DV AVIs w/ drop'd frames -> DivX; prevent audio drift?

[Fatgas]

Short version: What must I do to successfully compress a DV AVI with dropped frames? ("successfully" = audio in sync)

Long version:...

I've noticed that AVIs with dropped frames (captured by my Canopus ADVC-1000 and DVIO) play just fine. I'm dropping approx. 100 frames per hour (a frame or two, here and there), simply because my CPU and/or HD is slow/busy. When I playback the captured AVI, it's "fine": no noticeable jitters and no audio sync problems.

But when I compress that file with Dr. Divx, the audio gets more and more out of sync. The more frames I dropped on capture, the worse it gets. It's like Dr. Divx doesn't recognize that video frames have been dropped and just lets the audio get ahead of the video. (DV AVIs without dropped frames work fine in Dr. Divx.)

Question #1: Is there a program that retwiddles and reorders the frames and audio interleave of the DV AVI (with dropped frames) so that the audio and video are interleaved "perfectly", IE, in such a way that Dr. Divx doesn't create a audio-non-sync'd copy?

Question #2: Is there a setting in VirtualDub (what I use to remove commercials, etc) that will do this "fixing" for me? (Note that my current edit-and-saving in VirtualDub creates a file that plays fine, but gets out of sync when run thru Dr. Divx or even compressed directly from VirtualDub, even when using "Full processing".)

[DJRumpy]

Make sure your file isn't corrupt to begin with. VDub will scan it for common errors. I would think the problem lies with DrDivx since you are able to save a new AVI in virtualdub without any sync issues. Once you've done that, any errors have been exposed, and removed (the new avi shouldn't exhibit this problem). You've also tried creating the DivX directly in VirtualDub with the same result?

You should try AVISynth to frameserve the file. This can often help you work around problems with a source file. It can also remove any commercials from your output 'on the fly', removing the need to edit/resave your avi. Just use the TRIM command to keep only the segments of video you want to keep.

www.avisynth.org