Unsupported JS expression 'oE["do"](a,67)'

[ivaneidel]

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Make sure you are using the latest version: run youtube-dl --version and ensure your version is 2017.05.14. If it's not read this FAQ entry and update. Issues with outdated version will be rejected.

• I've verified and I assure that I'm running youtube-dl 2017.05.14

Before submitting an issue make sure you have:

• At least skimmed through README and most notably FAQ and BUGS sections
• Searched the bugtracker for similar issues including closed ones

What is the purpose of your issue?

• Bug report (encountered problems with youtube-dl)
• Site support request (request for adding support for a new site)
• Feature request (request for a new functionality)
• Question
• Other

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If the purpose of this issue is a bug report, site support request or you are not completely sure provide the full verbose output as follows:

Add -v flag to your command line you run youtube-dl with, copy the whole output and insert it here. It should look similar to one below (replace it with your log inserted between triple ```):

$ youtube-dl -x --audio-format mp3 --audio-quality 0 "https://www.youtube.com/watch?v=nZFAKhwi_8Q&list=PLDXvuAdacTVIh-gRt2lumm_xSTC8N8m27" --verbose
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['-x', '--audio-format', 'mp3', '--audio-quality', '0', 'https://www.youtube.com/watch?v=nZFAKhwi_8Q&list=PLDXvuAdacTVIh-gRt2lumm_xSTC8N8m27', '--verbose']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2017.05.14
[debug] Python version 3.6.1 - Linux-4.10.13-1-ARCH-x86_64-with-arch
[debug] exe versions: ffmpeg 3.3, ffprobe 3.3, rtmpdump 2.4
[debug] Proxy map: {}
[youtube:playlist] Downloading playlist PLDXvuAdacTVIh-gRt2lumm_xSTC8N8m27 - add --no-playlist to just download video nZFAKhwi_8Q
[youtube:playlist] PLDXvuAdacTVIh-gRt2lumm_xSTC8N8m27: Downloading webpage
[download] Downloading playlist: Juan Quintero - Disco Solista
[youtube:playlist] playlist Juan Quintero - Disco Solista: Downloading 15 videos
[download] Downloading video 1 of 15
[youtube] nZFAKhwi_8Q: Downloading webpage
[youtube] nZFAKhwi_8Q: Downloading video info webpage
[youtube] nZFAKhwi_8Q: Extracting video information
WARNING: unable to extract uploader nickname
[youtube] {43} signature length 43.42, html5 player en_US-vflej9vR1
[youtube] nZFAKhwi_8Q: Downloading player https://www.youtube.com/yts/jsbin/player-en_US-vflej9vR1/base.js
ERROR: Signature extraction failed: Traceback (most recent call last):
  File "/usr/lib/python3.6/site-packages/youtube_dl/extractor/youtube.py", line 1162, in _decrypt_signature
    video_id, player_url, s
  File "/usr/lib/python3.6/site-packages/youtube_dl/extractor/youtube.py", line 1085, in _extract_signature_function
    cache_res = res(test_string)
  File "/usr/lib/python3.6/site-packages/youtube_dl/extractor/youtube.py", line 1138, in <lambda>
    return lambda s: initial_function([s])
  File "/usr/lib/python3.6/site-packages/youtube_dl/jsinterp.py", line 254, in resf
    res, abort = self.interpret_statement(stmt, local_vars)
  File "/usr/lib/python3.6/site-packages/youtube_dl/jsinterp.py", line 55, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/usr/lib/python3.6/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 'oE["do"](a,67)'; 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 \'oE["do"](a,67)\'; 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 "/usr/lib/python3.6/site-packages/youtube_dl/extractor/youtube.py", line 1162, in _decrypt_signature
    video_id, player_url, s
  File "/usr/lib/python3.6/site-packages/youtube_dl/extractor/youtube.py", line 1085, in _extract_signature_function
    cache_res = res(test_string)
  File "/usr/lib/python3.6/site-packages/youtube_dl/extractor/youtube.py", line 1138, in <lambda>
    return lambda s: initial_function([s])
  File "/usr/lib/python3.6/site-packages/youtube_dl/jsinterp.py", line 254, in resf
    res, abort = self.interpret_statement(stmt, local_vars)
  File "/usr/lib/python3.6/site-packages/youtube_dl/jsinterp.py", line 55, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/usr/lib/python3.6/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 'oE["do"](a,67)'; 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 "/usr/lib/python3.6/site-packages/youtube_dl/extractor/youtube.py", line 1162, in _decrypt_signature
    video_id, player_url, s
  File "/usr/lib/python3.6/site-packages/youtube_dl/extractor/youtube.py", line 1085, in _extract_signature_function
    cache_res = res(test_string)
  File "/usr/lib/python3.6/site-packages/youtube_dl/extractor/youtube.py", line 1138, in <lambda>
    return lambda s: initial_function([s])
  File "/usr/lib/python3.6/site-packages/youtube_dl/jsinterp.py", line 254, in resf
    res, abort = self.interpret_statement(stmt, local_vars)
  File "/usr/lib/python3.6/site-packages/youtube_dl/jsinterp.py", line 55, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/usr/lib/python3.6/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 'oE["do"](a,67)'; 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 "/usr/lib/python3.6/site-packages/youtube_dl/YoutubeDL.py", line 760, in extract_info
    ie_result = ie.extract(url)
  File "/usr/lib/python3.6/site-packages/youtube_dl/extractor/common.py", line 433, in extract
    ie_result = self._real_extract(url)
  File "/usr/lib/python3.6/site-packages/youtube_dl/extractor/youtube.py", line 1755, in _real_extract
    encrypted_sig, video_id, player_url, age_gate)
  File "/usr/lib/python3.6/site-packages/youtube_dl/extractor/youtube.py", line 1172, in _decrypt_signature
    'Signature extraction failed: ' + tb, cause=e)
youtube_dl.utils.ExtractorError: Signature extraction failed: Traceback (most recent call last):
  File "/usr/lib/python3.6/site-packages/youtube_dl/extractor/youtube.py", line 1162, in _decrypt_signature
    video_id, player_url, s
  File "/usr/lib/python3.6/site-packages/youtube_dl/extractor/youtube.py", line 1085, in _extract_signature_function
    cache_res = res(test_string)
  File "/usr/lib/python3.6/site-packages/youtube_dl/extractor/youtube.py", line 1138, in <lambda>
    return lambda s: initial_function([s])
  File "/usr/lib/python3.6/site-packages/youtube_dl/jsinterp.py", line 254, in resf
    res, abort = self.interpret_statement(stmt, local_vars)
  File "/usr/lib/python3.6/site-packages/youtube_dl/jsinterp.py", line 55, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/usr/lib/python3.6/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 'oE["do"](a,67)'; 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 \'oE["do"](a,67)\'; 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 of your issue, suggested solution and other information

I've updated youtube-dl and still get the error, i think it may be a new change made by youtube, i'd be glad if it could be checked