[FFmpeg-trac] #2882(undetermined:open): ffmpeg can't save h264 stream from webcam into file without recoding

[FFmpeg]

#2882: ffmpeg can't save h264 stream from webcam into file without recoding
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             Reporter:  pchel        |                    Owner:
                 Type:  defect       |                   Status:  open
             Priority:  normal       |                Component:
              Version:  git-master   |  undetermined
             Keywords:  v4l2 h264    |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
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Comment (by xlinkz0):

 Does the webcam specification say that it can stream yuvj420p ?

 As far as I understand you are setting the option on the input. I do not
 think you can just request a different stream like that from a device.

 You modified the simple command I gave you, does the simple command work?
 Are you only dissatisfied that it is not the proper format? If so you
 might want to reconsider transcoding it on the fly with a fast x264 preset
 that will work in real time for most mid-range processors.

 Unless you can prove that you can receive in any other way a yuvj420p
 directly from the webcam without any software transcoding try :

 {{{
 ffmpeg -y -i /dev/video0 -f v4l2 -c:v libx264 -preset superfast out.mkv
 }}}

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2882#comment:10>
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