ffmpeg -i 99_postamble.mp4 99_postamble.avi
FFmpeg version SVN-r0.5.1-4:0.5.1-1ubuntu1, Copyright (c) 2000-2009 Fabrice Bellard, et al.
configuration: ...
Seems stream 0 codec frame rate differs from container frame rate: 50.00 (50/1) -> 25.00 (25/1)
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '99_postamble.mp4':
Duration: 00:00:29.60, start: 0.000000, bitrate: 586 kb/s
Stream #0.0(und): Video: h264, yuv420p, 720x576, 25 tbr, 25 tbn, 50 tbc
Stream #0.1(und): Audio: mp3, 48000 Hz, stereo, s16, 96 kb/s
Output #0, avi, to '99_postamble.avi':
Stream #0.0(und): Video: mpeg4, yuv420p, 720x576, q=2-31, 200 kb/s, 90k tbn, 25 tbc
Stream #0.1(und): Audio: mp2, 48000 Hz, stereo, s16, 64 kb/s
Stream mapping:
Stream #0.0 -> #0.0
Stream #0.1 -> #0.1
Press [q] to stop encoding
frame= 739 fps=114 q=31.0 Lsize= 1640kB time=29.56 bitrate= 454.5kbits/s
video:1353kB audio:231kB global headers:0kB muxing overhead 3.551336%