[youtube] ExtractorError: Could not find JS function u'Go.sH'

[gordon-quad]

youtube-dl --verbose http://youtu.be/zOtaxwGles0

gives

[debug] System config: []
[debug] User config: []
[debug] Command-line args: ['--verbose', 'http://youtu.be/zOtaxwGles0']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2014.07.24-gentoo_no_offensive_sites
[debug] Python version 2.7.7 - Linux-3.13.1-gentoo-x86_64-Intel-R-_Core-TM-_i5-2310_CPU_@_2.90GHz-with-debian-6.0.7
[debug] Proxy map: {}
[youtube] Setting language
[youtube] zOtaxwGles0: Downloading webpage
[youtube] zOtaxwGles0: Downloading video info webpage
[youtube] zOtaxwGles0: Extracting video information
[youtube] zOtaxwGles0: Encrypted signatures detected.
[youtube] encrypted signature length 84 (28.55), itag 22, html5 player en_US-vflCGk6yw\/html5player
[youtube] zOtaxwGles0: Downloading js player vflCGk6yw
WARNING: Writing cache to u'/home/user/.cache/youtube-dl/youtube-sigfuncs/js_vflCGk6yw_84.json' failed: Traceback (most recent call last):
  File "/usr/lib64/python2.7/site-packages/youtube_dl/extractor/youtube.py", line 392, in _extract_signature_function
    cache_res = res(test_string)
  File "/usr/lib64/python2.7/site-packages/youtube_dl/extractor/youtube.py", line 450, in <lambda>
    return lambda s: initial_function([s])
  File "/usr/lib64/python2.7/site-packages/youtube_dl/jsinterp.py", line 179, in resf
    res = self.interpret_statement(stmt, local_vars)
  File "/usr/lib64/python2.7/site-packages/youtube_dl/jsinterp.py", line 48, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/usr/lib64/python2.7/site-packages/youtube_dl/jsinterp.py", line 140, in interpret_expression
    self._functions[fname] = self.extract_function(fname)
  File "/usr/lib64/python2.7/site-packages/youtube_dl/jsinterp.py", line 170, in extract_function
    raise ExtractorError('Could not find JS function %r' % funcname)
ExtractorError: Could not find JS function u'Go.sH'; please report this issue on https://yt-dl.org/bug . Be sure to call youtube-dl with the --verbose flag and include its complete output. Make sure you are using the latest version; type  youtube-dl -U  to update.

ERROR: Automatic signature extraction failed: Traceback (most recent call last):
  File "/usr/lib64/python2.7/site-packages/youtube_dl/extractor/youtube.py", line 477, in _decrypt_signature
    return func(s)
  File "/usr/lib64/python2.7/site-packages/youtube_dl/extractor/youtube.py", line 450, in <lambda>
    return lambda s: initial_function([s])
  File "/usr/lib64/python2.7/site-packages/youtube_dl/jsinterp.py", line 179, in resf
    res = self.interpret_statement(stmt, local_vars)
  File "/usr/lib64/python2.7/site-packages/youtube_dl/jsinterp.py", line 48, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/usr/lib64/python2.7/site-packages/youtube_dl/jsinterp.py", line 140, in interpret_expression
    self._functions[fname] = self.extract_function(fname)
  File "/usr/lib64/python2.7/site-packages/youtube_dl/jsinterp.py", line 170, in extract_function
    raise ExtractorError('Could not find JS function %r' % funcname)
ExtractorError: Could not find JS function u'Go.sH'; please report this issue on https://yt-dl.org/bug . Be sure to call youtube-dl with the --verbose flag and include its complete output. Make sure you are using the latest version; type  youtube-dl -U  to update.
; please report this issue on https://yt-dl.org/bug . Be sure to call youtube-dl with the --verbose flag and include its complete output. Make sure you are using the latest version; type  youtube-dl -U  to update.
Traceback (most recent call last):
  File "/usr/lib64/python2.7/site-packages/youtube_dl/extractor/youtube.py", line 477, in _decrypt_signature
    return func(s)
  File "/usr/lib64/python2.7/site-packages/youtube_dl/extractor/youtube.py", line 450, in <lambda>
    return lambda s: initial_function([s])
  File "/usr/lib64/python2.7/site-packages/youtube_dl/jsinterp.py", line 179, in resf
    res = self.interpret_statement(stmt, local_vars)
  File "/usr/lib64/python2.7/site-packages/youtube_dl/jsinterp.py", line 48, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/usr/lib64/python2.7/site-packages/youtube_dl/jsinterp.py", line 140, in interpret_expression
    self._functions[fname] = self.extract_function(fname)
  File "/usr/lib64/python2.7/site-packages/youtube_dl/jsinterp.py", line 170, in extract_function
    raise ExtractorError('Could not find JS function %r' % funcname)
ExtractorError: Could not find JS function u'Go.sH'; please report this issue on https://yt-dl.org/bug . Be sure to call youtube-dl with the --verbose flag and include its complete output. Make sure you are using the latest version; type  youtube-dl -U  to update.
Traceback (most recent call last):
  File "/usr/lib64/python2.7/site-packages/youtube_dl/YoutubeDL.py", line 516, in extract_info
    ie_result = ie.extract(url)
  File "/usr/lib64/python2.7/site-packages/youtube_dl/extractor/common.py", line 169, in extract
    return self._real_extract(url)
  File "/usr/lib64/python2.7/site-packages/youtube_dl/extractor/youtube.py", line 848, in _real_extract
    encrypted_sig, video_id, player_url, age_gate)
  File "/usr/lib64/python2.7/site-packages/youtube_dl/extractor/youtube.py", line 481, in _decrypt_signature
    u'Automatic signature extraction failed: ' + tb, cause=e)
ExtractorError: Automatic signature extraction failed: Traceback (most recent call last):
  File "/usr/lib64/python2.7/site-packages/youtube_dl/extractor/youtube.py", line 477, in _decrypt_signature
    return func(s)
  File "/usr/lib64/python2.7/site-packages/youtube_dl/extractor/youtube.py", line 450, in <lambda>
    return lambda s: initial_function([s])
  File "/usr/lib64/python2.7/site-packages/youtube_dl/jsinterp.py", line 179, in resf
    res = self.interpret_statement(stmt, local_vars)
  File "/usr/lib64/python2.7/site-packages/youtube_dl/jsinterp.py", line 48, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/usr/lib64/python2.7/site-packages/youtube_dl/jsinterp.py", line 140, in interpret_expression
    self._functions[fname] = self.extract_function(fname)
  File "/usr/lib64/python2.7/site-packages/youtube_dl/jsinterp.py", line 170, in extract_function
    raise ExtractorError('Could not find JS function %r' % funcname)
ExtractorError: Could not find JS function u'Go.sH'; please report this issue on https://yt-dl.org/bug . Be sure to call youtube-dl with the --verbose flag and include its complete output. Make sure you are using the latest version; type  youtube-dl -U  to update.
; please report this issue on https://yt-dl.org/bug . Be sure to call youtube-dl with the --verbose flag and include its complete output. Make sure you are using the latest version; type  youtube-dl -U  to update.

Tried on several machines, gives same result.

[phihag]

You are using a custom version of youtube-dl (note the -gentoo_no_offensive_sites in the version header).

Contact the maintainer of that custom version (i.e. the gentoo project) and request a version bump (the YouTube player changed on 2014-07-24, so you need youtube-dl 2014.07.25 or newer for many YouTube videos)).

Alternatively, uninstall the packaged version and follow our manual installation instructions.