ffmpeg -version
ffmpeg version N-36000-g154c0a8, Copyright (c) 2000-2011 the FFmpeg developers
  built on Dec 20 2011 13:49:03 with gcc 4.4.3
  configuration:
  libavutil    51. 32. 0 / 51. 32. 0
  libavcodec   53. 46. 1 / 53. 46. 1
  libavformat  53. 27. 0 / 53. 27. 0
  libavdevice  53.  4. 0 / 53.  4. 0
  libavfilter   2. 53. 0 /  2. 53. 0
  libswscale    2.  1. 0 /  2.  1. 0
ffmpeg N-36000-g154c0a8
libavutil    51. 32. 0 / 51. 32. 0
libavcodec   53. 46. 1 / 53. 46. 1
libavformat  53. 27. 0 / 53. 27. 0
libavdevice  53.  4. 0 / 53.  4. 0
libavfilter   2. 53. 0 /  2. 53. 0
libswscale    2.  1. 0 /  2.  1. 0