zetheroo

zeth@zeth-ThinkPad-R61:~$ ffmpeg -f video4linux2 -i /dev/video0 -f alsa -i front:CARD=U0x46d0x809,DEV=0 -vcodec libx264 -crf 20 -acodec libmp3lame -ar 44100 -ab 128k output.mp4
ffmpeg version N-34960-ga7e5679, Copyright (c) 2000-2011 the FFmpeg developers
  built on Nov 18 2011 23:38:16 with gcc 4.6.1
  configuration: --enable-shared --enable-static --enable-libx264 --enable-libmp3lame --enable-gpl
  libavutil    51. 26. 0 / 51. 26. 0
  libavcodec   53. 35. 0 / 53. 35. 0
  libavformat  53. 20. 0 / 53. 20. 0
  libavdevice  53.  4. 0 / 53.  4. 0
  libavfilter   2. 48. 1 /  2. 48. 1
  libswscale    2.  1. 0 /  2.  1. 0
  libpostproc  51.  2. 0 / 51.  2. 0
[video4linux2,v4l2 @ 0xb6b780] Estimating duration from bitrate, this may be inaccurate
Input #0, video4linux2,v4l2, from '/dev/video0':
  Duration: N/A, start: 19835.931004, bitrate: 122880 kb/s
    Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 640x400, 122880 kb/s, 30 tbr, 1000k tbn, 30 tbc
Unknown input format: 'alsa'