[Matroska-devel] Re: Different audio track inside a file

Steve Lhomme steve.lhomme at free.fr
Thu Mar 16 12:22:03 CET 2006


Francesco Tusa wrote:
> Hi. I'd like to mux:
> 1) Video track 23.976 fps
> 2) Audio DTS same length of video
> 3) AC3 track shorter than video (25 fps)
> How can I get the audio synchronized with video in both cases?
> I've also tried to stretch the track 3) by a factor 25/23.976.
> I've tried to use external timestamps for the track 3) (getting them 
> from the 2)).
> Any idea is well come.

There is something called Track Timecode Scale that allows you to mux a 
file that can play video according to the timecode of other tracks. 
Unfortunately I'm not really sure any player can support that for the 

mkvmerge can probably create such a file. Then you'll have to try 
Haali's Media Splitter, MPC's internal splitter and VLC to see if any of 
them can do that.


More information about the Matroska-devel mailing list