Audio goes out of sync on second DVD

[nettroller]

I'm not sure where I went wrong - but I'm willing to redo the burn to fix it.
I took an 1.2gig avi and split into two files using virtualdub. Then I treated each 1/2 as a separate movie. I removed audio from both halves using Virtualdubmod as a .wav then, using ffmpeggui, I converted them to AC3. The video halves I encoded using TMPGenc (CBR). Then I remuxed using TDA.
Now, when playing, the first disk is fine..but the second..about 1/2 way thru the audio goes out of sync.
Any suggestions on how to redo? Maybe it was the source? But the above steps are how I do my other avi's ..and they turn out fine...
Thanks for any comments...

[winifreid]

Try muxing with TMPGenc. Use a different ac3 encodeer like besweet. Does it get progressivily get further out of sync, or just at one place for a certain amount.

[nettroller]

Not sure what you're suggesting here

Try muxing with TMPGenc

I've never used Besweet before - is it better than ffmpeggui?
As for your last question - I would say it must go out of sync at some point, since all of a sudden, during a closeup you notice it and then it stays that way. After saying that, I'm wondering if there was a 'burp' during wav to ac3 - or at some point in the audio convertion ......do programs burp...?

[winifreid]

Besweet isn't better, it just may encode differently and not produce the same error. If the sync is not progressive, you can easly fix it. But I am not sure what program to use for ac3.

[Baldrick]

probably some problems when you splitted the avi. if it is mp3 vbr audio and you use audio->direct stream copy you will get problems.

[nettroller]

Yes..it was mp3 audio. Whenever I use virtualdub I always set to 'direct stream copy'.
To avoid this happening in the future - can you point me to a guide where I can read up on how I should have done it?

Thanks...