ffmpeg/ffmpeg -i combined.mpg
FFmpeg version SVN-r8530, Copyright (c) 2000-2007 Fabrice Bellard, et al.
  configuration: --prefix=/home/qwert/ffmpeg
  libavutil version: 49.4.0
  libavcodec version: 51.40.2
  libavformat version: 51.11.0
  built on Mar 26 2007 19:29:38, gcc: 4.1.1 20060525 (Red Hat 4.1.1-1)
Input #0, mpeg, from 'combined.mpg':
  Duration: 00:39:39.0, start: 0.630611, bitrate: 794 kb/s
  Stream #0.0[0x1e0]: Video: mpeg1video, yuv420p, 360x240, 104857 kb/s, 29.97 fps(r)
  Stream #0.1[0x1c0]: Audio: mp2, 44100 Hz, stereo, 128 kb/s
Must supply at least one output file