RegexNotFoundError: Unable to extract Initial JS player signature function name

[rghammonds]

As requested, here is the full output from >youtube-dl --verbose https://www.youtube.com/watch?v=1T5NuI6Ai-o

Not sure why the error message is repeated - but since you asked for everything ...

youtube-dl --verbose https://www.youtube.com/watch?v=1T5NuI6Ai-o
[debug] System config: []
[debug] User config: []
[debug] Command-line args: ['--verbose', 'https://www.youtube.com/watch?v=1T5NuI6Ai-o']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2014.11.09
[debug] Git HEAD: b11f75b
[debug] Python version 2.7.8 - Darwin-14.1.0-x86_64-i386-64bit
[debug] exe versions: ffmpeg 2.4.3, ffprobe 2.4.3
[debug] Proxy map: {}
[youtube] Confirming age
[youtube] 1T5NuI6Ai-o: Downloading webpage
[youtube] 1T5NuI6Ai-o: Downloading video info webpage
[youtube] 1T5NuI6Ai-o: Extracting video information
[youtube] 1T5NuI6Ai-o: Encrypted signatures detected.
[youtube] {22} signature length 43.40, html5 player en_US-vfl5_7-l5
[youtube] 1T5NuI6Ai-o: Downloading js player l5
ERROR: Signature extraction failed: Traceback (most recent call last):
File "/usr/local/lib/python2.7/site-packages/youtube_dl/extractor/youtube.py", line 539, in _decrypt_signature
video_id, player_url, s
File "/usr/local/lib/python2.7/site-packages/youtube_dl/extractor/youtube.py", line 453, in _extract_signature_function
res = self._parse_sig_js(code)
File "/usr/local/lib/python2.7/site-packages/youtube_dl/extractor/youtube.py", line 514, in _parse_sig_js
'Initial JS player signature function name')
File "/usr/local/lib/python2.7/site-packages/youtube_dl/extractor/common.py", line 436, in _search_regex
raise RegexNotFoundError('Unable to extract %s' % _name)
RegexNotFoundError: Unable to extract Initial JS player signature function name; 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.
(caused by RegexNotFoundError(u'Unable to extract \x1b[0;34mInitial JS player signature function name\x1b[0m; 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/local/lib/python2.7/site-packages/youtube_dl/extractor/youtube.py", line 539, in _decrypt_signature
video_id, player_url, s
File "/usr/local/lib/python2.7/site-packages/youtube_dl/extractor/youtube.py", line 453, in _extract_signature_function
res = self._parse_sig_js(code)
File "/usr/local/lib/python2.7/site-packages/youtube_dl/extractor/youtube.py", line 514, in _parse_sig_js
'Initial JS player signature function name')
File "/usr/local/lib/python2.7/site-packages/youtube_dl/extractor/common.py", line 436, in _search_regex
raise RegexNotFoundError('Unable to extract %s' % _name)
RegexNotFoundError: Unable to extract Initial JS player signature function name; 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/local/lib/python2.7/site-packages/youtube_dl/YoutubeDL.py", line 536, in extract_info
ie_result = ie.extract(url)
File "/usr/local/lib/python2.7/site-packages/youtube_dl/extractor/common.py", line 199, in extract
return self._real_extract(url)
File "/usr/local/lib/python2.7/site-packages/youtube_dl/extractor/youtube.py", line 934, in _real_extract
encrypted_sig, video_id, player_url, age_gate)
File "/usr/local/lib/python2.7/site-packages/youtube_dl/extractor/youtube.py", line 549, in _decrypt_signature
'Signature extraction failed: ' + tb, cause=e)
ExtractorError: Signature extraction failed: Traceback (most recent call last):
File "/usr/local/lib/python2.7/site-packages/youtube_dl/extractor/youtube.py", line 539, in _decrypt_signature
video_id, player_url, s
File "/usr/local/lib/python2.7/site-packages/youtube_dl/extractor/youtube.py", line 453, in _extract_signature_function
res = self._parse_sig_js(code)
File "/usr/local/lib/python2.7/site-packages/youtube_dl/extractor/youtube.py", line 514, in _parse_sig_js
'Initial JS player signature function name')
File "/usr/local/lib/python2.7/site-packages/youtube_dl/extractor/common.py", line 436, in _search_regex
raise RegexNotFoundError('Unable to extract %s' % _name)
RegexNotFoundError: Unable to extract Initial JS player signature function name; 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.
(caused by RegexNotFoundError(u'Unable to extract \x1b[0;34mInitial JS player signature function name\x1b[0m; 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.

[phihag]

Thank you for the report. YouTube changed their player on November 13th, so you'll need at least youtube-dl 2014.11.13 to play all YouTube videos. See our FAQ if you have trouble updating.