ERROR: Signature extraction failed: WARNING: unable to extract html5 player

[somercet]

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Make sure you are using the latest version: run youtube-dl --version and ensure your version is 2017.04.26. If it's not read this FAQ entry and update. Issues with outdated version will be rejected.

• [x ] I've verified and I assure that I'm running youtube-dl 2017.04.26

Before submitting an issue make sure you have:

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

What is the purpose of your issue?

• [x ] 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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The following sections concretize particular purposed issues, you can erase any section (the contents between triple ---) not applicable to your issue

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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 ```):

host ~ $ youtube-dl https://www.youtube.com/watch?v=Frqg0najQWs --verbose
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['https://www.youtube.com/watch?v=Frqg0najQWs', '--verbose']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2017.04.26
[debug] Python version 3.6.1 - Linux-4.10.11-1-ARCH-x86_64-with-arch
[debug] exe versions: ffmpeg 3.3, ffprobe 3.3, rtmpdump 2.4
[debug] Proxy map: {}
[youtube] Frqg0najQWs: Downloading webpage
[youtube] Frqg0najQWs: Downloading video info webpage
[youtube] Frqg0najQWs: Extracting video information
WARNING: unable to extract html5 player; 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.
[youtube] {43} signature length 40.40, html5 player None
ERROR: Signature extraction failed: Traceback (most recent call last):
  File "/usr/lib/python3.6/site-packages/youtube_dl/extractor/youtube.py", line 1081, in _decrypt_signature
    video_id, player_url, s
  File "/usr/lib/python3.6/site-packages/youtube_dl/extractor/youtube.py", line 969, in _extract_signature_function
    raise ExtractorError('Cannot identify player %r' % player_url)
youtube_dl.utils.ExtractorError: Cannot identify player 'https://www.youtube.com/yts/jsbin/player-vflppxuSE/en_US/base.js'; 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("Cannot identify player 'https://www.youtube.com/yts/jsbin/player-vflppxuSE/en_US/base.js'; 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 1081, in _decrypt_signature
    video_id, player_url, s
  File "/usr/lib/python3.6/site-packages/youtube_dl/extractor/youtube.py", line 969, in _extract_signature_function
    raise ExtractorError('Cannot identify player %r' % player_url)
youtube_dl.utils.ExtractorError: Cannot identify player 'https://www.youtube.com/yts/jsbin/player-vflppxuSE/en_US/base.js'; 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 1081, in _decrypt_signature
    video_id, player_url, s
  File "/usr/lib/python3.6/site-packages/youtube_dl/extractor/youtube.py", line 969, in _extract_signature_function
    raise ExtractorError('Cannot identify player %r' % player_url)
youtube_dl.utils.ExtractorError: Cannot identify player 'https://www.youtube.com/yts/jsbin/player-vflppxuSE/en_US/base.js'; 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 429, in extract
    ie_result = self._real_extract(url)
  File "/usr/lib/python3.6/site-packages/youtube_dl/extractor/youtube.py", line 1642, in _real_extract
    encrypted_sig, video_id, player_url, age_gate)
  File "/usr/lib/python3.6/site-packages/youtube_dl/extractor/youtube.py", line 1091, 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 1081, in _decrypt_signature
    video_id, player_url, s
  File "/usr/lib/python3.6/site-packages/youtube_dl/extractor/youtube.py", line 969, in _extract_signature_function
    raise ExtractorError('Cannot identify player %r' % player_url)
youtube_dl.utils.ExtractorError: Cannot identify player 'https://www.youtube.com/yts/jsbin/player-vflppxuSE/en_US/base.js'; 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("Cannot identify player 'https://www.youtube.com/yts/jsbin/player-vflppxuSE/en_US/base.js'; 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.

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Description of your issue, suggested solution and other information

The Youtube video is only two years old. No other videos fail so far with this version of YT-DL.

[Phxntxm]

#12885
The issue literally posted right before yours.