[FFmpeg-trac] #2410(undetermined:new): ffmpeg down with video4linux2.

FFmpeg trac at avcodec.org
Fri Mar 29 06:32:47 CET 2013


#2410: ffmpeg down with video4linux2.
-------------------------------------+-------------------------------------
             Reporter:  dinhka       |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  unspecified  |  undetermined
             Keywords:  v4l2         |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
-------------------------------------+-------------------------------------

Comment (by dinhka):

 Replying to [comment:4 cehoyos]:
 > Did you already try to remove "-pix_fmt yuv420p" ?
 > And please add the output for the following command:
 > $ ffmpeg -list_formats all -f v4l2 -i /dev/video0

 Hi,

   1. remove -pix_fmt yuv420p:
      ffmpeg -f video4linux2 -i /dev/video0  -vcodec mpeg4 -b:v 1200k -y
 test.avi
 ffmpeg version N-51426-gdd17843 Copyright (c) 2000-2013 the FFmpeg
 developers
   built on Mar 29 2013 00:22:28 with gcc 4.4.7 (GCC) 20120313 (Red Hat
 4.4.7-3)
   configuration: --enable-version3 --enable-libopencore-amrnb --enable-
 libopencore-amrwb --enable-avfilter --enable-nonfree --enable-libmp3lame
 --enable-gpl --enable-libfaac --enable-libx264 --enable-pthreads
 --disable-stripping --enable-libass --extra-cflags=-I/usr/local/include
 --disable-debug
   libavutil      52. 22.101 / 52. 22.101
   libavcodec     55.  2.100 / 55.  2.100
   libavformat    55.  0.100 / 55.  0.100
   libavdevice    55.  0.100 / 55.  0.100
   libavfilter     3. 48.105 /  3. 48.105
   libswscale      2.  2.100 /  2.  2.100
   libswresample   0. 17.102 /  0. 17.102
   libpostproc    52.  2.100 / 52.  2.100
 [video4linux2,v4l2 @ 0x9ea2420] ioctl(VIDIOC_G_PARM): Inappropriate ioctl
 for device
 /dev/video0: Inappropriate ioctl for device

   2.
    ffmpeg -list_formats all -f v4l2 -i /dev/video0  -vcodec mpeg4 -b:v
 1200k -y test.avi
 ffmpeg version N-51426-gdd17843 Copyright (c) 2000-2013 the FFmpeg
 developers
   built on Mar 29 2013 00:22:28 with gcc 4.4.7 (GCC) 20120313 (Red Hat
 4.4.7-3)
   configuration: --enable-version3 --enable-libopencore-amrnb --enable-
 libopencore-amrwb --enable-avfilter --enable-nonfree --enable-libmp3lame
 --enable-gpl --enable-libfaac --enable-libx264 --enable-pthreads
 --disable-stripping --enable-libass --extra-cflags=-I/usr/local/include
 --disable-debug
   libavutil      52. 22.101 / 52. 22.101
   libavcodec     55.  2.100 / 55.  2.100
   libavformat    55.  0.100 / 55.  0.100
   libavdevice    55.  0.100 / 55.  0.100
   libavfilter     3. 48.105 /  3. 48.105
   libswscale      2.  2.100 /  2.  2.100
   libswresample   0. 17.102 /  0. 17.102
   libpostproc    52.  2.100 / 52.  2.100
 [video4linux2,v4l2 @ 0x93e14a0] Raw       :   uyvy422 : 16 bpp YUY2,
 4:2:2, packed :
 /dev/video0: Immediate exit requested

  best regards.

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2410#comment:5>
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