AVI to DVD audio/video question

[Iconoclast_211]

I looked for the answer in the Newbie audio sync sticky and didn't find what I was looking for so here is my problem:

I have an AVI file that plays fine in VLC with no audio/video sync issues, however when I converted the AVI to DVD using AVI2DVD the resulting audio/video was out of sync. So I opened the AVI in Media-Info and under the audio tree it says Video delay: 500ms. Next I opened the AVI in AVI-Mux and corrected the 500ms delay to 0ms but the resulting AVI file was out of sync. What I want to know is how can I convert the AVI to DVD and still keep the 500ms video delay so that the DVD will be in sync, or how to make an Avi with no delay that is in sync. If a similar issue has been addressed somewhere else then please point me in the right direction.

Cheers.

[manono]

Next I opened the AVI in AVI-Mux and corrected the 500ms delay to 0ms but the resulting AVI file was out of sync.

What did you expect? If a half second delay keeps it in synch, removing it will put it half a second out of synch. You want to apply that same delay to the DVD audio. One way to do that is to feed that out of synch AVI into AVI2DVD. That should then give you an in synch DVD. I think (since I don't use that program).

If the audio in the AVI is already AC3 audio, you can demux it and remove the delay with Delay Cut, before then remuxing it to feed into AVI2DVD. If it's MP3 audio, something like HeadAC3he can remove the delay.

[dadrab]

Since the original AVI was in synch, I'd suspect a variable bitrate MP3 as your audio source.

Take a look at it with Gspot and see what you find.

If that is indeed the case, demux the whole file, use one of the options above to make the audio constant bitrate AC3 and feed that into your authoring program for remuxing.

I personally use Adobe Audition to complete that task and save the audio out to 48000 wav. Then I let DVDLabPro transcode the audio during the authoring phase. Those are both "for pay" proggies, though and you might want a free solution. I'm not real familiar with some of those since I don't need them. A little experimentation will go a long way, but you get the jist of the workflow, right?

[Iconoclast_211]

Thanks for suggesting DelayCut, it worked since the audio was AC3. Thanks again for all your help.

Cheers.