Unable to extract the info of some YouTube videos (30fps) providing av1 versions

[ItoSchum]

Checklist

• I'm reporting a broken site support issue
• I've verified that I'm running youtube-dl version 2020.07.28
• I've checked that all provided URLs are alive and playable in a browser
• I've checked that all URLs and arguments with special characters are properly quoted or escaped
• I've read bugs section in FAQ

Verbose log

→ youtube-dl --verbose -F "https://youtu.be/ygY2qObZv24"

[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: [u'--verbose', u'-F', u'https://youtu.be/ygY2qObZv24']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2020.06.16.1
[debug] Python version 2.7.16 (CPython) - Darwin-19.6.0-x86_64-i386-64bit
[debug] exe versions: ffmpeg 4.3, ffprobe 4.3, rtmpdump 2.4
[debug] Proxy map: {}
[youtube] ygY2qObZv24: Downloading webpage
[youtube] {18} signature length 108, html5 player f82a8c37
[youtube] ygY2qObZv24: Downloading player https://www.youtube.com/s/player/f82a8c37/player_ias.vflset/en_US/base.js
ERROR: Signature extraction failed: Traceback (most recent call last):
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 1426, in _decrypt_signature
    video_id, player_url, s
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 1338, in _extract_signature_function
    cache_res = res(test_string)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 1402, in <lambda>
    return lambda s: initial_function([s])
  File "/usr/local/bin/youtube-dl/youtube_dl/jsinterp.py", line 258, in resf
    res, abort = self.interpret_statement(stmt, local_vars)
  File "/usr/local/bin/youtube-dl/youtube_dl/jsinterp.py", line 56, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/usr/local/bin/youtube-dl/youtube_dl/jsinterp.py", line 92, in interpret_expression
    m.group('expr'), local_vars, allow_recursion - 1)
  File "/usr/local/bin/youtube-dl/youtube_dl/jsinterp.py", line 189, in interpret_expression
    m.group('x'), local_vars, allow_recursion - 1)
  File "/usr/local/bin/youtube-dl/youtube_dl/jsinterp.py", line 56, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/usr/local/bin/youtube-dl/youtube_dl/jsinterp.py", line 211, in interpret_expression
    raise ExtractorError('Unsupported JS expression %r' % expr)
ExtractorError: Unsupported JS expression u'['; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
 (caused by ExtractorError(u"Unsupported JS expression u'['; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.",)); please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
Traceback (most recent call last):
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 1426, in _decrypt_signature
    video_id, player_url, s
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 1338, in _extract_signature_function
    cache_res = res(test_string)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 1402, in <lambda>
    return lambda s: initial_function([s])
  File "/usr/local/bin/youtube-dl/youtube_dl/jsinterp.py", line 258, in resf
    res, abort = self.interpret_statement(stmt, local_vars)
  File "/usr/local/bin/youtube-dl/youtube_dl/jsinterp.py", line 56, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/usr/local/bin/youtube-dl/youtube_dl/jsinterp.py", line 92, in interpret_expression
    m.group('expr'), local_vars, allow_recursion - 1)
  File "/usr/local/bin/youtube-dl/youtube_dl/jsinterp.py", line 189, in interpret_expression
    m.group('x'), local_vars, allow_recursion - 1)
  File "/usr/local/bin/youtube-dl/youtube_dl/jsinterp.py", line 56, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/usr/local/bin/youtube-dl/youtube_dl/jsinterp.py", line 211, in interpret_expression
    raise ExtractorError('Unsupported JS expression %r' % expr)
ExtractorError: Unsupported JS expression u'['; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
Traceback (most recent call last):
  File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 797, in extract_info
    ie_result = ie.extract(url)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 530, in extract
    ie_result = self._real_extract(url)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 2107, in _real_extract
    encrypted_sig, video_id, player_url, age_gate)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 1436, in _decrypt_signature
    'Signature extraction failed: ' + tb, cause=e)
ExtractorError: Signature extraction failed: Traceback (most recent call last):
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 1426, in _decrypt_signature
    video_id, player_url, s
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 1338, in _extract_signature_function
    cache_res = res(test_string)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 1402, in <lambda>
    return lambda s: initial_function([s])
  File "/usr/local/bin/youtube-dl/youtube_dl/jsinterp.py", line 258, in resf
    res, abort = self.interpret_statement(stmt, local_vars)
  File "/usr/local/bin/youtube-dl/youtube_dl/jsinterp.py", line 56, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/usr/local/bin/youtube-dl/youtube_dl/jsinterp.py", line 92, in interpret_expression
    m.group('expr'), local_vars, allow_recursion - 1)
  File "/usr/local/bin/youtube-dl/youtube_dl/jsinterp.py", line 189, in interpret_expression
    m.group('x'), local_vars, allow_recursion - 1)
  File "/usr/local/bin/youtube-dl/youtube_dl/jsinterp.py", line 56, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/usr/local/bin/youtube-dl/youtube_dl/jsinterp.py", line 211, in interpret_expression
    raise ExtractorError('Unsupported JS expression %r' % expr)
ExtractorError: Unsupported JS expression u'['; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
 (caused by ExtractorError(u"Unsupported JS expression u'['; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.",)); please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.

Description

I've tested this with different YouTube videos which provide av1 versions. It's workable for the 24fps videos providing av01.0.00M.08 version, but failing for the 30fps videos.

• Working URL (no credentials needed):

  • https://www.youtube.com/watch?v=LxC0kD-GuBQ
  • https://www.youtube.com/watch?v=1YHPRJcLyCc

• Failing URL (no credentials needed):

  • https://www.youtube.com/watch?v=ygY2qObZv24
  • https://www.youtube.com/watch?v=ewa_hIUtKsI