windows-7-6.1.7601-SP1',
+            TEST_LOCKFILE_FORK, 'win_x86_exe Python 3.7.9 (CPython x86 32bit) - Windows-7-6.1.7601-SP1',
             '2023.12.31', '2023.12.31', repo='fork/yt-dlp')
         test(TEST_LOCKFILE_FORK, 'zip Python 3.11.2', 'pr9999', None, repo='fork/yt-dlp', exact=True)
-        test(TEST_LOCKFILE_FORK, 'zip stable Python 3.12.0', 'pr9999', 'pr9999', repo='fork/yt-dlp')
+        test(TEST_LOCKFILE_FORK, 'zip Python 3.12.0', 'pr9999', 'pr9999', repo='fork/yt-dlp')
 
     def test_query_update(self):
         ydl = FakeYDL()

test/test_utils.py

@@ -3,24 +3,25 @@
 # Allow direct execution
 import os
 import sys
-import unittest
-import warnings
-import datetime as dt
 
 sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 
 
 import contextlib
+import datetime as dt
 import io
 import itertools
 import json
+import pickle
 import subprocess
+import unittest
+import unittest.mock
+import warnings
 import xml.etree.ElementTree
 
 from yt_dlp.compat import (
     compat_etree_fromstring,
     compat_HTMLParseError,
-    compat_os_name,
 )
 from yt_dlp.utils import (
     Config,
@@ -48,7 +49,6 @@
     dfxp2srt,
     encode_base_n,
     encode_compat_str,
-    encodeFilename,
     expand_path,
     extract_attributes,
     extract_basic_auth,
@@ -68,10 +68,11 @@
     get_elements_html_by_class,
     get_elements_text_and_html_by_attribute,
     int_or_none,
-    intlist_to_bytes,
     iri_to_uri,
     is_html,
     js_to_json,
+    jwt_decode_hs256,
+    jwt_encode,
     limit_length,
     locked_file,
     lowercase_escape,
@@ -130,6 +131,7 @@
     xpath_text,
     xpath_with_ns,
 )
+from yt_dlp.utils._utils import _UnsafeExtensionError
 from yt_dlp.utils.networking import (
     HTTPHeaderDict,
     escape_rfc3986,
@@ -219,10 +221,8 @@ def test_sanitize_ids(self):
         self.assertEqual(sanitize_filename('_BD_eEpuzXw', is_id=True), '_BD_eEpuzXw')
         self.assertEqual(sanitize_filename('N0Y__7-UOdI', is_id=True), 'N0Y__7-UOdI')
 
+    @unittest.mock.patch('sys.platform', 'win32')
     def test_sanitize_path(self):
-        if sys.platform != 'win32':
-            return
-
         self.assertEqual(sanitize_path('abc'), 'abc')
         self.assertEqual(sanitize_path('abc/def'), 'abc\\def')
         self.assertEqual(sanitize_path('abc\\def'), 'abc\\def')
@@ -249,11 +249,33 @@ def test_sanitize_path(self):
         self.assertEqual(sanitize_path('abc/def...'), 'abc\\def..#')
         self.assertEqual(sanitize_path('abc.../def'), 'abc..#\\def')
         self.assertEqual(sanitize_path('abc.../def...'), 'abc..#\\def..#')
+        self.assertEqual(sanitize_path('C:\\abc:%(title)s.%(ext)s'), 'C:\\abc#%(title)s.%(ext)s')
 
-        self.assertEqual(sanitize_path('../abc'), '..\\abc')
-        self.assertEqual(sanitize_path('../../abc'), '..\\..\\abc')
-        self.assertEqual(sanitize_path('./abc'), 'abc')
-        self.assertEqual(sanitize_path('./../abc'), '..\\abc')
+        # Check with nt._path_normpath if available
+        try:
+            from nt import _path_normpath as nt_path_normpath
+        except ImportError:
+            nt_path_normpath = None
+
+        for test, expected in [
+            ('C:\\', 'C:\\'),
+            ('../abc', '..\\abc'),
+            ('../../abc', '..\\..\\abc'),
+            ('./abc', 'abc'),
+            ('./../abc', '..\\abc'),
+            ('\\abc', '\\abc'),
+            ('C:abc', 'C:abc'),
+            ('C:abc\\..\\', 'C:'),
+            ('C:abc\\..\\def\\..\\..\\', 'C:..'),
+            ('C:\\abc\\xyz///..\\def\\', 'C:\\abc\\def'),
+            ('abc/../', '.'),
+            ('./abc/../', '.'),
+        ]:
+            result = sanitize_path(test)
+            assert result == expected, f'{test} was incorrectly resolved'
+            assert result == sanitize_path(result), f'{test} changed after sanitizing again'
+            if nt_path_normpath:
+                assert result == nt_path_normpath(test), f'{test} does not match nt._path_normpath'
 
     def test_sanitize_url(self):
         self.assertEqual(sanitize_url('//foo.bar'), 'http://foo.bar')
@@ -276,11 +298,18 @@ def env(var):
             self.assertEqual(expand_path(env('HOME')), os.getenv('HOME'))
             self.assertEqual(expand_path('~'), os.getenv('HOME'))
             self.assertEqual(
-                expand_path('~/%s' % env('yt_dlp_EXPATH_PATH')),
-                '%s/expanded' % os.getenv('HOME'))
+                expand_path('~/{}'.format(env('yt_dlp_EXPATH_PATH'))),
+                '{}/expanded'.format(os.getenv('HOME')))
         finally:
             os.environ['HOME'] = old_home or ''
 
+    _uncommon_extensions = [
+        ('exe', 'abc.exe.ext'),
+        ('de', 'abc.de.ext'),
+        ('../.mp4', None),
+        ('..\\.mp4', None),
+    ]
+
     def test_prepend_extension(self):
         self.assertEqual(prepend_extension('abc.ext', 'temp'), 'abc.temp.ext')
         self.assertEqual(prepend_extension('abc.ext', 'temp', 'ext'), 'abc.temp.ext')
@@ -289,6 +318,19 @@ def test_prepend_extension(self):
         self.assertEqual(prepend_extension('.abc', 'temp'), '.abc.temp')
         self.assertEqual(prepend_extension('.abc.ext', 'temp'), '.abc.temp.ext')
 
+        # Test uncommon extensions
+        self.assertEqual(prepend_extension('abc.ext', 'bin'), 'abc.bin.ext')
+        for ext, result in self._uncommon_extensions:
+            with self.assertRaises(_UnsafeExtensionError):
+                prepend_extension('abc', ext)
+            if result:
+                self.assertEqual(prepend_extension('abc.ext', ext, 'ext'), result)
+            else:
+                with self.assertRaises(_UnsafeExtensionError):
+                    prepend_extension('abc.ext', ext, 'ext')
+            with self.assertRaises(_UnsafeExtensionError):
+                prepend_extension('abc.unexpected_ext', ext, 'ext')
+
     def test_replace_extension(self):
         self.assertEqual(replace_extension('abc.ext', 'temp'), 'abc.temp')
         self.assertEqual(replace_extension('abc.ext', 'temp', 'ext'), 'abc.temp')
@@ -297,6 +339,16 @@ def test_replace_extension(self):
         self.assertEqual(replace_extension('.abc', 'temp'), '.abc.temp')
         self.assertEqual(replace_extension('.abc.ext', 'temp'), '.abc.temp')
 
+        # Test uncommon extensions
+        self.assertEqual(replace_extension('abc.ext', 'bin'), 'abc.unknown_video')
+        for ext, _ in self._uncommon_extensions:
+            with self.assertRaises(_UnsafeExtensionError):
+                replace_extension('abc', ext)
+            with self.assertRaises(_UnsafeExtensionError):
+                replace_extension('abc.ext', ext, 'ext')
+            with self.assertRaises(_UnsafeExtensionError):
+                replace_extension('abc.unexpected_ext', ext, 'ext')
+
     def test_subtitles_filename(self):
         self.assertEqual(subtitles_filename('abc.ext', 'en', 'vtt'), 'abc.en.vtt')
         self.assertEqual(subtitles_filename('abc.ext', 'en', 'vtt', 'ext'), 'abc.en.vtt')
@@ -306,11 +358,13 @@ def test_remove_start(self):
         self.assertEqual(remove_start(None, 'A - '), None)
         self.assertEqual(remove_start('A - B', 'A - '), 'B')
         self.assertEqual(remove_start('B - A', 'A - '), 'B - A')
+        self.assertEqual(remove_start('non-empty', ''), 'non-empty')
 
     def test_remove_end(self):
         self.assertEqual(remove_end(None, ' - B'), None)
         self.assertEqual(remove_end('A - B', ' - B'), 'A')
         self.assertEqual(remove_end('B - A', ' - B'), 'B - A')
+        self.assertEqual(remove_end('non-empty', ''), 'non-empty')
 
     def test_remove_quotes(self):
         self.assertEqual(remove_quotes(None), None)
@@ -356,12 +410,12 @@ def test_datetime_from_str(self):
         self.assertEqual(datetime_from_str('now+23hours', precision='hour'), datetime_from_str('now+23hours', precision='auto'))
 
     def test_daterange(self):
-        _20century = DateRange("19000101", "20000101")
-        self.assertFalse("17890714" in _20century)
-        _ac = DateRange("00010101")
-        self.assertTrue("19690721" in _ac)
-        _firstmilenium = DateRange(end="10000101")
-        self.assertTrue("07110427" in _firstmilenium)
+        _20century = DateRange('19000101', '20000101')
+        self.assertFalse('17890714' in _20century)
+        _ac = DateRange('00010101')
+        self.assertTrue('19690721' in _ac)
+        _firstmilenium = DateRange(end='10000101')
+        self.assertTrue('07110427' in _firstmilenium)
 
     def test_unified_dates(self):
         self.assertEqual(unified_strdate('December 21, 2010'), '20101221')
@@ -413,6 +467,8 @@ def test_unified_timestamps(self):
         self.assertEqual(unified_timestamp('Sep 11, 2013 | 5:49 AM'), 1378878540)
         self.assertEqual(unified_timestamp('December 15, 2017 at 7:49 am'), 1513324140)
         self.assertEqual(unified_timestamp('2018-03-14T08:32:43.1493874+00:00'), 1521016363)
+        self.assertEqual(unified_timestamp('Sunday, 26 Nov 2006, 19:00'), 1164567600)
+        self.assertEqual(unified_timestamp('wed, aug 16, 2008, 12:00pm'), 1218931200)
 
         self.assertEqual(unified_timestamp('December 31 1969 20:00:01 EDT'), 1)
         self.assertEqual(unified_timestamp('Wednesday 31 December 1969 18:01:26 MDT'), 86)
@@ -506,7 +562,7 @@ def test_xpath_attr(self):
         self.assertRaises(ExtractorError, xpath_attr, doc, 'div/p', 'y', fatal=True)
 
     def test_smuggle_url(self):
-        data = {"ö": "ö", "abc": [3]}
+        data = {'ö': 'ö', 'abc': [3]}
         url = 'https://foo.bar/baz?x=y#a'
         smug_url = smuggle_url(url, data)
         unsmug_url, unsmug_data = unsmuggle_url(smug_url)
@@ -524,10 +580,10 @@ def test_smuggle_url(self):
         self.assertEqual(res_data, {'a': 'b', 'c': 'd'})
 
     def test_shell_quote(self):
-        args = ['ffmpeg', '-i', encodeFilename('ñ€ß\'.mp4')]
+        args = ['ffmpeg', '-i', 'ñ€ß\'.mp4']
         self.assertEqual(
             shell_quote(args),
-            """ffmpeg -i 'ñ€ß'"'"'.mp4'""" if compat_os_name != 'nt' else '''ffmpeg -i "ñ€ß'.mp4"''')
+            """ffmpeg -i 'ñ€ß'"'"'.mp4'""" if os.name != 'nt' else '''ffmpeg -i "ñ€ß'.mp4"''')
 
     def test_float_or_none(self):
         self.assertEqual(float_or_none('42.42'), 42.42)
@@ -605,6 +661,8 @@ def test_url_or_none(self):
         self.assertEqual(url_or_none('mms://foo.de'), 'mms://foo.de')
         self.assertEqual(url_or_none('rtspu://foo.de'), 'rtspu://foo.de')
         self.assertEqual(url_or_none('ftps://foo.de'), 'ftps://foo.de')
+        self.assertEqual(url_or_none('ws://foo.de'), 'ws://foo.de')
+        self.assertEqual(url_or_none('wss://foo.de'), 'wss://foo.de')
 
     def test_parse_age_limit(self):
         self.assertEqual(parse_age_limit(None), None)
@@ -784,7 +842,7 @@ def test_parse_iso8601(self):
     def test_strip_jsonp(self):
         stripped = strip_jsonp('cb ([ {"id":"532cb",\n\n\n"x":\n3}\n]\n);')
         d = json.loads(stripped)
-        self.assertEqual(d, [{"id": "532cb", "x": 3}])
+        self.assertEqual(d, [{'id': '532cb', 'x': 3}])
 
         stripped = strip_jsonp('parseMetadata({"STATUS":"OK"})\n\n\n//epc')
         d = json.loads(stripped)
@@ -888,6 +946,11 @@ def test_parse_codecs(self):
             'acodec': 'none',
             'dynamic_range': 'HDR10',
         })
+        self.assertEqual(parse_codecs('vp09.02.50.10.01.09.18.09.00'), {
+            'vcodec': 'vp09.02.50.10.01.09.18.09.00',
+            'acodec': 'none',
+            'dynamic_range': 'HDR10',
+        })
         self.assertEqual(parse_codecs('av01.0.12M.10.0.110.09.16.09.0'), {
             'vcodec': 'av01.0.12M.10.0.110.09.16.09.0',
             'acodec': 'none',
@@ -898,6 +961,11 @@ def test_parse_codecs(self):
             'acodec': 'none',
             'dynamic_range': 'DV',
         })
+        self.assertEqual(parse_codecs('fLaC'), {
+            'vcodec': 'none',
+            'acodec': 'flac',
+            'dynamic_range': None,
+        })
         self.assertEqual(parse_codecs('theora, vorbis'), {
             'vcodec': 'theora',
             'acodec': 'vorbis',
@@ -922,19 +990,19 @@ def test_escape_rfc3986(self):
     def test_normalize_url(self):
         self.assertEqual(
             normalize_url('http://wowza.imust.org/srv/vod/telemb/new/UPLOAD/UPLOAD/20224_IncendieHavré_FD.mp4'),
-            'http://wowza.imust.org/srv/vod/telemb/new/UPLOAD/UPLOAD/20224_IncendieHavre%CC%81_FD.mp4'
+            'http://wowza.imust.org/srv/vod/telemb/new/UPLOAD/UPLOAD/20224_IncendieHavre%CC%81_FD.mp4',
         )
         self.assertEqual(
             normalize_url('http://www.ardmediathek.de/tv/Sturm-der-Liebe/Folge-2036-Zu-Mann-und-Frau-erklärt/Das-Erste/Video?documentId=22673108&bcastId=5290'),
-            'http://www.ardmediathek.de/tv/Sturm-der-Liebe/Folge-2036-Zu-Mann-und-Frau-erkl%C3%A4rt/Das-Erste/Video?documentId=22673108&bcastId=5290'
+            'http://www.ardmediathek.de/tv/Sturm-der-Liebe/Folge-2036-Zu-Mann-und-Frau-erkl%C3%A4rt/Das-Erste/Video?documentId=22673108&bcastId=5290',
         )
         self.assertEqual(
             normalize_url('http://тест.рф/фрагмент'),
-            'http://xn--e1aybc.xn--p1ai/%D1%84%D1%80%D0%B0%D0%B3%D0%BC%D0%B5%D0%BD%D1%82'
+            'http://xn--e1aybc.xn--p1ai/%D1%84%D1%80%D0%B0%D0%B3%D0%BC%D0%B5%D0%BD%D1%82',
         )
         self.assertEqual(
             normalize_url('http://тест.рф/абв?абв=абв#абв'),
-            'http://xn--e1aybc.xn--p1ai/%D0%B0%D0%B1%D0%B2?%D0%B0%D0%B1%D0%B2=%D0%B0%D0%B1%D0%B2#%D0%B0%D0%B1%D0%B2'
+            'http://xn--e1aybc.xn--p1ai/%D0%B0%D0%B1%D0%B2?%D0%B0%D0%B1%D0%B2=%D0%B0%D0%B1%D0%B2#%D0%B0%D0%B1%D0%B2',
         )
         self.assertEqual(normalize_url('http://vimeo.com/56015672#at=0'), 'http://vimeo.com/56015672#at=0')
 
@@ -979,7 +1047,7 @@ def test_js_to_json_vars_strings(self):
                     'e': 'false',
                     'f': '"false"',
                     'g': 'var',
-                }
+                },
             )),
             {
                 'null': None,
@@ -988,8 +1056,8 @@ def test_js_to_json_vars_strings(self):
                 'trueStr': 'true',
                 'false': False,
                 'falseStr': 'false',
-                'unresolvedVar': 'var'
-            }
+                'unresolvedVar': 'var',
+            },
         )
 
         self.assertDictEqual(
@@ -1005,14 +1073,14 @@ def test_js_to_json_vars_strings(self):
                     'b': '"123"',
                     'c': '1.23',
                     'd': '"1.23"',
-                }
+                },
             )),
             {
                 'int': 123,
                 'intStr': '123',
                 'float': 1.23,
                 'floatStr': '1.23',
-            }
+            },
         )
 
         self.assertDictEqual(
@@ -1028,14 +1096,14 @@ def test_js_to_json_vars_strings(self):
                     'b': '"{}"',
                     'c': '[]',
                     'd': '"[]"',
-                }
+                },
             )),
             {
                 'object': {},
                 'objectStr': '{}',
                 'array': [],
                 'arrayStr': '[]',
-            }
+            },
         )
 
     def test_js_to_json_realworld(self):
@@ -1081,7 +1149,7 @@ def test_js_to_json_realworld(self):
 
     def test_js_to_json_edgecases(self):
         on = js_to_json("{abc_def:'1\\'\\\\2\\\\\\'3\"4'}")
-        self.assertEqual(json.loads(on), {"abc_def": "1'\\2\\'3\"4"})
+        self.assertEqual(json.loads(on), {'abc_def': "1'\\2\\'3\"4"})
 
         on = js_to_json('{"abc": true}')
         self.assertEqual(json.loads(on), {'abc': True})
@@ -1113,9 +1181,9 @@ def test_js_to_json_edgecases(self):
             'c': 0,
             'd': 42.42,
             'e': [],
-            'f': "abc",
-            'g': "",
-            '42': 42
+            'f': 'abc',
+            'g': '',
+            '42': 42,
         })
 
         on = js_to_json('["abc", "def",]')
@@ -1196,6 +1264,7 @@ def test_js_to_json_edgecases(self):
     def test_js_to_json_malformed(self):
         self.assertEqual(js_to_json('42a1'), '42"a1"')
         self.assertEqual(js_to_json('42a-1'), '42"a"-1')
+        self.assertEqual(js_to_json('{a: `${e("")}`}'), '{"a": "\\"e\\"(\\"\\")"}')
 
     def test_js_to_json_template_literal(self):
         self.assertEqual(js_to_json('`Hello ${name}`', {'name': '"world"'}), '"Hello world"')
@@ -1209,8 +1278,8 @@ def test_js_to_json_common_constructors(self):
         self.assertEqual(json.loads(js_to_json('Array(5, 10)')), [5, 10])
         self.assertEqual(json.loads(js_to_json('new Array(15,5)')), [15, 5])
         self.assertEqual(json.loads(js_to_json('new Map([Array(5, 10),new Array(15,5)])')), {'5': 10, '15': 5})
-        self.assertEqual(json.loads(js_to_json('new Date("123")')), "123")
-        self.assertEqual(json.loads(js_to_json('new Date(\'2023-10-19\')')), "2023-10-19")
+        self.assertEqual(json.loads(js_to_json('new Date("123")')), '123')
+        self.assertEqual(json.loads(js_to_json('new Date(\'2023-10-19\')')), '2023-10-19')
 
     def test_extract_attributes(self):
         self.assertEqual(extract_attributes('<e x="y">'), {'x': 'y'})
@@ -1257,15 +1326,10 @@ def test_clean_html(self):
         self.assertEqual(clean_html('a:\n   "b"'), 'a: "b"')
         self.assertEqual(clean_html('a<br>\xa0b'), 'a\nb')
 
-    def test_intlist_to_bytes(self):
-        self.assertEqual(
-            intlist_to_bytes([0, 1, 127, 128, 255]),
-            b'\x00\x01\x7f\x80\xff')
-
     def test_args_to_str(self):
         self.assertEqual(
             args_to_str(['foo', 'ba/r', '-baz', '2 be', '']),
-            'foo ba/r -baz \'2 be\' \'\'' if compat_os_name != 'nt' else 'foo ba/r -baz "2 be" ""'
+            'foo ba/r -baz \'2 be\' \'\'' if os.name != 'nt' else 'foo ba/r -baz "2 be" ""',
         )
 
     def test_parse_filesize(self):
@@ -1311,6 +1375,7 @@ def test_parse_resolution(self):
         self.assertEqual(parse_resolution('pre_1920x1080_post'), {'width': 1920, 'height': 1080})
         self.assertEqual(parse_resolution('ep1x2'), {})
         self.assertEqual(parse_resolution('1920, 1080'), {'width': 1920, 'height': 1080})
+        self.assertEqual(parse_resolution('1920w', lenient=True), {'width': 1920})
 
     def test_parse_bitrate(self):
         self.assertEqual(parse_bitrate(None), None)
@@ -1348,10 +1413,10 @@ def test_is_html(self):
         self.assertTrue(is_html(  # UTF-8 with BOM
             b'\xef\xbb\xbf<!DOCTYPE foo>\xaaa'))
         self.assertTrue(is_html(  # UTF-16-LE
-            b'\xff\xfe<\x00h\x00t\x00m\x00l\x00>\x00\xe4\x00'
+            b'\xff\xfe<\x00h\x00t\x00m\x00l\x00>\x00\xe4\x00',
         ))
         self.assertTrue(is_html(  # UTF-16-BE
-            b'\xfe\xff\x00<\x00h\x00t\x00m\x00l\x00>\x00\xe4'
+            b'\xfe\xff\x00<\x00h\x00t\x00m\x00l\x00>\x00\xe4',
         ))
         self.assertTrue(is_html(  # UTF-32-BE
             b'\x00\x00\xFE\xFF\x00\x00\x00<\x00\x00\x00h\x00\x00\x00t\x00\x00\x00m\x00\x00\x00l\x00\x00\x00>\x00\x00\x00\xe4'))
@@ -1935,7 +2000,7 @@ def test_locked_file(self):
                             with locked_file(FILE, test_mode, False):
                                 pass
                         except (BlockingIOError, PermissionError):
-                            if not testing_write:  # FIXME
+                            if not testing_write:  # FIXME: blocked read access
                                 print(f'Known issue: Exclusive lock ({lock_mode}) blocks read access ({test_mode})')
                                 continue
                             self.assertTrue(testing_write, f'{test_mode} is blocked by {lock_mode}')
@@ -2003,7 +2068,7 @@ def total(*x, **kwargs):
                          msg='int fn with expected_type int should give int')
         self.assertEqual(try_call(lambda: 1, expected_type=dict), None,
                          msg='int fn with wrong expected_type should give None')
-        self.assertEqual(try_call(total, args=(0, 1, 0, ), expected_type=int), 1,
+        self.assertEqual(try_call(total, args=(0, 1, 0), expected_type=int), 1,
                          msg='fn should accept arglist')
         self.assertEqual(try_call(total, kwargs={'a': 0, 'b': 1, 'c': 0}, expected_type=int), 1,
                          msg='fn should accept kwargs')
@@ -2024,21 +2089,26 @@ def test_http_header_dict(self):
         headers = HTTPHeaderDict()
         headers['ytdl-test'] = b'0'
         self.assertEqual(list(headers.items()), [('Ytdl-Test', '0')])
+        self.assertEqual(list(headers.sensitive().items()), [('ytdl-test', '0')])
         headers['ytdl-test'] = 1
         self.assertEqual(list(headers.items()), [('Ytdl-Test', '1')])
+        self.assertEqual(list(headers.sensitive().items()), [('ytdl-test', '1')])
         headers['Ytdl-test'] = '2'
         self.assertEqual(list(headers.items()), [('Ytdl-Test', '2')])
+        self.assertEqual(list(headers.sensitive().items()), [('Ytdl-test', '2')])
         self.assertTrue('ytDl-Test' in headers)
         self.assertEqual(str(headers), str(dict(headers)))
         self.assertEqual(repr(headers), str(dict(headers)))
 
         headers.update({'X-dlp': 'data'})
         self.assertEqual(set(headers.items()), {('Ytdl-Test', '2'), ('X-Dlp', 'data')})
+        self.assertEqual(set(headers.sensitive().items()), {('Ytdl-test', '2'), ('X-dlp', 'data')})
         self.assertEqual(dict(headers), {'Ytdl-Test': '2', 'X-Dlp': 'data'})
         self.assertEqual(len(headers), 2)
         self.assertEqual(headers.copy(), headers)
-        headers2 = HTTPHeaderDict({'X-dlp': 'data3'}, **headers, **{'X-dlp': 'data2'})
+        headers2 = HTTPHeaderDict({'X-dlp': 'data3'}, headers, **{'X-dlP': 'data2'})
         self.assertEqual(set(headers2.items()), {('Ytdl-Test', '2'), ('X-Dlp', 'data2')})
+        self.assertEqual(set(headers2.sensitive().items()), {('Ytdl-test', '2'), ('X-dlP', 'data2')})
         self.assertEqual(len(headers2), 2)
         headers2.clear()
         self.assertEqual(len(headers2), 0)
@@ -2046,16 +2116,23 @@ def test_http_header_dict(self):
         # ensure we prefer latter headers
         headers3 = HTTPHeaderDict({'Ytdl-TeSt': 1}, {'Ytdl-test': 2})
         self.assertEqual(set(headers3.items()), {('Ytdl-Test', '2')})
+        self.assertEqual(set(headers3.sensitive().items()), {('Ytdl-test', '2')})
         del headers3['ytdl-tesT']
         self.assertEqual(dict(headers3), {})
 
         headers4 = HTTPHeaderDict({'ytdl-test': 'data;'})
         self.assertEqual(set(headers4.items()), {('Ytdl-Test', 'data;')})
+        self.assertEqual(set(headers4.sensitive().items()), {('ytdl-test', 'data;')})
 
         # common mistake: strip whitespace from values
         # https://github.com/yt-dlp/yt-dlp/issues/8729
         headers5 = HTTPHeaderDict({'ytdl-test': ' data; '})
         self.assertEqual(set(headers5.items()), {('Ytdl-Test', 'data;')})
+        self.assertEqual(set(headers5.sensitive().items()), {('ytdl-test', 'data;')})
+
+        # test if picklable
+        headers6 = HTTPHeaderDict(a=1, b=2)
+        self.assertEqual(pickle.loads(pickle.dumps(headers6)), headers6)
 
     def test_extract_basic_auth(self):
         assert extract_basic_auth('http://:foo.bar') == ('http://:foo.bar', None)
@@ -2065,7 +2142,7 @@ def test_extract_basic_auth(self):
         assert extract_basic_auth('http://user:@foo.bar') == ('http://foo.bar', 'Basic dXNlcjo=')
         assert extract_basic_auth('http://user:pass@foo.bar') == ('http://foo.bar', 'Basic dXNlcjpwYXNz')
 
-    @unittest.skipUnless(compat_os_name == 'nt', 'Only relevant on Windows')
+    @unittest.skipUnless(os.name == 'nt', 'Only relevant on Windows')
     def test_windows_escaping(self):
         tests = [
             'test"&',
@@ -2099,6 +2176,47 @@ def run_shell(args):
             assert run_shell(args) == expected
             assert run_shell(shell_quote(args, shell=True)) == expected
 
+    def test_partial_application(self):
+        assert callable(int_or_none(scale=10)), 'missing positional parameter should apply partially'
+        assert int_or_none(10, scale=0.1) == 100, 'positionally passed argument should call function'
+        assert int_or_none(v=10) == 10, 'keyword passed positional should call function'
+        assert int_or_none(scale=0.1)(10) == 100, 'call after partial application should call the function'
+
+    _JWT_KEY = '12345678'
+    _JWT_HEADERS_1 = {'a': 'b'}
+    _JWT_HEADERS_2 = {'typ': 'JWT', 'alg': 'HS256'}
+    _JWT_HEADERS_3 = {'typ': 'JWT', 'alg': 'RS256'}
+    _JWT_HEADERS_4 = {'c': 'd', 'alg': 'ES256'}
+    _JWT_DECODED = {
+        'foo': 'bar',
+        'qux': 'baz',
+    }
+    _JWT_SIMPLE = 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJmb28iOiJiYXIiLCJxdXgiOiJiYXoifQ.fKojvTWqnjNTbsdoDTmYNc4tgYAG3h_SWRzM77iLH0U'
+    _JWT_WITH_EXTRA_HEADERS = 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCIsImEiOiJiIn0.eyJmb28iOiJiYXIiLCJxdXgiOiJiYXoifQ.Ia91-B77yasfYM7jsB6iVKLew-3rO6ITjNmjWUVXCvQ'
+    _JWT_WITH_REORDERED_HEADERS = 'eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJmb28iOiJiYXIiLCJxdXgiOiJiYXoifQ.slg-7COta5VOfB36p3tqV4MGPV6TTA_ouGnD48UEVq4'
+    _JWT_WITH_REORDERED_HEADERS_AND_RS256_ALG = 'eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiJ9.eyJmb28iOiJiYXIiLCJxdXgiOiJiYXoifQ.XWp496oVgQnoits0OOocutdjxoaQwn4GUWWxUsKENPM'
+    _JWT_WITH_EXTRA_HEADERS_AND_ES256_ALG = 'eyJhbGciOiJFUzI1NiIsInR5cCI6IkpXVCIsImMiOiJkIn0.eyJmb28iOiJiYXIiLCJxdXgiOiJiYXoifQ.oM_tc7IkfrwkoRh43rFFE1wOi3J3mQGwx7_lMyKQqDg'
+
+    def test_jwt_encode(self):
+        def test(expected, headers={}):
+            self.assertEqual(jwt_encode(self._JWT_DECODED, self._JWT_KEY, headers=headers), expected)
+
+        test(self._JWT_SIMPLE)
+        test(self._JWT_WITH_EXTRA_HEADERS, headers=self._JWT_HEADERS_1)
+        test(self._JWT_WITH_REORDERED_HEADERS, headers=self._JWT_HEADERS_2)
+        test(self._JWT_WITH_REORDERED_HEADERS_AND_RS256_ALG, headers=self._JWT_HEADERS_3)
+        test(self._JWT_WITH_EXTRA_HEADERS_AND_ES256_ALG, headers=self._JWT_HEADERS_4)
+
+    def test_jwt_decode_hs256(self):
+        def test(inp):
+            self.assertEqual(jwt_decode_hs256(inp), self._JWT_DECODED)
+
+        test(self._JWT_SIMPLE)
+        test(self._JWT_WITH_EXTRA_HEADERS)
+        test(self._JWT_WITH_REORDERED_HEADERS)
+        test(self._JWT_WITH_REORDERED_HEADERS_AND_RS256_ALG)
+        test(self._JWT_WITH_EXTRA_HEADERS_AND_ES256_ALG)
+
 
 if __name__ == '__main__':
     unittest.main()

test/test_websockets.py

@@ -44,7 +44,7 @@ def websocket_handler(websocket):
                 return websocket.send('2')
         elif isinstance(message, str):
             if message == 'headers':
-                return websocket.send(json.dumps(dict(websocket.request.headers)))
+                return websocket.send(json.dumps(dict(websocket.request.headers.raw_items())))
             elif message == 'path':
                 return websocket.send(websocket.request.path)
             elif message == 'source_address':
@@ -61,6 +61,10 @@ def process_request(self, request):
             return websockets.http11.Response(
                 status.value, status.phrase, websockets.datastructures.Headers([('Location', '/')]), b'')
         return self.protocol.reject(status.value, status.phrase)
+    elif request.path.startswith('/get_cookie'):
+        response = self.protocol.accept(request)
+        response.headers['Set-Cookie'] = 'test=ytdlp'
+        return response
     return self.protocol.accept(request)
 
 
@@ -84,7 +88,7 @@ def create_wss_websocket_server():
     certfn = os.path.join(TEST_DIR, 'testcert.pem')
     sslctx = ssl.SSLContext(ssl.PROTOCOL_TLS_SERVER)
     sslctx.load_cert_chain(certfn, None)
-    return create_websocket_server(ssl_context=sslctx)
+    return create_websocket_server(ssl=sslctx)
 
 
 MTLS_CERT_DIR = os.path.join(TEST_DIR, 'testdata', 'certificate')
@@ -99,7 +103,16 @@ def create_mtls_wss_websocket_server():
     sslctx.load_verify_locations(cafile=cacertfn)
     sslctx.load_cert_chain(certfn, None)
 
-    return create_websocket_server(ssl_context=sslctx)
+    return create_websocket_server(ssl=sslctx)
+
+
+def create_legacy_wss_websocket_server():
+    certfn = os.path.join(TEST_DIR, 'testcert.pem')
+    sslctx = ssl.SSLContext(ssl.PROTOCOL_TLS_SERVER)
+    sslctx.maximum_version = ssl.TLSVersion.TLSv1_2
+    sslctx.set_ciphers('SHA1:AESCCM:aDSS:eNULL:aNULL')
+    sslctx.load_cert_chain(certfn, None)
+    return create_websocket_server(ssl=sslctx)
 
 
 def ws_validate_and_send(rh, req):
@@ -126,12 +139,15 @@ def setup_class(cls):
         cls.wss_thread, cls.wss_port = create_wss_websocket_server()
         cls.wss_base_url = f'wss://127.0.0.1:{cls.wss_port}'
 
-        cls.bad_wss_thread, cls.bad_wss_port = create_websocket_server(ssl_context=ssl.SSLContext(ssl.PROTOCOL_TLS_SERVER))
+        cls.bad_wss_thread, cls.bad_wss_port = create_websocket_server(ssl=ssl.SSLContext(ssl.PROTOCOL_TLS_SERVER))
         cls.bad_wss_host = f'wss://127.0.0.1:{cls.bad_wss_port}'
 
         cls.mtls_wss_thread, cls.mtls_wss_port = create_mtls_wss_websocket_server()
         cls.mtls_wss_base_url = f'wss://127.0.0.1:{cls.mtls_wss_port}'
 
+        cls.legacy_wss_thread, cls.legacy_wss_port = create_legacy_wss_websocket_server()
+        cls.legacy_wss_host = f'wss://127.0.0.1:{cls.legacy_wss_port}'
+
     def test_basic_websockets(self, handler):
         with handler() as rh:
             ws = ws_validate_and_send(rh, Request(self.ws_base_url))
@@ -166,6 +182,22 @@ def test_ssl_error(self, handler):
                 ws_validate_and_send(rh, Request(self.bad_wss_host))
             assert not issubclass(exc_info.type, CertificateVerifyError)
 
+    def test_legacy_ssl_extension(self, handler):
+        with handler(verify=False) as rh:
+            ws = ws_validate_and_send(rh, Request(self.legacy_wss_host, extensions={'legacy_ssl': True}))
+            assert ws.status == 101
+            ws.close()
+
+            # Ensure only applies to request extension
+            with pytest.raises(SSLError):
+                ws_validate_and_send(rh, Request(self.legacy_wss_host))
+
+    def test_legacy_ssl_support(self, handler):
+        with handler(verify=False, legacy_ssl_support=True) as rh:
+            ws = ws_validate_and_send(rh, Request(self.legacy_wss_host))
+            assert ws.status == 101
+            ws.close()
+
     @pytest.mark.parametrize('path,expected', [
         # Unicode characters should be encoded with uppercase percent-encoding
         ('/中文', '/%E4%B8%AD%E6%96%87'),
@@ -234,18 +266,44 @@ def test_cookies(self, handler):
         with handler(cookiejar=cookiejar) as rh:
             ws = ws_validate_and_send(rh, Request(self.ws_base_url))
             ws.send('headers')
-            assert json.loads(ws.recv())['cookie'] == 'test=ytdlp'
+            assert HTTPHeaderDict(json.loads(ws.recv()))['cookie'] == 'test=ytdlp'
             ws.close()
 
         with handler() as rh:
             ws = ws_validate_and_send(rh, Request(self.ws_base_url))
             ws.send('headers')
-            assert 'cookie' not in json.loads(ws.recv())
+            assert 'cookie' not in HTTPHeaderDict(json.loads(ws.recv()))
             ws.close()
 
             ws = ws_validate_and_send(rh, Request(self.ws_base_url, extensions={'cookiejar': cookiejar}))
             ws.send('headers')
-            assert json.loads(ws.recv())['cookie'] == 'test=ytdlp'
+            assert HTTPHeaderDict(json.loads(ws.recv()))['cookie'] == 'test=ytdlp'
+            ws.close()
+
+    @pytest.mark.skip_handler('Websockets', 'Set-Cookie not supported by websockets')
+    def test_cookie_sync_only_cookiejar(self, handler):
+        # Ensure that cookies are ONLY being handled by the cookiejar
+        with handler() as rh:
+            ws_validate_and_send(rh, Request(f'{self.ws_base_url}/get_cookie', extensions={'cookiejar': YoutubeDLCookieJar()}))
+            ws = ws_validate_and_send(rh, Request(self.ws_base_url, extensions={'cookiejar': YoutubeDLCookieJar()}))
+            ws.send('headers')
+            assert 'cookie' not in HTTPHeaderDict(json.loads(ws.recv()))
+            ws.close()
+
+    @pytest.mark.skip_handler('Websockets', 'Set-Cookie not supported by websockets')
+    def test_cookie_sync_delete_cookie(self, handler):
+        # Ensure that cookies are ONLY being handled by the cookiejar
+        cookiejar = YoutubeDLCookieJar()
+        with handler(verbose=True, cookiejar=cookiejar) as rh:
+            ws_validate_and_send(rh, Request(f'{self.ws_base_url}/get_cookie'))
+            ws = ws_validate_and_send(rh, Request(self.ws_base_url))
+            ws.send('headers')
+            assert HTTPHeaderDict(json.loads(ws.recv()))['cookie'] == 'test=ytdlp'
+            ws.close()
+            cookiejar.clear_session_cookies()
+            ws = ws_validate_and_send(rh, Request(self.ws_base_url))
+            ws.send('headers')
+            assert 'cookie' not in HTTPHeaderDict(json.loads(ws.recv()))
             ws.close()
 
     def test_source_address(self, handler):
@@ -283,6 +341,14 @@ def test_request_headers(self, handler):
             assert headers['test3'] == 'test3'
             ws.close()
 
+    def test_keep_header_casing(self, handler):
+        with handler(headers=HTTPHeaderDict({'x-TeSt1': 'test'})) as rh:
+            ws = ws_validate_and_send(rh, Request(self.ws_base_url, headers={'x-TeSt2': 'test'}, extensions={'keep_header_casing': True}))
+            ws.send('headers')
+            headers = json.loads(ws.recv())
+            assert 'x-TeSt1' in headers
+            assert 'x-TeSt2' in headers
+
     @pytest.mark.parametrize('client_cert', (
         {'client_certificate': os.path.join(MTLS_CERT_DIR, 'clientwithkey.crt')},
         {
@@ -297,14 +363,14 @@ def test_request_headers(self, handler):
             'client_certificate': os.path.join(MTLS_CERT_DIR, 'client.crt'),
             'client_certificate_key': os.path.join(MTLS_CERT_DIR, 'clientencrypted.key'),
             'client_certificate_password': 'foobar',
-        }
+        },
     ))
     def test_mtls(self, handler, client_cert):
         with handler(
             # Disable client-side validation of unacceptable self-signed testcert.pem
             # The test is of a check on the server side, so unaffected
             verify=False,
-            client_cert=client_cert
+            client_cert=client_cert,
         ) as rh:
             ws_validate_and_send(rh, Request(self.mtls_wss_base_url)).close()
 

test/test_youtube_misc.py

@@ -13,7 +13,7 @@
 
 class TestYoutubeMisc(unittest.TestCase):
     def test_youtube_extract(self):
-        assertExtractId = lambda url, id: self.assertEqual(YoutubeIE.extract_id(url), id)
+        assertExtractId = lambda url, video_id: self.assertEqual(YoutubeIE.extract_id(url), video_id)
         assertExtractId('http://www.youtube.com/watch?&v=BaW_jenozKc', 'BaW_jenozKc')
         assertExtractId('https://www.youtube.com/watch?&v=BaW_jenozKc', 'BaW_jenozKc')
         assertExtractId('https://www.youtube.com/watch?feature=player_embedded&v=BaW_jenozKc', 'BaW_jenozKc')

test/test_youtube_signature.py

@@ -46,17 +46,17 @@
     (
         'https://s.ytimg.com/yts/jsbin/html5player-en_US-vflBb0OQx.js',
         84,
-        '123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQ0STUVWXYZ!"#$%&\'()*+,@./:;<=>'
+        '123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQ0STUVWXYZ!"#$%&\'()*+,@./:;<=>',
     ),
     (
         'https://s.ytimg.com/yts/jsbin/html5player-en_US-vfl9FYC6l.js',
         83,
-        '123456789abcdefghijklmnopqr0tuvwxyzABCDETGHIJKLMNOPQRS>UVWXYZ!"#$%&\'()*+,-./:;<=F'
+        '123456789abcdefghijklmnopqr0tuvwxyzABCDETGHIJKLMNOPQRS>UVWXYZ!"#$%&\'()*+,-./:;<=F',
     ),
     (
         'https://s.ytimg.com/yts/jsbin/html5player-en_US-vflCGk6yw/html5player.js',
         '4646B5181C6C3020DF1D9C7FCFEA.AD80ABF70C39BD369CCCAE780AFBB98FA6B6CB42766249D9488C288',
-        '82C8849D94266724DC6B6AF89BBFA087EACCD963.B93C07FBA084ACAEFCF7C9D1FD0203C6C1815B6B'
+        '82C8849D94266724DC6B6AF89BBFA087EACCD963.B93C07FBA084ACAEFCF7C9D1FD0203C6C1815B6B',
     ),
     (
         'https://s.ytimg.com/yts/jsbin/html5player-en_US-vflKjOTVq/html5player.js',
@@ -68,6 +68,86 @@
         '2aq0aqSyOoJXtK73m-uME_jv7-pT15gOFC02RFkGMqWpzEICs69VdbwQ0LDp1v7j8xx92efCJlYFYb1sUkkBSPOlPmXgIARw8JQ0qOAOAA',
         'AOq0QJ8wRAIgXmPlOPSBkkUs1bYFYlJCfe29xx8j7v1pDL2QwbdV96sCIEzpWqMGkFR20CFOg51Tp-7vj_EMu-m37KtXJoOySqa0',
     ),
+    (
+        'https://www.youtube.com/s/player/3bb1f723/player_ias.vflset/en_US/base.js',
+        '2aq0aqSyOoJXtK73m-uME_jv7-pT15gOFC02RFkGMqWpzEICs69VdbwQ0LDp1v7j8xx92efCJlYFYb1sUkkBSPOlPmXgIARw8JQ0qOAOAA',
+        'MyOSJXtKI3m-uME_jv7-pT12gOFC02RFkGoqWpzE0Cs69VdbwQ0LDp1v7j8xx92efCJlYFYb1sUkkBSPOlPmXgIARw8JQ0qOAOAA',
+    ),
+    (
+        'https://www.youtube.com/s/player/2f1832d2/player_ias.vflset/en_US/base.js',
+        '2aq0aqSyOoJXtK73m-uME_jv7-pT15gOFC02RFkGMqWpzEICs69VdbwQ0LDp1v7j8xx92efCJlYFYb1sUkkBSPOlPmXgIARw8JQ0qOAOAA',
+        '0QJ8wRAIgXmPlOPSBkkUs1bYFYlJCfe29xxAj7v1pDL0QwbdV96sCIEzpWqMGkFR20CFOg51Tp-7vj_EMu-m37KtXJ2OySqa0q',
+    ),
+    (
+        'https://www.youtube.com/s/player/643afba4/tv-player-ias.vflset/tv-player-ias.js',
+        '2aq0aqSyOoJXtK73m-uME_jv7-pT15gOFC02RFkGMqWpzEICs69VdbwQ0LDp1v7j8xx92efCJlYFYb1sUkkBSPOlPmXgIARw8JQ0qOAOAA',
+        'AAOAOq0QJ8wRAIgXmPlOPSBkkUs1bYFYlJCfe29xx8j7vgpDL0QwbdV06sCIEzpWqMGkFR20CFOS21Tp-7vj_EMu-m37KtXJoOy1',
+    ),
+    (
+        'https://www.youtube.com/s/player/363db69b/player_ias.vflset/en_US/base.js',
+        '2aq0aqSyOoJXtK73m-uME_jv7-pT15gOFC02RFkGMqWpzEICs69VdbwQ0LDp1v7j8xx92efCJlYFYb1sUkkBSPOlPmXgIARw8JQ0qOAOAA',
+        '0aqSyOoJXtK73m-uME_jv7-pT15gOFC02RFkGMqWpz2ICs6EVdbwQ0LDp1v7j8xx92efCJlYFYb1sUkkBSPOlPmXgIARw8JQ0qOAOAA',
+    ),
+    (
+        'https://www.youtube.com/s/player/363db69b/player_ias_tce.vflset/en_US/base.js',
+        '2aq0aqSyOoJXtK73m-uME_jv7-pT15gOFC02RFkGMqWpzEICs69VdbwQ0LDp1v7j8xx92efCJlYFYb1sUkkBSPOlPmXgIARw8JQ0qOAOAA',
+        '0aqSyOoJXtK73m-uME_jv7-pT15gOFC02RFkGMqWpz2ICs6EVdbwQ0LDp1v7j8xx92efCJlYFYb1sUkkBSPOlPmXgIARw8JQ0qOAOAA',
+    ),
+    (
+        'https://www.youtube.com/s/player/4fcd6e4a/player_ias.vflset/en_US/base.js',
+        '2aq0aqSyOoJXtK73m-uME_jv7-pT15gOFC02RFkGMqWpzEICs69VdbwQ0LDp1v7j8xx92efCJlYFYb1sUkkBSPOlPmXgIARw8JQ0qOAOAA',
+        'wAOAOq0QJ8ARAIgXmPlOPSBkkUs1bYFYlJCfe29xx8q7v1pDL0QwbdV96sCIEzpWqMGkFR20CFOg51Tp-7vj_EMu-m37KtXJoOySqa0',
+    ),
+    (
+        'https://www.youtube.com/s/player/4fcd6e4a/player_ias_tce.vflset/en_US/base.js',
+        '2aq0aqSyOoJXtK73m-uME_jv7-pT15gOFC02RFkGMqWpzEICs69VdbwQ0LDp1v7j8xx92efCJlYFYb1sUkkBSPOlPmXgIARw8JQ0qOAOAA',
+        'wAOAOq0QJ8ARAIgXmPlOPSBkkUs1bYFYlJCfe29xx8q7v1pDL0QwbdV96sCIEzpWqMGkFR20CFOg51Tp-7vj_EMu-m37KtXJoOySqa0',
+    ),
+    (
+        'https://www.youtube.com/s/player/20830619/player_ias.vflset/en_US/base.js',
+        '2aq0aqSyOoJXtK73m-uME_jv7-pT15gOFC02RFkGMqWpzEICs69VdbwQ0LDp1v7j8xx92efCJlYFYb1sUkkBSPOlPmXgIARw8JQ0qOAOAA',
+        '7AOq0QJ8wRAIgXmPlOPSBkkAs1bYFYlJCfe29xx8jOv1pDL0Q2bdV96sCIEzpWqMGkFR20CFOg51Tp-7vj_EMu-m37KtXJoOySqa0qaw',
+    ),
+    (
+        'https://www.youtube.com/s/player/20830619/player_ias_tce.vflset/en_US/base.js',
+        '2aq0aqSyOoJXtK73m-uME_jv7-pT15gOFC02RFkGMqWpzEICs69VdbwQ0LDp1v7j8xx92efCJlYFYb1sUkkBSPOlPmXgIARw8JQ0qOAOAA',
+        '7AOq0QJ8wRAIgXmPlOPSBkkAs1bYFYlJCfe29xx8jOv1pDL0Q2bdV96sCIEzpWqMGkFR20CFOg51Tp-7vj_EMu-m37KtXJoOySqa0qaw',
+    ),
+    (
+        'https://www.youtube.com/s/player/20830619/player-plasma-ias-phone-en_US.vflset/base.js',
+        '2aq0aqSyOoJXtK73m-uME_jv7-pT15gOFC02RFkGMqWpzEICs69VdbwQ0LDp1v7j8xx92efCJlYFYb1sUkkBSPOlPmXgIARw8JQ0qOAOAA',
+        '7AOq0QJ8wRAIgXmPlOPSBkkAs1bYFYlJCfe29xx8jOv1pDL0Q2bdV96sCIEzpWqMGkFR20CFOg51Tp-7vj_EMu-m37KtXJoOySqa0qaw',
+    ),
+    (
+        'https://www.youtube.com/s/player/20830619/player-plasma-ias-tablet-en_US.vflset/base.js',
+        '2aq0aqSyOoJXtK73m-uME_jv7-pT15gOFC02RFkGMqWpzEICs69VdbwQ0LDp1v7j8xx92efCJlYFYb1sUkkBSPOlPmXgIARw8JQ0qOAOAA',
+        '7AOq0QJ8wRAIgXmPlOPSBkkAs1bYFYlJCfe29xx8jOv1pDL0Q2bdV96sCIEzpWqMGkFR20CFOg51Tp-7vj_EMu-m37KtXJoOySqa0qaw',
+    ),
+    (
+        'https://www.youtube.com/s/player/8a8ac953/player_ias_tce.vflset/en_US/base.js',
+        '2aq0aqSyOoJXtK73m-uME_jv7-pT15gOFC02RFkGMqWpzEICs69VdbwQ0LDp1v7j8xx92efCJlYFYb1sUkkBSPOlPmXgIARw8JQ0qOAOAA',
+        'IAOAOq0QJ8wRAAgXmPlOPSBkkUs1bYFYlJCfe29xx8j7v1pDL0QwbdV96sCIEzpWqMGkFR20CFOg51Tp-7vj_E2u-m37KtXJoOySqa0',
+    ),
+    (
+        'https://www.youtube.com/s/player/8a8ac953/tv-player-es6.vflset/tv-player-es6.js',
+        '2aq0aqSyOoJXtK73m-uME_jv7-pT15gOFC02RFkGMqWpzEICs69VdbwQ0LDp1v7j8xx92efCJlYFYb1sUkkBSPOlPmXgIARw8JQ0qOAOAA',
+        'IAOAOq0QJ8wRAAgXmPlOPSBkkUs1bYFYlJCfe29xx8j7v1pDL0QwbdV96sCIEzpWqMGkFR20CFOg51Tp-7vj_E2u-m37KtXJoOySqa0',
+    ),
+    (
+        'https://www.youtube.com/s/player/e12fbea4/player_ias.vflset/en_US/base.js',
+        'gN7a-hudCuAuPH6fByOk1_GNXN0yNMHShjZXS2VOgsEItAJz0tipeavEOmNdYN-wUtcEqD3bCXjc0iyKfAyZxCBGgIARwsSdQfJ2CJtt',
+        'JC2JfQdSswRAIgGBCxZyAfKyi0cjXCb3DqEctUw-NYdNmOEvaepit0zJAtIEsgOV2SXZjhSHMNy0NXNG_1kOyBf6HPuAuCduh-a',
+    ),
+    (
+        'https://www.youtube.com/s/player/010fbc8d/player_es5.vflset/en_US/base.js',
+        'gN7a-hudCuAuPH6fByOk1_GNXN0yNMHShjZXS2VOgsEItAJz0tipeavEOmNdYN-wUtcEqD3bCXjc0iyKfAyZxCBGgIARwsSdQfJ2CJtt',
+        'ttJC2JfQdSswRAIgGBCxZyAfKyi0cjXCb3DqEctUw-NYdNmOEvaepit2zJAsIEggOVaSXZjhSHMNy0NXNG_1kOyBf6HPuAuCduh-',
+    ),
+    (
+        'https://www.youtube.com/s/player/010fbc8d/player_es6.vflset/en_US/base.js',
+        'gN7a-hudCuAuPH6fByOk1_GNXN0yNMHShjZXS2VOgsEItAJz0tipeavEOmNdYN-wUtcEqD3bCXjc0iyKfAyZxCBGgIARwsSdQfJ2CJtt',
+        'ttJC2JfQdSswRAIgGBCxZyAfKyi0cjXCb3DqEctUw-NYdNmOEvaepit2zJAsIEggOVaSXZjhSHMNy0NXNG_1kOyBf6HPuAuCduh-',
+    ),
 ]
 
 _NSIG_TESTS = [
@@ -163,6 +243,158 @@
         'https://www.youtube.com/s/player/b7910ca8/player_ias.vflset/en_US/base.js',
         '_hXMCwMt9qE310D', 'LoZMgkkofRMCZQ',
     ),
+    (
+        'https://www.youtube.com/s/player/590f65a6/player_ias.vflset/en_US/base.js',
+        '1tm7-g_A9zsI8_Lay_', 'xI4Vem4Put_rOg',
+    ),
+    (
+        'https://www.youtube.com/s/player/b22ef6e7/player_ias.vflset/en_US/base.js',
+        'b6HcntHGkvBLk_FRf', 'kNPW6A7FyP2l8A',
+    ),
+    (
+        'https://www.youtube.com/s/player/3400486c/player_ias.vflset/en_US/base.js',
+        'lL46g3XifCKUZn1Xfw', 'z767lhet6V2Skl',
+    ),
+    (
+        'https://www.youtube.com/s/player/20dfca59/player_ias.vflset/en_US/base.js',
+        '-fLCxedkAk4LUTK2', 'O8kfRq1y1eyHGw',
+    ),
+    (
+        'https://www.youtube.com/s/player/b12cc44b/player_ias.vflset/en_US/base.js',
+        'keLa5R2U00sR9SQK', 'N1OGyujjEwMnLw',
+    ),
+    (
+        'https://www.youtube.com/s/player/3bb1f723/player_ias.vflset/en_US/base.js',
+        'gK15nzVyaXE9RsMP3z', 'ZFFWFLPWx9DEgQ',
+    ),
+    (
+        'https://www.youtube.com/s/player/2f1832d2/player_ias.vflset/en_US/base.js',
+        'YWt1qdbe8SAfkoPHW5d', 'RrRjWQOJmBiP',
+    ),
+    (
+        'https://www.youtube.com/s/player/9c6dfc4a/player_ias.vflset/en_US/base.js',
+        'jbu7ylIosQHyJyJV', 'uwI0ESiynAmhNg',
+    ),
+    (
+        'https://www.youtube.com/s/player/e7567ecf/player_ias_tce.vflset/en_US/base.js',
+        'Sy4aDGc0VpYRR9ew_', '5UPOT1VhoZxNLQ',
+    ),
+    (
+        'https://www.youtube.com/s/player/d50f54ef/player_ias_tce.vflset/en_US/base.js',
+        'Ha7507LzRmH3Utygtj', 'XFTb2HoeOE5MHg',
+    ),
+    (
+        'https://www.youtube.com/s/player/074a8365/player_ias_tce.vflset/en_US/base.js',
+        'Ha7507LzRmH3Utygtj', 'ufTsrE0IVYrkl8v',
+    ),
+    (
+        'https://www.youtube.com/s/player/643afba4/player_ias.vflset/en_US/base.js',
+        'N5uAlLqm0eg1GyHO', 'dCBQOejdq5s-ww',
+    ),
+    (
+        'https://www.youtube.com/s/player/69f581a5/tv-player-ias.vflset/tv-player-ias.js',
+        '-qIP447rVlTTwaZjY', 'KNcGOksBAvwqQg',
+    ),
+    (
+        'https://www.youtube.com/s/player/643afba4/tv-player-ias.vflset/tv-player-ias.js',
+        'ir9-V6cdbCiyKxhr', '2PL7ZDYAALMfmA',
+    ),
+    (
+        'https://www.youtube.com/s/player/363db69b/player_ias.vflset/en_US/base.js',
+        'eWYu5d5YeY_4LyEDc', 'XJQqf-N7Xra3gg',
+    ),
+    (
+        'https://www.youtube.com/s/player/4fcd6e4a/player_ias.vflset/en_US/base.js',
+        'o_L251jm8yhZkWtBW', 'lXoxI3XvToqn6A',
+    ),
+    (
+        'https://www.youtube.com/s/player/4fcd6e4a/player_ias_tce.vflset/en_US/base.js',
+        'o_L251jm8yhZkWtBW', 'lXoxI3XvToqn6A',
+    ),
+    (
+        'https://www.youtube.com/s/player/20830619/tv-player-ias.vflset/tv-player-ias.js',
+        'ir9-V6cdbCiyKxhr', '9YE85kNjZiS4',
+    ),
+    (
+        'https://www.youtube.com/s/player/20830619/player-plasma-ias-phone-en_US.vflset/base.js',
+        'ir9-V6cdbCiyKxhr', '9YE85kNjZiS4',
+    ),
+    (
+        'https://www.youtube.com/s/player/20830619/player-plasma-ias-tablet-en_US.vflset/base.js',
+        'ir9-V6cdbCiyKxhr', '9YE85kNjZiS4',
+    ),
+    (
+        'https://www.youtube.com/s/player/8a8ac953/player_ias_tce.vflset/en_US/base.js',
+        'MiBYeXx_vRREbiCCmh', 'RtZYMVvmkE0JE',
+    ),
+    (
+        'https://www.youtube.com/s/player/8a8ac953/tv-player-es6.vflset/tv-player-es6.js',
+        'MiBYeXx_vRREbiCCmh', 'RtZYMVvmkE0JE',
+    ),
+    (
+        'https://www.youtube.com/s/player/59b252b9/player_ias.vflset/en_US/base.js',
+        'D3XWVpYgwhLLKNK4AGX', 'aZrQ1qWJ5yv5h',
+    ),
+    (
+        'https://www.youtube.com/s/player/fc2a56a5/player_ias.vflset/en_US/base.js',
+        'qTKWg_Il804jd2kAC', 'OtUAm2W6gyzJjB9u',
+    ),
+    (
+        'https://www.youtube.com/s/player/fc2a56a5/tv-player-ias.vflset/tv-player-ias.js',
+        'qTKWg_Il804jd2kAC', 'OtUAm2W6gyzJjB9u',
+    ),
+    (
+        'https://www.youtube.com/s/player/a74bf670/player_ias_tce.vflset/en_US/base.js',
+        'kM5r52fugSZRAKHfo3', 'hQP7k1hA22OrNTnq',
+    ),
+    (
+        'https://www.youtube.com/s/player/6275f73c/player_ias_tce.vflset/en_US/base.js',
+        'kM5r52fugSZRAKHfo3', '-I03XF0iyf6I_X0A',
+    ),
+    (
+        'https://www.youtube.com/s/player/20c72c18/player_ias_tce.vflset/en_US/base.js',
+        'kM5r52fugSZRAKHfo3', '-I03XF0iyf6I_X0A',
+    ),
+    (
+        'https://www.youtube.com/s/player/9fe2e06e/player_ias_tce.vflset/en_US/base.js',
+        'kM5r52fugSZRAKHfo3', '6r5ekNIiEMPutZy',
+    ),
+    (
+        'https://www.youtube.com/s/player/680f8c75/player_ias_tce.vflset/en_US/base.js',
+        'kM5r52fugSZRAKHfo3', '0ml9caTwpa55Jf',
+    ),
+    (
+        'https://www.youtube.com/s/player/14397202/player_ias_tce.vflset/en_US/base.js',
+        'kM5r52fugSZRAKHfo3', 'ozZFAN21okDdJTa',
+    ),
+    (
+        'https://www.youtube.com/s/player/5dcb2c1f/player_ias_tce.vflset/en_US/base.js',
+        'kM5r52fugSZRAKHfo3', 'p7iTbRZDYAF',
+    ),
+    (
+        'https://www.youtube.com/s/player/a10d7fcc/player_ias_tce.vflset/en_US/base.js',
+        'kM5r52fugSZRAKHfo3', '9Zue7DDHJSD',
+    ),
+    (
+        'https://www.youtube.com/s/player/8e20cb06/player_ias_tce.vflset/en_US/base.js',
+        'kM5r52fugSZRAKHfo3', '5-4tTneTROTpMzba',
+    ),
+    (
+        'https://www.youtube.com/s/player/e12fbea4/player_ias_tce.vflset/en_US/base.js',
+        'kM5r52fugSZRAKHfo3', 'XkeRfXIPOkSwfg',
+    ),
+    (
+        'https://www.youtube.com/s/player/ef259203/player_ias_tce.vflset/en_US/base.js',
+        'rPqBC01nJpqhhi2iA2U', 'hY7dbiKFT51UIA',
+    ),
+    (
+        'https://www.youtube.com/s/player/010fbc8d/player_es5.vflset/en_US/base.js',
+        '0hlOAlqjFszVvF4Z', 'R-H23bZGAsRFTg',
+    ),
+    (
+        'https://www.youtube.com/s/player/010fbc8d/player_es6.vflset/en_US/base.js',
+        '0hlOAlqjFszVvF4Z', 'R-H23bZGAsRFTg',
+    ),
 ]
 
 
@@ -176,6 +408,8 @@ def test_youtube_extract_player_info(self):
             ('https://www.youtube.com/s/player/64dddad9/player-plasma-ias-phone-en_US.vflset/base.js', '64dddad9'),
             ('https://www.youtube.com/s/player/64dddad9/player-plasma-ias-phone-de_DE.vflset/base.js', '64dddad9'),
             ('https://www.youtube.com/s/player/64dddad9/player-plasma-ias-tablet-en_US.vflset/base.js', '64dddad9'),
+            ('https://www.youtube.com/s/player/e7567ecf/player_ias_tce.vflset/en_US/base.js', 'e7567ecf'),
+            ('https://www.youtube.com/s/player/643afba4/tv-player-ias.vflset/tv-player-ias.js', '643afba4'),
             # obsolete
             ('https://www.youtube.com/yts/jsbin/player_ias-vfle4-e03/en_US/base.js', 'vfle4-e03'),
             ('https://www.youtube.com/yts/jsbin/player_ias-vfl49f_g4/en_US/base.js', 'vfl49f_g4'),
@@ -207,44 +441,52 @@ def tearDown(self):
 def t_factory(name, sig_func, url_pattern):
     def make_tfunc(url, sig_input, expected_sig):
         m = url_pattern.match(url)
-        assert m, '%r should follow URL format' % url
-        test_id = m.group('id')
+        assert m, f'{url!r} should follow URL format'
+        test_id = re.sub(r'[/.-]', '_', m.group('id') or m.group('compat_id'))
 
         def test_func(self):
-            basename = f'player-{name}-{test_id}.js'
+            basename = f'player-{test_id}.js'
             fn = os.path.join(self.TESTDATA_DIR, basename)
 
             if not os.path.exists(fn):
                 urllib.request.urlretrieve(url, fn)
             with open(fn, encoding='utf-8') as testf:
                 jscode = testf.read()
-            self.assertEqual(sig_func(jscode, sig_input), expected_sig)
+            self.assertEqual(sig_func(jscode, sig_input, url), expected_sig)
 
         test_func.__name__ = f'test_{name}_js_{test_id}'
         setattr(TestSignature, test_func.__name__, test_func)
     return make_tfunc
 
 
-def signature(jscode, sig_input):
-    func = YoutubeIE(FakeYDL())._parse_sig_js(jscode)
+def signature(jscode, sig_input, player_url):
+    func = YoutubeIE(FakeYDL())._parse_sig_js(jscode, player_url)
     src_sig = (
         str(string.printable[:sig_input])
         if isinstance(sig_input, int) else sig_input)
     return func(src_sig)
 
 
-def n_sig(jscode, sig_input):
-    funcname = YoutubeIE(FakeYDL())._extract_n_function_name(jscode)
-    return JSInterpreter(jscode).call_function(funcname, sig_input)
+def n_sig(jscode, sig_input, player_url):
+    ie = YoutubeIE(FakeYDL())
+    funcname = ie._extract_n_function_name(jscode, player_url=player_url)
+    jsi = JSInterpreter(jscode)
+    func = jsi.extract_function_from_code(*ie._fixup_n_function_code(*jsi.extract_function_code(funcname), jscode, player_url))
+    return func([sig_input])
 
 
 make_sig_test = t_factory(
-    'signature', signature, re.compile(r'.*(?:-|/player/)(?P<id>[a-zA-Z0-9_-]+)(?:/.+\.js|(?:/watch_as3|/html5player)?\.[a-z]+)$'))
+    'signature', signature,
+    re.compile(r'''(?x)
+        .+(?:
+            /player/(?P<id>[a-zA-Z0-9_/.-]+)|
+            /html5player-(?:en_US-)?(?P<compat_id>[a-zA-Z0-9_-]+)(?:/watch_as3|/html5player)?
+        )\.js$'''))
 for test_spec in _SIG_TESTS:
     make_sig_test(*test_spec)
 
 make_nsig_test = t_factory(
-    'nsig', n_sig, re.compile(r'.+/player/(?P<id>[a-zA-Z0-9_-]+)/.+.js$'))
+    'nsig', n_sig, re.compile(r'.+/player/(?P<id>[a-zA-Z0-9_/.-]+)\.js$'))
 for test_spec in _NSIG_TESTS:
     make_nsig_test(*test_spec)
 

test/testdata/netrc/netrc

@@ -0,0 +1,4 @@
+machine normal_use login user password pass
+machine empty_user login "" password pass
+machine empty_pass login user password ""
+machine both_empty login "" password ""

test/testdata/netrc/print_netrc.py

@@ -0,0 +1,2 @@
+with open('./test/testdata/netrc/netrc', encoding='utf-8') as fp:
+    print(fp.read())

test/testdata/plugin_packages/testpackage/yt_dlp_plugins/extractor/package.py

@@ -0,0 +1,6 @@
+from yt_dlp.extractor.common import InfoExtractor
+
+
+class PackagePluginIE(InfoExtractor):
+    _VALID_URL = 'package'
+    pass

test/testdata/reload_plugins/yt_dlp_plugins/extractor/normal.py

@@ -0,0 +1,10 @@
+from yt_dlp.extractor.common import InfoExtractor
+
+
+class NormalPluginIE(InfoExtractor):
+    _VALID_URL = 'normal'
+    REPLACED = True
+
+
+class _IgnoreUnderscorePluginIE(InfoExtractor):
+    pass

test/testdata/reload_plugins/yt_dlp_plugins/postprocessor/normal.py

@@ -0,0 +1,5 @@
+from yt_dlp.postprocessor.common import PostProcessor
+
+
+class NormalPluginPP(PostProcessor):
+    REPLACED = True

test/testdata/yt_dlp_plugins/extractor/ignore.py

@@ -6,6 +6,7 @@ class IgnoreNotInAllPluginIE(InfoExtractor):
 
 
 class InAllPluginIE(InfoExtractor):
+    _VALID_URL = 'inallpluginie'
     pass
 
 

test/testdata/yt_dlp_plugins/extractor/normal.py

@@ -2,8 +2,10 @@
 
 
 class NormalPluginIE(InfoExtractor):
-    pass
+    _VALID_URL = 'normalpluginie'
+    REPLACED = False
 
 
 class _IgnoreUnderscorePluginIE(InfoExtractor):
+    _VALID_URL = 'ignoreunderscorepluginie'
     pass

test/testdata/yt_dlp_plugins/extractor/override.py

@@ -0,0 +1,5 @@
+from yt_dlp.extractor.generic import GenericIE
+
+
+class OverrideGenericIE(GenericIE, plugin_name='override'):
+    TEST_FIELD = 'override'

test/testdata/yt_dlp_plugins/extractor/overridetwo.py

@@ -0,0 +1,5 @@
+from yt_dlp.extractor.generic import GenericIE
+
+
+class _UnderscoreOverrideGenericIE(GenericIE, plugin_name='underscore-override'):
+    SECONDARY_TEST_FIELD = 'underscore-override'

test/testdata/yt_dlp_plugins/postprocessor/normal.py

@@ -2,4 +2,4 @@
 
 
 class NormalPluginPP(PostProcessor):
-    pass
+    REPLACED = False

test/testdata/zipped_plugins/yt_dlp_plugins/extractor/zipped.py

@@ -2,4 +2,5 @@
 
 
 class ZippedPluginIE(InfoExtractor):
+    _VALID_URL = 'zippedpluginie'
     pass