Signature extraction fails on certain YouTube URLs #26135

Igetin · 2020-07-27T20:58:05Z

Checklist

I'm reporting a broken site support
I've verified that I'm running youtube-dl version 2020.06.16.1
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 searched the bugtracker for similar issues including closed ones

Verbose log

[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['https://www.youtube.com/watch?v=0l9u9uezX_4', '--verbose']
[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 3.7.7 (CPython) - Linux-5.6.13-100.fc30.x86_64-x86_64-with-fedora-30-Thirty
[debug] exe versions: ffmpeg N-52056-ge5d25d1147-static, ffprobe N-52056-ge5d25d1147-static
[debug] Proxy map: {}
[youtube] 0l9u9uezX_4: Downloading webpage
[youtube] {18} signature length 108, html5 player f82a8c37
[youtube] 0l9u9uezX_4: 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 "/home/ige/.local/lib/python3.7/site-packages/youtube_dl/extractor/youtube.py", line 1426, in _decrypt_signature
    video_id, player_url, s
  File "/home/ige/.local/lib/python3.7/site-packages/youtube_dl/extractor/youtube.py", line 1338, in _extract_signature_function
    cache_res = res(test_string)
  File "/home/ige/.local/lib/python3.7/site-packages/youtube_dl/extractor/youtube.py", line 1402, in <lambda>
    return lambda s: initial_function([s])
  File "/home/ige/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 258, in resf
    res, abort = self.interpret_statement(stmt, local_vars)
  File "/home/ige/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 56, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/home/ige/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 92, in interpret_expression
    m.group('expr'), local_vars, allow_recursion - 1)
  File "/home/ige/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 189, in interpret_expression
    m.group('x'), local_vars, allow_recursion - 1)
  File "/home/ige/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 56, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/home/ige/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 211, in interpret_expression
    raise ExtractorError('Unsupported JS expression %r' % expr)
youtube_dl.utils.ExtractorError: Unsupported JS expression '['; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see  https://yt-dl.org/update  on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
 (caused by ExtractorError("Unsupported JS expression '['; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see  https://yt-dl.org/update  on how 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; see  https://yt-dl.org/update  on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
Traceback (most recent call last):
  File "/home/ige/.local/lib/python3.7/site-packages/youtube_dl/extractor/youtube.py", line 1426, in _decrypt_signature
    video_id, player_url, s
  File "/home/ige/.local/lib/python3.7/site-packages/youtube_dl/extractor/youtube.py", line 1338, in _extract_signature_function
    cache_res = res(test_string)
  File "/home/ige/.local/lib/python3.7/site-packages/youtube_dl/extractor/youtube.py", line 1402, in <lambda>
    return lambda s: initial_function([s])
  File "/home/ige/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 258, in resf
    res, abort = self.interpret_statement(stmt, local_vars)
  File "/home/ige/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 56, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/home/ige/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 92, in interpret_expression
    m.group('expr'), local_vars, allow_recursion - 1)
  File "/home/ige/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 189, in interpret_expression
    m.group('x'), local_vars, allow_recursion - 1)
  File "/home/ige/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 56, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/home/ige/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 211, in interpret_expression
    raise ExtractorError('Unsupported JS expression %r' % expr)
youtube_dl.utils.ExtractorError: Unsupported JS expression '['; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see  https://yt-dl.org/update  on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
Traceback (most recent call last):
  File "/home/ige/.local/lib/python3.7/site-packages/youtube_dl/extractor/youtube.py", line 1426, in _decrypt_signature
    video_id, player_url, s
  File "/home/ige/.local/lib/python3.7/site-packages/youtube_dl/extractor/youtube.py", line 1338, in _extract_signature_function
    cache_res = res(test_string)
  File "/home/ige/.local/lib/python3.7/site-packages/youtube_dl/extractor/youtube.py", line 1402, in <lambda>
    return lambda s: initial_function([s])
  File "/home/ige/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 258, in resf
    res, abort = self.interpret_statement(stmt, local_vars)
  File "/home/ige/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 56, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/home/ige/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 92, in interpret_expression
    m.group('expr'), local_vars, allow_recursion - 1)
  File "/home/ige/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 189, in interpret_expression
    m.group('x'), local_vars, allow_recursion - 1)
  File "/home/ige/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 56, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/home/ige/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 211, in interpret_expression
    raise ExtractorError('Unsupported JS expression %r' % expr)
youtube_dl.utils.ExtractorError: Unsupported JS expression '['; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see  https://yt-dl.org/update  on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/ige/.local/lib/python3.7/site-packages/youtube_dl/YoutubeDL.py", line 797, in extract_info
    ie_result = ie.extract(url)
  File "/home/ige/.local/lib/python3.7/site-packages/youtube_dl/extractor/common.py", line 530, in extract
    ie_result = self._real_extract(url)
  File "/home/ige/.local/lib/python3.7/site-packages/youtube_dl/extractor/youtube.py", line 2107, in _real_extract
    encrypted_sig, video_id, player_url, age_gate)
  File "/home/ige/.local/lib/python3.7/site-packages/youtube_dl/extractor/youtube.py", line 1436, in _decrypt_signature
    'Signature extraction failed: ' + tb, cause=e)
youtube_dl.utils.ExtractorError: Signature extraction failed: Traceback (most recent call last):
  File "/home/ige/.local/lib/python3.7/site-packages/youtube_dl/extractor/youtube.py", line 1426, in _decrypt_signature
    video_id, player_url, s
  File "/home/ige/.local/lib/python3.7/site-packages/youtube_dl/extractor/youtube.py", line 1338, in _extract_signature_function
    cache_res = res(test_string)
  File "/home/ige/.local/lib/python3.7/site-packages/youtube_dl/extractor/youtube.py", line 1402, in <lambda>
    return lambda s: initial_function([s])
  File "/home/ige/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 258, in resf
    res, abort = self.interpret_statement(stmt, local_vars)
  File "/home/ige/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 56, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/home/ige/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 92, in interpret_expression
    m.group('expr'), local_vars, allow_recursion - 1)
  File "/home/ige/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 189, in interpret_expression
    m.group('x'), local_vars, allow_recursion - 1)
  File "/home/ige/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 56, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/home/ige/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 211, in interpret_expression
    raise ExtractorError('Unsupported JS expression %r' % expr)
youtube_dl.utils.ExtractorError: Unsupported JS expression '['; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see  https://yt-dl.org/update  on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
 (caused by ExtractorError("Unsupported JS expression '['; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see  https://yt-dl.org/update  on how 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; see  https://yt-dl.org/update  on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.

Description

When trying to download a certain video, the program encounters an ExtractorError. I’m simply running:

youtube-dl https://www.youtube.com/watch?v=0l9u9uezX_4

So far this is the only video URL that I’ve encountered which causes the error.

Friz64 · 2020-07-27T21:05:23Z

Also happens on https://www.youtube.com/watch?v=W6ax8p9pj4A

qwertz19281 · 2020-07-27T21:12:02Z

also happening to me for a specific video

[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['-vF', 'https://www.youtube.com/watch?v=fzQ6gRAEoy0']
[debug] Encodings: locale UTF-8, fs utf-8, out utf-8, pref UTF-8
[debug] youtube-dl version 2020.06.16.1
[debug] Git HEAD: a115e0759
[debug] Python version 3.8.2 (CPython) - Linux-5.7.10-050710-generic-x86_64-with-glibc2.29
[debug] exe versions: ffmpeg 4.2.4, ffprobe 4.2.4, rtmpdump 2.4
[debug] Proxy map: {}
[youtube] fzQ6gRAEoy0: Downloading webpage
[youtube] {18} signature length 108, html5 player f82a8c37
[youtube] fzQ6gRAEoy0: 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 "/home/aleren/git/youtube-dl/youtube_dl/extractor/youtube.py", line 1425, in _decrypt_signature
    func = self._extract_signature_function(
  File "/home/aleren/git/youtube-dl/youtube_dl/extractor/youtube.py", line 1338, in _extract_signature_function
    cache_res = res(test_string)
  File "/home/aleren/git/youtube-dl/youtube_dl/extractor/youtube.py", line 1402, in <lambda>
    return lambda s: initial_function([s])
  File "/home/aleren/git/youtube-dl/youtube_dl/jsinterp.py", line 258, in resf
    res, abort = self.interpret_statement(stmt, local_vars)
  File "/home/aleren/git/youtube-dl/youtube_dl/jsinterp.py", line 56, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/home/aleren/git/youtube-dl/youtube_dl/jsinterp.py", line 91, in interpret_expression
    right_val = self.interpret_expression(
  File "/home/aleren/git/youtube-dl/youtube_dl/jsinterp.py", line 188, in interpret_expression
    x, abort = self.interpret_statement(
  File "/home/aleren/git/youtube-dl/youtube_dl/jsinterp.py", line 56, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/home/aleren/git/youtube-dl/youtube_dl/jsinterp.py", line 211, in interpret_expression
    raise ExtractorError('Unsupported JS expression %r' % expr)
youtube_dl.utils.ExtractorError: Unsupported JS expression '['; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see  https://yt-dl.org/update  on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
 (caused by ExtractorError("Unsupported JS expression '['; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see  https://yt-dl.org/update  on how 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; see  https://yt-dl.org/update  on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
Traceback (most recent call last):
  File "/home/aleren/git/youtube-dl/youtube_dl/extractor/youtube.py", line 1425, in _decrypt_signature
    func = self._extract_signature_function(
  File "/home/aleren/git/youtube-dl/youtube_dl/extractor/youtube.py", line 1338, in _extract_signature_function
    cache_res = res(test_string)
  File "/home/aleren/git/youtube-dl/youtube_dl/extractor/youtube.py", line 1402, in <lambda>
    return lambda s: initial_function([s])
  File "/home/aleren/git/youtube-dl/youtube_dl/jsinterp.py", line 258, in resf
    res, abort = self.interpret_statement(stmt, local_vars)
  File "/home/aleren/git/youtube-dl/youtube_dl/jsinterp.py", line 56, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/home/aleren/git/youtube-dl/youtube_dl/jsinterp.py", line 91, in interpret_expression
    right_val = self.interpret_expression(
  File "/home/aleren/git/youtube-dl/youtube_dl/jsinterp.py", line 188, in interpret_expression
    x, abort = self.interpret_statement(
  File "/home/aleren/git/youtube-dl/youtube_dl/jsinterp.py", line 56, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/home/aleren/git/youtube-dl/youtube_dl/jsinterp.py", line 211, in interpret_expression
    raise ExtractorError('Unsupported JS expression %r' % expr)
youtube_dl.utils.ExtractorError: Unsupported JS expression '['; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see  https://yt-dl.org/update  on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
Traceback (most recent call last):
  File "/home/aleren/git/youtube-dl/youtube_dl/extractor/youtube.py", line 1425, in _decrypt_signature
    func = self._extract_signature_function(
  File "/home/aleren/git/youtube-dl/youtube_dl/extractor/youtube.py", line 1338, in _extract_signature_function
    cache_res = res(test_string)
  File "/home/aleren/git/youtube-dl/youtube_dl/extractor/youtube.py", line 1402, in <lambda>
    return lambda s: initial_function([s])
  File "/home/aleren/git/youtube-dl/youtube_dl/jsinterp.py", line 258, in resf
    res, abort = self.interpret_statement(stmt, local_vars)
  File "/home/aleren/git/youtube-dl/youtube_dl/jsinterp.py", line 56, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/home/aleren/git/youtube-dl/youtube_dl/jsinterp.py", line 91, in interpret_expression
    right_val = self.interpret_expression(
  File "/home/aleren/git/youtube-dl/youtube_dl/jsinterp.py", line 188, in interpret_expression
    x, abort = self.interpret_statement(
  File "/home/aleren/git/youtube-dl/youtube_dl/jsinterp.py", line 56, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/home/aleren/git/youtube-dl/youtube_dl/jsinterp.py", line 211, in interpret_expression
    raise ExtractorError('Unsupported JS expression %r' % expr)
youtube_dl.utils.ExtractorError: Unsupported JS expression '['; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see  https://yt-dl.org/update  on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/aleren/git/youtube-dl/youtube_dl/YoutubeDL.py", line 798, in extract_info
    ie_result = ie.extract(url)
  File "/home/aleren/git/youtube-dl/youtube_dl/extractor/common.py", line 530, in extract
    ie_result = self._real_extract(url)
  File "/home/aleren/git/youtube-dl/youtube_dl/extractor/youtube.py", line 2106, in _real_extract
    signature = self._decrypt_signature(
  File "/home/aleren/git/youtube-dl/youtube_dl/extractor/youtube.py", line 1435, in _decrypt_signature
    raise ExtractorError(
youtube_dl.utils.ExtractorError: Signature extraction failed: Traceback (most recent call last):
  File "/home/aleren/git/youtube-dl/youtube_dl/extractor/youtube.py", line 1425, in _decrypt_signature
    func = self._extract_signature_function(
  File "/home/aleren/git/youtube-dl/youtube_dl/extractor/youtube.py", line 1338, in _extract_signature_function
    cache_res = res(test_string)
  File "/home/aleren/git/youtube-dl/youtube_dl/extractor/youtube.py", line 1402, in <lambda>
    return lambda s: initial_function([s])
  File "/home/aleren/git/youtube-dl/youtube_dl/jsinterp.py", line 258, in resf
    res, abort = self.interpret_statement(stmt, local_vars)
  File "/home/aleren/git/youtube-dl/youtube_dl/jsinterp.py", line 56, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/home/aleren/git/youtube-dl/youtube_dl/jsinterp.py", line 91, in interpret_expression
    right_val = self.interpret_expression(
  File "/home/aleren/git/youtube-dl/youtube_dl/jsinterp.py", line 188, in interpret_expression
    x, abort = self.interpret_statement(
  File "/home/aleren/git/youtube-dl/youtube_dl/jsinterp.py", line 56, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/home/aleren/git/youtube-dl/youtube_dl/jsinterp.py", line 211, in interpret_expression
    raise ExtractorError('Unsupported JS expression %r' % expr)
youtube_dl.utils.ExtractorError: Unsupported JS expression '['; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see  https://yt-dl.org/update  on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
 (caused by ExtractorError("Unsupported JS expression '['; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see  https://yt-dl.org/update  on how 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; see  https://yt-dl.org/update  on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.

xdenyer · 2020-07-27T21:13:27Z

Running same (latest) version, error started partway through "youtube-dl -i PLHloTpmV7roPwnpg8ySknDs_bfA8N52s5" and restarting gives the same error on all videos in list. Videos play normally in browser.

Trenix25 · 2020-07-27T21:14:37Z

Happening to me too. Debian Linux 10.4.0. Plays in Firefox just fine.

$ youtube-dl -F --verbose "https://www.youtube.com/watch?v=j9H5hkwwPvw"

[debug] System config: [u'--abort-on-error', u'--socket-timeout', u'300', u'-4', u'--max-downloads', u'1', u'--max-filesize', u'1073741824', u'--no-playlist', u'--retries', u'10', u'--fragment-retries', u'10', u'--no-overwrites', u'--sleep-interval', u'0', u'--max-sleep-interval', u'5']
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: [u'-F', u'--verbose', u'https://www.youtube.com/watch?v=j9H5hkwwPvw']
[debug] Encodings: locale UTF-8, fs UTF-8, out None, pref UTF-8
[debug] youtube-dl version 2020.06.16.1
[debug] Python version 2.7.16 (CPython) - Linux-4.19.0-9-686-pae-i686-with-debian-10.4
[debug] exe versions: ffmpeg 4.1.4-1, ffprobe 4.1.4-1
[debug] Proxy map: {}
[youtube] j9H5hkwwPvw: Downloading webpage
[youtube] Downloading just video j9H5hkwwPvw because of --no-playlist
[youtube] {18} signature length 104, html5 player f82a8c37
[youtube] j9H5hkwwPvw: 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/download/youtube_dl/extractor/youtube.py", line 1426, in _decrypt_signature
video_id, player_url, s
File "/usr/local/bin/download/youtube_dl/extractor/youtube.py", line 1338, in _extract_signature_function
cache_res = res(test_string)
File "/usr/local/bin/download/youtube_dl/extractor/youtube.py", line 1402, in
return lambda s: initial_function([s])
File "/usr/local/bin/download/youtube_dl/jsinterp.py", line 258, in resf
res, abort = self.interpret_statement(stmt, local_vars)
File "/usr/local/bin/download/youtube_dl/jsinterp.py", line 56, in interpret_statement
v = self.interpret_expression(expr, local_vars, allow_recursion)
File "/usr/local/bin/download/youtube_dl/jsinterp.py", line 92, in interpret_expression
m.group('expr'), local_vars, allow_recursion - 1)
File "/usr/local/bin/download/youtube_dl/jsinterp.py", line 189, in interpret_expression
m.group('x'), local_vars, allow_recursion - 1)
File "/usr/local/bin/download/youtube_dl/jsinterp.py", line 56, in interpret_statement
v = self.interpret_expression(expr, local_vars, allow_recursion)
File "/usr/local/bin/download/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/download/youtube_dl/extractor/youtube.py", line 1426, in _decrypt_signature
video_id, player_url, s
File "/usr/local/bin/download/youtube_dl/extractor/youtube.py", line 1338, in _extract_signature_function
cache_res = res(test_string)
File "/usr/local/bin/download/youtube_dl/extractor/youtube.py", line 1402, in
return lambda s: initial_function([s])
File "/usr/local/bin/download/youtube_dl/jsinterp.py", line 258, in resf
res, abort = self.interpret_statement(stmt, local_vars)
File "/usr/local/bin/download/youtube_dl/jsinterp.py", line 56, in interpret_statement
v = self.interpret_expression(expr, local_vars, allow_recursion)
File "/usr/local/bin/download/youtube_dl/jsinterp.py", line 92, in interpret_expression
m.group('expr'), local_vars, allow_recursion - 1)
File "/usr/local/bin/download/youtube_dl/jsinterp.py", line 189, in interpret_expression
m.group('x'), local_vars, allow_recursion - 1)
File "/usr/local/bin/download/youtube_dl/jsinterp.py", line 56, in interpret_statement
v = self.interpret_expression(expr, local_vars, allow_recursion)
File "/usr/local/bin/download/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/download/youtube_dl/YoutubeDL.py", line 797, in extract_info
ie_result = ie.extract(url)
File "/usr/local/bin/download/youtube_dl/extractor/common.py", line 530, in extract
ie_result = self._real_extract(url)
File "/usr/local/bin/download/youtube_dl/extractor/youtube.py", line 2107, in _real_extract
encrypted_sig, video_id, player_url, age_gate)
File "/usr/local/bin/download/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/download/youtube_dl/extractor/youtube.py", line 1426, in _decrypt_signature
video_id, player_url, s
File "/usr/local/bin/download/youtube_dl/extractor/youtube.py", line 1338, in _extract_signature_function
cache_res = res(test_string)
File "/usr/local/bin/download/youtube_dl/extractor/youtube.py", line 1402, in
return lambda s: initial_function([s])
File "/usr/local/bin/download/youtube_dl/jsinterp.py", line 258, in resf
res, abort = self.interpret_statement(stmt, local_vars)
File "/usr/local/bin/download/youtube_dl/jsinterp.py", line 56, in interpret_statement
v = self.interpret_expression(expr, local_vars, allow_recursion)
File "/usr/local/bin/download/youtube_dl/jsinterp.py", line 92, in interpret_expression
m.group('expr'), local_vars, allow_recursion - 1)
File "/usr/local/bin/download/youtube_dl/jsinterp.py", line 189, in interpret_expression
m.group('x'), local_vars, allow_recursion - 1)
File "/usr/local/bin/download/youtube_dl/jsinterp.py", line 56, in interpret_statement
v = self.interpret_expression(expr, local_vars, allow_recursion)
File "/usr/local/bin/download/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.

$

I am also having the same problem with the same version of youtube-dl on my tablet when running Termux v0.75.

qwertz19281 · 2020-07-27T21:22:27Z

it seems to affect videos that require to extract js player (f82a8c37)

ElonSatoshi · 2020-07-27T21:42:49Z

I was downloading a video and when it stopped downloading at 40 something percent, I retried and got this error.

[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['--verbose', 'https://invidio.us/watch?v=U2Z7BY_igEw', '--format=bestaudio']
[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 3.7.3 (CPython) - Linux-4.19.0-9-amd64-x86_64-with-debian-10.4
[debug] exe versions: ffmpeg 4.1.6-1, ffprobe 4.1.6-1
[debug] Proxy map: {}
[youtube] U2Z7BY_igEw: Downloading webpage
[youtube] {18} signature length 108, html5 player f82a8c37
[youtube] U2Z7BY_igEw: 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 "/home/elonsatoshi/.local/lib/python3.7/site-packages/youtube_dl/extractor/youtube.py", line 1426, in _decrypt_signature
    video_id, player_url, s
  File "/home/elonsatoshi/.local/lib/python3.7/site-packages/youtube_dl/extractor/youtube.py", line 1338, in _extract_signature_function
    cache_res = res(test_string)
  File "/home/elonsatoshi/.local/lib/python3.7/site-packages/youtube_dl/extractor/youtube.py", line 1402, in <lambda>
    return lambda s: initial_function([s])
  File "/home/elonsatoshi/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 258, in resf
    res, abort = self.interpret_statement(stmt, local_vars)
  File "/home/elonsatoshi/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 56, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/home/elonsatoshi/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 92, in interpret_expression
    m.group('expr'), local_vars, allow_recursion - 1)
  File "/home/elonsatoshi/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 189, in interpret_expression
    m.group('x'), local_vars, allow_recursion - 1)
  File "/home/elonsatoshi/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 56, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/home/elonsatoshi/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 211, in interpret_expression
    raise ExtractorError('Unsupported JS expression %r' % expr)
youtube_dl.utils.ExtractorError: Unsupported JS expression '['; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see  https://yt-dl.org/update  on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
 (caused by ExtractorError("Unsupported JS expression '['; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see  https://yt-dl.org/update  on how 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; see  https://yt-dl.org/update  on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
Traceback (most recent call last):
  File "/home/elonsatoshi/.local/lib/python3.7/site-packages/youtube_dl/extractor/youtube.py", line 1426, in _decrypt_signature
    video_id, player_url, s
  File "/home/elonsatoshi/.local/lib/python3.7/site-packages/youtube_dl/extractor/youtube.py", line 1338, in _extract_signature_function
    cache_res = res(test_string)
  File "/home/elonsatoshi/.local/lib/python3.7/site-packages/youtube_dl/extractor/youtube.py", line 1402, in <lambda>
    return lambda s: initial_function([s])
  File "/home/elonsatoshi/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 258, in resf
    res, abort = self.interpret_statement(stmt, local_vars)
  File "/home/elonsatoshi/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 56, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/home/elonsatoshi/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 92, in interpret_expression
    m.group('expr'), local_vars, allow_recursion - 1)
  File "/home/elonsatoshi/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 189, in interpret_expression
    m.group('x'), local_vars, allow_recursion - 1)
  File "/home/elonsatoshi/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 56, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/home/elonsatoshi/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 211, in interpret_expression
    raise ExtractorError('Unsupported JS expression %r' % expr)
youtube_dl.utils.ExtractorError: Unsupported JS expression '['; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see  https://yt-dl.org/update  on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
Traceback (most recent call last):
  File "/home/elonsatoshi/.local/lib/python3.7/site-packages/youtube_dl/extractor/youtube.py", line 1426, in _decrypt_signature
    video_id, player_url, s
  File "/home/elonsatoshi/.local/lib/python3.7/site-packages/youtube_dl/extractor/youtube.py", line 1338, in _extract_signature_function
    cache_res = res(test_string)
  File "/home/elonsatoshi/.local/lib/python3.7/site-packages/youtube_dl/extractor/youtube.py", line 1402, in <lambda>
    return lambda s: initial_function([s])
  File "/home/elonsatoshi/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 258, in resf
    res, abort = self.interpret_statement(stmt, local_vars)
  File "/home/elonsatoshi/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 56, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/home/elonsatoshi/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 92, in interpret_expression
    m.group('expr'), local_vars, allow_recursion - 1)
  File "/home/elonsatoshi/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 189, in interpret_expression
    m.group('x'), local_vars, allow_recursion - 1)
  File "/home/elonsatoshi/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 56, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/home/elonsatoshi/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 211, in interpret_expression
    raise ExtractorError('Unsupported JS expression %r' % expr)
youtube_dl.utils.ExtractorError: Unsupported JS expression '['; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see  https://yt-dl.org/update  on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/elonsatoshi/.local/lib/python3.7/site-packages/youtube_dl/YoutubeDL.py", line 797, in extract_info
    ie_result = ie.extract(url)
  File "/home/elonsatoshi/.local/lib/python3.7/site-packages/youtube_dl/extractor/common.py", line 530, in extract
    ie_result = self._real_extract(url)
  File "/home/elonsatoshi/.local/lib/python3.7/site-packages/youtube_dl/extractor/youtube.py", line 2107, in _real_extract
    encrypted_sig, video_id, player_url, age_gate)
  File "/home/elonsatoshi/.local/lib/python3.7/site-packages/youtube_dl/extractor/youtube.py", line 1436, in _decrypt_signature
    'Signature extraction failed: ' + tb, cause=e)
youtube_dl.utils.ExtractorError: Signature extraction failed: Traceback (most recent call last):
  File "/home/elonsatoshi/.local/lib/python3.7/site-packages/youtube_dl/extractor/youtube.py", line 1426, in _decrypt_signature
    video_id, player_url, s
  File "/home/elonsatoshi/.local/lib/python3.7/site-packages/youtube_dl/extractor/youtube.py", line 1338, in _extract_signature_function
    cache_res = res(test_string)
  File "/home/elonsatoshi/.local/lib/python3.7/site-packages/youtube_dl/extractor/youtube.py", line 1402, in <lambda>
    return lambda s: initial_function([s])
  File "/home/elonsatoshi/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 258, in resf
    res, abort = self.interpret_statement(stmt, local_vars)
  File "/home/elonsatoshi/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 56, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/home/elonsatoshi/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 92, in interpret_expression
    m.group('expr'), local_vars, allow_recursion - 1)
  File "/home/elonsatoshi/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 189, in interpret_expression
    m.group('x'), local_vars, allow_recursion - 1)
  File "/home/elonsatoshi/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 56, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/home/elonsatoshi/.local/lib/python3.7/site-packages/youtube_dl/jsinterp.py", line 211, in interpret_expression
    raise ExtractorError('Unsupported JS expression %r' % expr)
youtube_dl.utils.ExtractorError: Unsupported JS expression '['; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see  https://yt-dl.org/update  on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
 (caused by ExtractorError("Unsupported JS expression '['; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see  https://yt-dl.org/update  on how 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; see  https://yt-dl.org/update  on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.

It sucks, I was downloading 15 hours of relaxing music for my dogs, and now I can only give them 6 hours. 😢

jackbergus · 2020-07-27T21:43:40Z

This also happened for https://youtu.be/01DEVVWG6RE. Seems that the json file has changed format.

afsharsafavi · 2020-07-27T21:44:48Z

same here
https://www.youtube.com/watch?v=1GiPMMxxgU4

splattadat · 2020-07-27T21:47:50Z

Duplicate of ...
#26137
#26136
#26134

Igetin changed the title ~~Signature extraction failed~~ Signature extraction failed (YouTube) Jul 27, 2020

Igetin changed the title ~~Signature extraction failed (YouTube)~~ Signature extraction failed on certain YouTube URL Jul 27, 2020

Igetin changed the title ~~Signature extraction failed on certain YouTube URL~~ Signature extraction fails on certain YouTube URL Jul 27, 2020

Igetin changed the title ~~Signature extraction fails on certain YouTube URL~~ Signature extraction fails on certain YouTube URLs Jul 27, 2020

CWftw mentioned this issue Jul 27, 2020

Signature extraction fails on certain YouTube URLs TeamNewPipe/NewPipeExtractor#376

Closed

This was referenced Jul 27, 2020

Signature extraction fails on certain YouTube URLs 0xced/XCDYouTubeKit#487

Closed

[STOP CREATING DUPLICATES] Cannot decrypt video URL error on every video TeamNewPipe/NewPipe#3951

Closed

Friz64 mentioned this issue Jul 27, 2020

Unsupported JS expression '[' #26136

Closed

5 of 6 tasks complete

splattadat mentioned this issue Jul 27, 2020

Receiving ExtractorError when using youtube-dl in python discord bot #26137

Closed

5 of 6 tasks complete

splattadat mentioned this issue Jul 27, 2020

YouTube Error downloading Vevo videos and many others #26134

Closed

1 of 1 task complete

dstftw closed this in e450f6c Jul 27, 2020

ytdl-org locked and limited conversation to collaborators Jul 27, 2020

ytdl-org / youtube-dl

Signature extraction fails on certain YouTube URLs #26135

Signature extraction fails on certain YouTube URLs #26135

Igetin commented Jul 27, 2020 •

edited

Friz64 commented Jul 27, 2020

qwertz19281 commented Jul 27, 2020

xdenyer commented Jul 27, 2020

Trenix25 commented Jul 27, 2020

qwertz19281 commented Jul 27, 2020 •

edited

ElonSatoshi commented Jul 27, 2020 •

edited

jackbergus commented Jul 27, 2020

afsharsafavi commented Jul 27, 2020

splattadat commented Jul 27, 2020

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Signature extraction fails on certain YouTube URLs #26135

Signature extraction fails on certain YouTube URLs #26135

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Igetin commented Jul 27, 2020 • edited

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Trenix25 commented Jul 27, 2020

qwertz19281 commented Jul 27, 2020 • edited

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Igetin commented Jul 27, 2020 •

edited

qwertz19281 commented Jul 27, 2020 •

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ElonSatoshi commented Jul 27, 2020 •

edited