Crash

[mcepl]

matej@wycliff: ~$ youtube-dl --verbose 'http://www.youtube.com/watch?v=X86SgLwFdqw'
[debug] System config: ['--prefer-free-formats']
[debug] User config: []
[debug] Command-line args: ['--verbose', 'http://www.youtube.com/watch?v=X86SgLwFdqw']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2014.07.11.3
[debug] Python version 2.7.5 - Linux-3.10.0-123.el7.x86_64-x86_64-with-redhat-7.0-Maipo
[debug] Proxy map: {}
[youtube] Setting language
[youtube] X86SgLwFdqw: Downloading webpage
[youtube] X86SgLwFdqw: Downloading video info webpage
[youtube] X86SgLwFdqw: Extracting video information
[youtube] X86SgLwFdqw: Encrypted signatures detected.
[youtube] encrypted signature length 88 (44.43), itag 43, html5 player en_US-vflqZIm5b
[youtube] X86SgLwFdqw: Downloading js player vflqZIm5b
WARNING: Writing cache to u'/home/matej/.cache/youtube-dl/youtube-sigfuncs/js_vflqZIm5b_88.json' failed: Traceback (most recent call last):
  File "/usr/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 391, in _extract_signature_function
    cache_res = res(test_string)
  File "/usr/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 449, in <lambda>
    return lambda s: initial_function([s])
  File "/usr/bin/youtube-dl/youtube_dl/jsinterp.py", line 113, in resf
    res = self.interpret_statement(stmt, local_vars)
  File "/usr/bin/youtube-dl/youtube_dl/jsinterp.py", line 45, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/usr/bin/youtube-dl/youtube_dl/jsinterp.py", line 58, in interpret_expression
    val = local_vars[m.group('in')]
KeyError: u'lo'

ERROR: Automatic signature extraction failed: Traceback (most recent call last):
  File "/usr/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 883, in _decrypt_signature
    return func(s)
  File "/usr/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 449, in <lambda>
    return lambda s: initial_function([s])
  File "/usr/bin/youtube-dl/youtube_dl/jsinterp.py", line 113, in resf
    res = self.interpret_statement(stmt, local_vars)
  File "/usr/bin/youtube-dl/youtube_dl/jsinterp.py", line 45, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/usr/bin/youtube-dl/youtube_dl/jsinterp.py", line 58, in interpret_expression
    val = local_vars[m.group('in')]
KeyError: u'lo'
; 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/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 883, in _decrypt_signature
    return func(s)
  File "/usr/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 449, in <lambda>
    return lambda s: initial_function([s])
  File "/usr/bin/youtube-dl/youtube_dl/jsinterp.py", line 113, in resf
    res = self.interpret_statement(stmt, local_vars)
  File "/usr/bin/youtube-dl/youtube_dl/jsinterp.py", line 45, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/usr/bin/youtube-dl/youtube_dl/jsinterp.py", line 58, in interpret_expression
    val = local_vars[m.group('in')]
KeyError: u'lo'
Traceback (most recent call last):
  File "/usr/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 516, in extract_info
    ie_result = ie.extract(url)
  File "/usr/bin/youtube-dl/youtube_dl/extractor/common.py", line 168, in extract
    return self._real_extract(url)
  File "/usr/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 1249, in _real_extract
    encrypted_sig, video_id, player_url, age_gate)
  File "/usr/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 887, in _decrypt_signature
    u'Automatic signature extraction failed: ' + tb, cause=e)
ExtractorError: Automatic signature extraction failed: Traceback (most recent call last):
  File "/usr/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 883, in _decrypt_signature
    return func(s)
  File "/usr/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 449, in <lambda>
    return lambda s: initial_function([s])
  File "/usr/bin/youtube-dl/youtube_dl/jsinterp.py", line 113, in resf
    res = self.interpret_statement(stmt, local_vars)
  File "/usr/bin/youtube-dl/youtube_dl/jsinterp.py", line 45, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/usr/bin/youtube-dl/youtube_dl/jsinterp.py", line 58, in interpret_expression
    val = local_vars[m.group('in')]
KeyError: u'lo'
; 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.

matej@wycliff: ~$ 

[phihag]

Make sure you are using the latest version; type sudo youtube-dl -U to update. Since YouTube changed their player on July 15th, 2014, only youtube-dl version 2014.07.15 and newer supports the affected videos.