C:\Program Files\Red Kawa\Video Converter\Tools\FFmpeg>ffmpeg.exe -i audio.ac3 -
i video not_heroes.mp4
FFmpeg version SVN-r9133, Copyright (c) 2000-2007 Fabrice Bellard, et al.
  configuration: --enable-gpl --enable-pp --enable-swscaler --enable-pthreads --
enable-liba52 --enable-avisynth --enable-libamr-nb --enable-libamr-wb --enable-l
ibfaac --enable-libfaad --enable-libgsm --enable-libmp3lame --enable-libnut --en
able-libogg --enable-libtheora --enable-libvorbis --enable-x264 --enable-xvid --
cpu=i686 --enable-memalign-hack --extra-ldflags=-static --enable-dirac
  libavutil version: 49.4.0
  libavcodec version: 51.40.4
  libavformat version: 51.12.1
  built on May 27 2007 19:45:44, gcc: 4.2.0
Input #0, ac3, from 'audio.ac3':
  Duration: 00:51:54.4, start: 0.000000, bitrate: 384 kb/s
  Stream #0.0: Audio: ac3, 48000 Hz, 5:1, 384 kb/s
[mp3 @ 00ACBEA0]Could not find codec parameters (Audio: mp3, 64 kb/s)
video: could not find codec parameters