Could not find JS function u'ur'

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$ /usr/local/bin/youtube-dl -v  https://www.youtube.com/watch?v=QL2CCeWZWQI
[debug] System config: []
[debug] User config: [u'-f', u'bestvideo[ext=mp4]+bestaudio[ext=m4a]/mp4']
[debug] Command-line args: [u'-v', u'https://www.youtube.com/watch?v=QL2CCeWZWQI']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2016.06.23
[debug] Python version 2.7.10 - Darwin-15.5.0-x86_64-i386-64bit
[debug] exe versions: ffmpeg 2.8.6, ffprobe 2.8.6
[debug] Proxy map: {}
[youtube] QL2CCeWZWQI: Downloading webpage
[youtube] QL2CCeWZWQI: Downloading video info webpage
[youtube] QL2CCeWZWQI: Extracting video information
[youtube] {22} signature length 40.43, html5 player en_US-vflkX1eCa
[youtube] QL2CCeWZWQI: Downloading player https://s.ytimg.com/yts/jsbin/player-en_US-vflkX1eCa/base.js
ERROR: Signature extraction failed: Traceback (most recent call last):
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 997, in _decrypt_signature
    video_id, player_url, s
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 912, in _extract_signature_function
    res = self._parse_sig_js(code)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 975, in _parse_sig_js
    initial_function = jsi.extract_function(funcname)
  File "/usr/local/bin/youtube-dl/youtube_dl/jsinterp.py", line 241, in extract_function
    raise ExtractorError('Could not find JS function %r' % funcname)
ExtractorError: Could not find JS function u'ur'; 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"Could not find JS function u'ur'; 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 997, in _decrypt_signature
    video_id, player_url, s
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 912, in _extract_signature_function
    res = self._parse_sig_js(code)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 975, in _parse_sig_js
    initial_function = jsi.extract_function(funcname)
  File "/usr/local/bin/youtube-dl/youtube_dl/jsinterp.py", line 241, in extract_function
    raise ExtractorError('Could not find JS function %r' % funcname)
ExtractorError: Could not find JS function u'ur'; 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 676, in extract_info
    ie_result = ie.extract(url)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 343, in extract
    return self._real_extract(url)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 1570, in _real_extract
    encrypted_sig, video_id, player_url, age_gate)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 1007, 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 997, in _decrypt_signature
    video_id, player_url, s
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 912, in _extract_signature_function
    res = self._parse_sig_js(code)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 975, in _parse_sig_js
    initial_function = jsi.extract_function(funcname)
  File "/usr/local/bin/youtube-dl/youtube_dl/jsinterp.py", line 241, in extract_function
    raise ExtractorError('Could not find JS function %r' % funcname)
ExtractorError: Could not find JS function u'ur'; 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"Could not find JS function u'ur'; 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.
...

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### Description of your *issue*, suggested solution and other information

Tried to download this video: https://www.youtube.com/watch?v=QL2CCeWZWQI and always get the "Could not find JS function u'ur'" error. I've updated to the latest version and that has not resolved anything. Other videos are downloading fine.

[jsbueno]

Same thing around here.

[dathan]

Also have this same issue:

/usr/local/bin/youtube-dl -v --verbose --socket-timeout 10 --max-filesize 500m -o ‘/mnt/ephemeral/workspace/youtubeJ5dYZ6HuOV’ -f ‘bestvideo[ext=mp4][height<=240]+bestaudio[ext=m4a]’ https://www.youtube.com/watch?v=QxsmWxxouIM Mem: 5.5 MB [debug] System config: [] [debug] User config: [] [debug] Command-line args: [u’-v’, u’–verbose’, u’–socket-timeout’, u’10’, u’–max-filesize’, u’500m’, u’-o’, u’/mnt/ephemeral/workspace/youtubeJ5dYZ6HuOV’, u’-f’, u’bestvideo[ext=mp4][height<=240]+bestaudio[ext=m4a]‘, u’https://www.youtube.com/watch?v=QxsmWxxouIM’] [debug] Encodings: locale UTF-8, fs UTF-8, out None, pref UTF-8 [debug] youtube-dl version 2016.05.01 [debug] Python version 2.6.6 - Linux-2.6.32-358.14.1.el6.x86_64-x86_64-with-redhat-6.7-Santiago [debug] exe versions: avprobe v12_dev0-2090-g4d05e93, ffmpeg git-2016-05-10-6c44696, ffprobe git-2016-05-10-6c44696 [debug] Proxy map: {} ERROR: Signature extraction failed: Traceback (most recent call last): File “/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py”, line 995, in _decrypt_signature video_id, player_url, s File “/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py”, line 910, in _extract_signature_function res = self._parse_sig_js(code) File “/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py”, line 973, in _parse_sig_js initial_function = jsi.extract_function(funcname) File “/usr/local/bin/youtube-dl/youtube_dl/jsinterp.py”, line 241, in extract_function raise ExtractorError(‘Could not find JS function %r’ % funcname) ExtractorError: Could not find JS function u’ur’; 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"Could not find JS function u’ur’; 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 995, in _decrypt_signature video_id, player_url, s File “/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py”, line 910, in _extract_signature_function res = self._parse_sig_js(code) File “/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py”, line 973, in _parse_sig_js initial_function = jsi.extract_function(funcname) File “/usr/local/bin/youtube-dl/youtube_dl/jsinterp.py”, line 241, in extract_function raise ExtractorError(‘Could not find JS function %r’ % funcname) ExtractorError: Could not find JS function u’ur’; 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 673, in extract_info ie_result = ie.extract(url) File “/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py”, line 341, in extract return self._real_extract(url) File “/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py”, line 1568, in _real_extract encrypted_sig, video_id, player_url, age_gate) File “/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py”, line 1005, 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 995, in _decrypt_signature video_id, player_url, s File “/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py”, line 910, in _extract_signature_function res = self._parse_sig_js(code) File “/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py”, line 973, in _parse_sig_js initial_function = jsi.extract_function(funcname) File “/usr/local/bin/youtube-dl/youtube_dl/jsinterp.py”, line 241, in extract_function raise ExtractorError(‘Could not find JS function %r’ % funcname) ExtractorError: Could not find JS function u’ur’; 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"Could not find JS function u’ur’; 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.