# ffmpeg -f v4l2 -framerate 15 -video_size 960x544 -i /dev/video0 -f flv rtmp://192.168.0.104:1935/cam1
ffmpeg version N-80695-g8fb92ea Copyright (c) 2000-2016 the FFmpeg developers
  built with gcc 4.9.2 (Raspbian 4.9.2-10)
  configuration: --arch=armel --target-os=linux --enable-gpl --enable-libx264 --enable-nonfree
  libavutil      55. 26.100 / 55. 26.100
  libavcodec     57. 48.100 / 57. 48.100
  libavformat    57. 40.101 / 57. 40.101
  libavdevice    57.  0.101 / 57.  0.101
  libavfilter     6. 46.102 /  6. 46.102
  libswscale      4.  1.100 /  4.  1.100
  libswresample   2.  1.100 /  2.  1.100
  libpostproc    54.  0.100 / 54.  0.100
Input #0, video4linux2,v4l2, from '/dev/video0':
  Duration: N/A, start: 10624.617370, bitrate: 125337 kb/s
    Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 960x544, 125337 kb/s, 15 fps, 15 tbr, 1000k tbn, 1000k tbc
rtmp://192.168.0.104:1935/cam1: Input/output error