Hi!

I have quite long DVB-S recording. It is one file with about 8 GB. It conainas a sequence of shows and I have a problem with audio and video getting more and more out of sync the further into the file I get.

I have tried all common techniques usually applied to DVB-S streams, e.g. demux and mux again and ran it through the well known tools that usually fix audio sync problem, but the problem still remains.

My idea would be now if it might make sense to cut out the piece I am interested in in the first place (it is somewhere in the middle of the file) and then try to sync that piece.

I found the option -S in tcdemux, which sounds as if it could do something like that. I just did not find any example of how to use it. Does anyone have a hint?

I understand that is has something to do with DTS / PTS time stamps. Is there a good method to analyse these time stamps? I understand in DVB-S each show starts at 0:00 ?

It might be helpful for me if I could just see the sequence of DTS / PTS to check if it is ongoing throughout the file or if it gets reset. But I habe no idea what tool might be helpful with that.

Regards,
Torsten

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