[HELP] Audio not-in-sync after processing

[Selur]

Mov to mkv conversion was made by the Lossless Cut program which from my knowledge does not re-encode streams but only repackages them.

If you cut on non-key frames reencoding is done, but only for the affected gops.

I used Lossless Cut to merge all the individual scenes to a single file to process with a single job.

afaik. LosslessCut uses ffmpeg, so the source might be vfr. (MediaInfo only analyses the first xy timecode to decide whether a source is vfr or not, so on merged content you can not reply on it.

The merged file was in .mkv container which did not exhibit sync problems.

okay.

Correct me if I am wrong or there is some way to feed 100 mov files into Hybrid so it would output a single file.

No there is not.

Interestingly enough DV codec is not acceptable in .mkv container according to Hybrid but Lossless Cut did it without batting an eye...

Yes, Hybrid does not support dv in mkv since mkvmerge does not.

I could try merging into .mov container

That will probably have the same issue, but you can try.

Nope, it wen't out of sync

Okay, then it's not a general extracting and muxing problem and the source is probably cfr, since Hybrid will ignore time codes if the source isn't detected as vfr or it's told to extract them.

Input file frame count: 88758
Vapoursynth Preview frame count: 177516
Output file with audio sync problem frame count: 177335 (roughly 4 seconds missing which is ~out-of-sync value at the end of the video I experience)

So, the sync issue is just at the end, starting at a specific point, or do you just notice a sync problem at the end?

I couldn't find the place to change the decoder, could you point me to it?

The settings under Filtering->Vapoursynth->Misc->Source, determine the source filter.
You can check the Vapoursynth Script View to see which source filter / decoder is used.

I'll try to prepare a sample but it may take a while since I have time only at evenings/nights to do stuff on the computer.

Ho hurry, from me, but make sure that the sample allows to reproduce the problem.

Cu Selur