brandon@brandon-laptop:~$ ffmpeg -f v4l2 -s 960x720 -r 15 -vcodec h264 -i /dev/video0 -f flv  rtmp://server/live/livestream
ffmpeg version N-42939-g236ecc3 Copyright (c) 2000-2012 the FFmpeg developers
  built on Jul 27 2012 00:02:56 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
  configuration: --enable-librtmp
  libavutil      51. 65.100 / 51. 65.100
  libavcodec     54. 45.100 / 54. 45.100
  libavformat    54. 21.100 / 54. 21.100
  libavdevice    54.  2.100 / 54.  2.100
  libavfilter     3.  3.100 /  3.  3.100
  libswscale      2.  1.100 /  2.  1.100
  libswresample   0. 15.100 /  0. 15.100
[video4linux2,v4l2 @ 0xa113720] Cannot find a proper format for codec_id 28, pix_fmt -1.
/dev/video0: Input/output error