he first available sound track.
It so happens that I have such a .vob file on-disk, so let's see what ffmpeg thinks of it:
<code>
$ ffmpeg -i mr.vob
F... 25.00 (25/1)
Input #0, mpeg, from 'mr.vob':
Duration: 00:03:16.2, start: 620.890956, bitrate: 7704 kb/s
Stream #0.0[0x1e0]: Video: mpeg2vid... m" is the number of the stream within this file that we want to use, also zero-based. "-map 0:3" therefore means that we want to use the fourth stream in the first (an... -aspect 16:9 newmovie.mpg
</code>
Or, if you'd rather use MP2 audio and a lower audio bit rate:
<code>
$ ffmpeg -i oldmovie.vob -i altered_aud