[FFmpeg-trac] #4880(avdevice:open): failure to record from webcam

[FFmpeg]

#4880: failure to record from webcam
-------------------------------------+-------------------------------------
             Reporter:  lr25374      |                    Owner:
                 Type:  defect       |  thilo.borgmann
             Priority:  normal       |                   Status:  open
              Version:  git-master   |                Component:  avdevice
             Keywords:               |               Resolution:
  avfoundation                       |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------

Comment (by lr25374):

 {{{
 % ffmpeg -f avfoundation -video_size 1184x656 -framerate 10 -i "1" -y
 out.mpg
 ffmpeg version N-42510-gaa6c43f Copyright (c) 2000-2015 the FFmpeg
 developers
   built with Apple LLVM version 6.1.0 (clang-602.0.53) (based on LLVM
 3.6.0svn)
   configuration: --prefix=/usr/local/Cellar/ffmpeg/HEAD --enable-shared
 --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables
 --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-
 opencl --enable-libx264 --enable-libmp3lame --enable-libvo-aacenc
 --enable-libxvid --enable-vda
   libavutil      55.  2.100 / 55.  2.100
   libavcodec     57.  3.100 / 57.  3.100
   libavformat    57.  2.100 / 57.  2.100
   libavdevice    57.  0.100 / 57.  0.100
   libavfilter     6.  8.100 /  6.  8.100
   libavresample   3.  0.  0 /  3.  0.  0
   libswscale      4.  0.100 /  4.  0.100
   libswresample   2.  0.100 /  2.  0.100
   libpostproc    54.  0.100 / 54.  0.100
 [avfoundation @ 0x7fc723000000] Selected pixel format (yuv420p) is not
 supported by the input device.
 [avfoundation @ 0x7fc723000000] Supported pixel formats:
 [avfoundation @ 0x7fc723000000]   uyvy422
 [avfoundation @ 0x7fc723000000]   yuyv422
 [avfoundation @ 0x7fc723000000]   nv12
 [avfoundation @ 0x7fc723000000]   0rgb
 [avfoundation @ 0x7fc723000000]   bgr0
 [avfoundation @ 0x7fc723000000] Overriding selected pixel format to use
 uyvy422 instead.
 Input #0, avfoundation, from '1':
   Duration: N/A, start: 27542.969567, bitrate: N/A
     Stream #0:0: Video: rawvideo (UYVY / 0x59565955), uyvy422, 1184x656,
 10 fps, 10 tbr, 1000k tbn, 1000k tbc
 [mpeg1video @ 0x7fc72282dc00] MPEG1/2 does not support 10/1 fps
 Output #0, mpeg, to 'out.mpg':
     Stream #0:0: Video: mpeg1video, none, q=2-31, 128 kb/s, 10 fps
     Metadata:
       encoder         : Lavc57.3.100 mpeg1video
 Stream mapping:
   Stream #0:0 -> #0:0 (rawvideo (native) -> mpeg1video (native))
 Error while opening encoder for output stream #0:0 - maybe incorrect
 parameters such as bit_rate, rate, width or height
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/4880#comment:6>
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