Avi-conversion - sound delay

[Mållgan]

I have converted an avi-file with VSO DivXtoDVD and created a VIDEO_TS-file, which I have burned with Nero. However, when I play the DVD, the sound is coming a second after the picture. What can be the problem?

[Mållgan]

P.S. The avi-file i a divx-file.
D.S.

[mats.hogberg]

What can be the problem?

That VSO didn't get that the audio was interleaved with offset in the AVI.

/Mats

[Mållgan]

And can it be "repaired"?

[mats.hogberg]

Try some other tool/method for your AVI to DVD conversion. There are many.

/Mats

[Mållgan]

I have tried some other methods but the result is the same (TMPG Enc, DVD Santa, Dr Div X, X Video Converter, Main Conceptor MPEG Encoder). Some programs don´t even find any videostream!

[mats.hogberg]

OK. Find out how much off the audio is.
Demux the audio out of the AVI and convert to wav.
Add some silence (if the audio is ahead of video) or cut a little (if the audio is after the video) using some audio editor (Goldwave) to compensate for the sync prob.
Use AVI as video source, fixed wav as audio source when encoding to DVD specs mpg.

/Mats

[Mållgan]

Thank you. I´ll try but the strange thing is that the sound delay starts after 9-10 minutes, that is, there is no audio delay during the first 9 minutes.

[mats.hogberg]

Ah - that's a different beast! There are bad/undecodable frames in the AVI. Even if it plays fine (AVI players can handle this), the encoder skips a # of frames (the encoder needs each and every frame to work properly) but doesn't make the same skip in the audio.
If it's just a few frames, these can be deleted with VirtualDub MP3 Freeze. There's a guide on how to do it somewhere around here. Personaly, I've never succeeded 100% - If I get an AVI with bad frames, I just delete it. There are so many more rewarding things to do in life than fixing bad AVI files!

/Mats

[Mållgan]

Thank you Hogberg. I think I will drop this project now!

[Mållgan]

Before closing this project I played the avi-file (divx) in DivX Player and then there is no audio delay! Thus, the audio delay occurs when I convert the avifil to vobfiles and burn those vobfiles (VIDEO_TS-file) into a DVD. Does this change the possibility of solving the problem?

[mats.hogberg]

No. Like I said, a player can handle an unreadable frame here and there gracefully. An encoder can't. When taking their first steps in this business, most take the fact that you can play an AVI from start to end without experiencing any problems as proof of the AVI being error free. Not so. Try scan the AVI for errors using VirtualDub MP3 Freeze. Get the latest version of the DivX codec (if DivX is what it is - use GSpot to make sure).

/Mats

[Mållgan]

One should never give up, it seems. I ran the avi-file throuth VideoFixer. Then I converted the VideoFixer-output-file to a mpeg2-file with TPMG Enc. The created mpeg2-file became inputfile in VSO DivXtoDVD, where VIDEO_TS-files (vob etc) was produced. I burned those files with Nero and tha audio delay was almost gone! At least, I can live with the result.