Automatic signature extraction failed: Traceback (most recent call last):

[ghost]

Hello!
I am use latest version of youtube-dl (2015.11.10) but some video cant not download get bellow error
"Automatic signature extraction failed: Traceback (most recent call last): "
i try: "youtube-dl https://www.youtube.com/watch?v=ffmTK9uKM_k"

when i install Version 2014.06.19 of youtube-dl and try for download then showing blank page because signature value is can not get full, some text missing from signature value so get error.

• Request To Developer-> Please fix signature value problem in Latest version of youtube-dl.
  -Thanks

[dstftw]

Post the full output of youtube-dl when run with --verbose option.

[ghost]

[debug] System config: []
[debug] User config: []
[debug] Command-line args: ['--verbose']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2014.06.19
[debug] Python version 2.6.6 - Linux-3.14.32-xxxx-grs-ipv6-32-i686-with-centos-6.6-Final
[debug] Proxy map: {}
Usage: youtube-dl [options] url [url...]

[dstftw]

Post the output of youtube-dl https://www.youtube.com/watch?v=ffmTK9uKM_k -v when you run with latest version.

[ghost]

Thanks my big brother. When update youtube-dl then fix the problem. 4 hours ago i 3 times update but get same problem so i contact here. may be today's latest version is update few minutes ago.
i need another help.
how to get c.docs.google.com url in downloading url?
Ex. http://ytapi.com/?format=direct&vid=ffmTK9uKM_k&itag=18
currently i get googlevideo.com

[dstftw]

Open a new issue for different problem.