Comment 6 for bug 1318363

On trusty:

$ youtube-dl https://www.youtube.com/watch?v=t0On9tbnKd8
[youtube] Setting language
[youtube] t0On9tbnKd8: Downloading webpage
[youtube] t0On9tbnKd8: Downloading video info webpage
[youtube] t0On9tbnKd8: Extracting video information
[youtube] t0On9tbnKd8: Encrypted signatures detected.
WARNING: Automatic signature extraction failed: Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 957, in _decrypt_signature
    video_id, player_url, len(s)
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 331, in _extract_signature_function
    player_type = id_m.group('ext')
AttributeError: 'NoneType' object has no attribute 'group'

WARNING: Warning: Falling back to static signature algorithm
WARNING: Automatic signature extraction failed: Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 957, in _decrypt_signature
    video_id, player_url, len(s)
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 331, in _extract_signature_function
    player_type = id_m.group('ext')
AttributeError: 'NoneType' object has no attribute 'group'

WARNING: Warning: Falling back to static signature algorithm
WARNING: Automatic signature extraction failed: Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 957, in _decrypt_signature
    video_id, player_url, len(s)
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 331, in _extract_signature_function
    player_type = id_m.group('ext')
AttributeError: 'NoneType' object has no attribute 'group'

WARNING: Warning: Falling back to static signature algorithm
WARNING: Automatic signature extraction failed: Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 957, in _decrypt_signature
    video_id, player_url, len(s)
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 331, in _extract_signature_function
    player_type = id_m.group('ext')
AttributeError: 'NoneType' object has no attribute 'group'

WARNING: Warning: Falling back to static signature algorithm
WARNING: Automatic signature extraction failed: Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 957, in _decrypt_signature
    video_id, player_url, len(s)
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 331, in _extract_signature_function
    player_type = id_m.group('ext')
AttributeError: 'NoneType' object has no attribute 'group'

WARNING: Warning: Falling back to static signature algorithm
WARNING: Automatic signature extraction failed: Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 957, in _decrypt_signature
    video_id, player_url, len(s)
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 331, in _extract_signature_function
    player_type = id_m.group('ext')
AttributeError: 'NoneType' object has no attribute 'group'

WARNING: Warning: Falling back to static signature algorithm
WARNING: Automatic signature extraction failed: Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 957, in _decrypt_signature
    video_id, player_url, len(s)
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 331, in _extract_signature_function
    player_type = id_m.group('ext')
AttributeError: 'NoneType' object has no attribute 'group'

WARNING: Warning: Falling back to static signature algorithm
WARNING: Automatic signature extraction failed: Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 957, in _decrypt_signature
    video_id, player_url, len(s)
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 331, in _extract_signature_function
    player_type = id_m.group('ext')
AttributeError: 'NoneType' object has no attribute 'group'

WARNING: Warning: Falling back to static signature algorithm
WARNING: Automatic signature extraction failed: Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 957, in _decrypt_signature
    video_id, player_url, len(s)
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 331, in _extract_signature_function
    player_type = id_m.group('ext')
AttributeError: 'NoneType' object has no attribute 'group'

WARNING: Warning: Falling back to static signature algorithm
WARNING: Automatic signature extraction failed: Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 957, in _decrypt_signature
    video_id, player_url, len(s)
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 331, in _extract_signature_function
    player_type = id_m.group('ext')
AttributeError: 'NoneType' object has no attribute 'group'

WARNING: Warning: Falling back to static signature algorithm
WARNING: Automatic signature extraction failed: Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 957, in _decrypt_signature
    video_id, player_url, len(s)
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 331, in _extract_signature_function
    player_type = id_m.group('ext')
AttributeError: 'NoneType' object has no attribute 'group'

WARNING: Warning: Falling back to static signature algorithm
WARNING: Automatic signature extraction failed: Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 957, in _decrypt_signature
    video_id, player_url, len(s)
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 331, in _extract_signature_function
    player_type = id_m.group('ext')
AttributeError: 'NoneType' object has no attribute 'group'

WARNING: Warning: Falling back to static signature algorithm
WARNING: Automatic signature extraction failed: Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 957, in _decrypt_signature
    video_id, player_url, len(s)
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 331, in _extract_signature_function
    player_type = id_m.group('ext')
AttributeError: 'NoneType' object has no attribute 'group'

WARNING: Warning: Falling back to static signature algorithm
WARNING: Automatic signature extraction failed: Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 957, in _decrypt_signature
    video_id, player_url, len(s)
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 331, in _extract_signature_function
    player_type = id_m.group('ext')
AttributeError: 'NoneType' object has no attribute 'group'

WARNING: Warning: Falling back to static signature algorithm
WARNING: Automatic signature extraction failed: Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 957, in _decrypt_signature
    video_id, player_url, len(s)
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 331, in _extract_signature_function
    player_type = id_m.group('ext')
AttributeError: 'NoneType' object has no attribute 'group'

WARNING: Warning: Falling back to static signature algorithm
WARNING: Automatic signature extraction failed: Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 957, in _decrypt_signature
    video_id, player_url, len(s)
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 331, in _extract_signature_function
    player_type = id_m.group('ext')
AttributeError: 'NoneType' object has no attribute 'group'

WARNING: Warning: Falling back to static signature algorithm
WARNING: Automatic signature extraction failed: Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 957, in _decrypt_signature
    video_id, player_url, len(s)
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 331, in _extract_signature_function
    player_type = id_m.group('ext')
AttributeError: 'NoneType' object has no attribute 'group'

WARNING: Warning: Falling back to static signature algorithm
ERROR: unable to download video data: HTTP Error 403: Forbidden