[FFmpeg-trac] #2882(undetermined:open): ffmpeg can't save h264 stream from v4l2 webcam into file without recoding (was: ffmpeg can't save h264 stream from webcam into file without recoding)

FFmpeg trac at avcodec.org
Wed Aug 21 13:02:09 CEST 2013


#2882: ffmpeg can't save h264 stream from v4l2 webcam into file without recoding
-------------------------------------+-------------------------------------
             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
-------------------------------------+-------------------------------------

Comment (by cehoyos):

 Replying to [comment:10 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.

 The problem reported in this ticket (Remuxing h264 from v4l2 device does
 not work) was reported many times on the mailing list, the problem afaict
 is that no developer owns a device so nobody can test.

 Of course other things (like reencoding or not using h264 input in the
 first place) will work fine but this is not what was requested / reported.

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2882#comment:11>
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