Bug Report

[genericpersona]

[debug] System config: []
[debug] User config: []
[debug] Command-line args: ['-x', '--audio-format', 'mp3', '--verbose', 'https://www.youtube.com/watch?v=8rr7D0UsPos']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2014.07.24
[debug] Python version 3.4.1 - Linux-3.14.13-1-lts-x86_64-with-arch
[debug] Proxy map: {}
[youtube] Setting language
[youtube] 8rr7D0UsPos: Downloading webpage
[youtube] 8rr7D0UsPos: Downloading video info webpage
[youtube] 8rr7D0UsPos: Extracting video information
[youtube] 8rr7D0UsPos: Encrypted signatures detected.
[youtube] encrypted signature length 84 (28.55), itag 43, html5 player en_US-vflCGk6yw/html5player
[youtube] 8rr7D0UsPos: Downloading js player vflCGk6yw
WARNING: Writing cache to '/home/g0/.cache/youtube-dl/youtube-sigfuncs/js_vflCGk6yw_84.json' failed: Traceback (most recent call last):
File "/usr/lib/python3.4/site-packages/youtube_dl/extractor/youtube.py", line 392, in _extract_signature_function
cache_res = res(test_string)
File "/usr/lib/python3.4/site-packages/youtube_dl/extractor/youtube.py", line 450, in
return lambda s: initial_function([s])
File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 179, in resf
res = self.interpret_statement(stmt, local_vars)
File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 48, in interpret_statement
v = self.interpret_expression(expr, local_vars, allow_recursion)
File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 140, in interpret_expression
self._functions[fname] = self.extract_function(fname)
File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 170, in extract_function
raise ExtractorError('Could not find JS function %r' % funcname)
youtube_dl.utils.ExtractorError: Could not find JS function '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/lib/python3.4/site-packages/youtube_dl/extractor/youtube.py", line 477, in _decrypt_signature
return func(s)
File "/usr/lib/python3.4/site-packages/youtube_dl/extractor/youtube.py", line 450, in
return lambda s: initial_function([s])
File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 179, in resf
res = self.interpret_statement(stmt, local_vars)
File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 48, in interpret_statement
v = self.interpret_expression(expr, local_vars, allow_recursion)
File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 140, in interpret_expression
self._functions[fname] = self.extract_function(fname)
File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 170, in extract_function
raise ExtractorError('Could not find JS function %r' % funcname)
youtube_dl.utils.ExtractorError: Could not find JS function '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/lib/python3.4/site-packages/youtube_dl/extractor/youtube.py", line 477, in _decrypt_signature
return func(s)
File "/usr/lib/python3.4/site-packages/youtube_dl/extractor/youtube.py", line 450, in
return lambda s: initial_function([s])
File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 179, in resf
res = self.interpret_statement(stmt, local_vars)
File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 48, in interpret_statement
v = self.interpret_expression(expr, local_vars, allow_recursion)
File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 140, in interpret_expression
self._functions[fname] = self.extract_function(fname)
File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 170, in extract_function
raise ExtractorError('Could not find JS function %r' % funcname)
youtube_dl.utils.ExtractorError: Could not find JS function '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/lib/python3.4/site-packages/youtube_dl/extractor/youtube.py", line 477, in _decrypt_signature
return func(s)
File "/usr/lib/python3.4/site-packages/youtube_dl/extractor/youtube.py", line 450, in
return lambda s: initial_function([s])
File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 179, in resf
res = self.interpret_statement(stmt, local_vars)
File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 48, in interpret_statement
v = self.interpret_expression(expr, local_vars, allow_recursion)
File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 140, in interpret_expression
self._functions[fname] = self.extract_function(fname)
File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 170, in extract_function
raise ExtractorError('Could not find JS function %r' % funcname)
youtube_dl.utils.ExtractorError: Could not find JS function '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.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/usr/lib/python3.4/site-packages/youtube_dl/YoutubeDL.py", line 516, in extract_info
ie_result = ie.extract(url)
File "/usr/lib/python3.4/site-packages/youtube_dl/extractor/common.py", line 169, in extract
return self._real_extract(url)
File "/usr/lib/python3.4/site-packages/youtube_dl/extractor/youtube.py", line 848, in _real_extract
encrypted_sig, video_id, player_url, age_gate)
File "/usr/lib/python3.4/site-packages/youtube_dl/extractor/youtube.py", line 481, in _decrypt_signature
u'Automatic signature extraction failed: ' + tb, cause=e)
youtube_dl.utils.ExtractorError: Automatic signature extraction failed: Traceback (most recent call last):
File "/usr/lib/python3.4/site-packages/youtube_dl/extractor/youtube.py", line 477, in _decrypt_signature
return func(s)
File "/usr/lib/python3.4/site-packages/youtube_dl/extractor/youtube.py", line 450, in
return lambda s: initial_function([s])
File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 179, in resf
res = self.interpret_statement(stmt, local_vars)
File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 48, in interpret_statement
v = self.interpret_expression(expr, local_vars, allow_recursion)
File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 140, in interpret_expression
self._functions[fname] = self.extract_function(fname)
File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 170, in extract_function
raise ExtractorError('Could not find JS function %r' % funcname)
youtube_dl.utils.ExtractorError: Could not find JS function 'Go.sH';

[phihag]

You are using an outdated version of youtube-dl. YouTube changed their player on 2014-07-25, so you'll need at least youtube-dl version 2014.07.25 (or newer).

It looks like you installed youtube-dl with a package manager (most likely either pacman or pip). You can use that package manager to update youtube-dl (you may need to contact the package maintainer though, and request an update).

Alternatively, uninstall the youtube package and follow our manual installation instructions. From then on, you'll be able to update with sudo youtube-dl -U.