[MPlayer-users] Encoding a vob file in several files, automatic splitting ?

belcampo belcampo at zonnet.nl
Sun May 18 13:28:30 CEST 2008

Steph wrote:
> Hello,
> I've a got a lot of VOB files, that I've already encoded in X264, but
> now I must split the results in small sequencies to make my film.... 
Do you have to split the x264 or the vob files ?
X264 in mp4 container can be split with mp4box
Mpeg2 in VOB can be split with ffmpeg -ss 00:00:00 -vframes 25 if its 
PAL or 30 if its NTSC and of course multiples of that. By working with 
vframes you always will be sure to end before the next key frame.
Audio has to be done separately, because there will always be + or - 
delay between audio and video.

Henk Schoneveld
> due to the number of files (8 hours of recorded video), I think it will
> take decades (small pieces, from 30 seconds to 5 minutes, all
> differents). Furthermore, sometimes, manual splitting is not a good job
> because there's some key frames lacking (using avidemux)
> So, from the DVD sources, is there a special command to encod a large
> vob file in several small pieces, without having to know the timeline ? 
> Thanks a lot !
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