synch problems

[vonzippa]

I have a Divx movie that I'm trying to convert to DVD. I used VirtualDub to save the audio stream as a .wav file, direct stream copy with no processing. It's a 1536kbps, 2ch stereo, 48kHz, 16-bit PCM. I did a "bad frame check" and it came back with 0 bad frames and 0 frames good but un-decodable. I also ran it through VDub-mp3 and did the "check for freeze frame" and it came back with nothing bad as well, even though when you play the Divx file there are a couple places in the movie where several consecutive frames become tinted with a green color and the screen looks a little garbled. Anyways, I ran the video through VirtualDub as a frame server into TMPGEnc to do the MPEG-2 conversion. Then I used TMPGEnc DVD Author to create the .vob files and whatnot, but when I play the .vob file with PowerDVD the audio becomes desynched from the video. The first 15 minutes or so of the movie is fine, but right after the first occurrence of the green tinted garbled area of the video is when it becomes desynched. This desynch lasts for the remainder of the movie, even if I manually seek to a later scene or go to a later chapter the desynch is still there. The original source Divx is 23.976 fps progressive, and I have not done any frame rate conversion along the way. The only thing I've done was enabled the 'perform 3:2 pull down on playback' flag in TMPGEnc. It's definitely not a frame rate issue, since the audio is fine until the point in the movie at which the video turns green and garbled. Is there anything that can be done to solve this issue, short of just completely removing all frames that have the green in them? I don't want to do that because some of those portions are 15 seconds or so long and removing them would leave out integral portions of the movie.

[ZippyP.]

Is there anything that can be done to solve this issue, short of just completely removing all frames that have the green in them?

I'm afraid not. If you know where they are then use Vdub and edit them out.

[vonzippa]

Am I going to have to go back to the source Divx to do that? I opened the .m2v file in VirtualDubMod and masked out the corrupted frames, but it's not letting me just save that with direct stream copy, so am I going to have to encode the entire movie over again? If so, that's really a disappointing prospect since it took about 12 hours to encode this .m2v file from the original Divx .avi

[ZippyP.]

You can try and fix the mpeg but it's probably best to go back to the source. Here's what I'd do to fix he mpeg:
-Cut the movie into parts, the part in sync and the part not.
-Demultiplex the clip of the part not in sync., you get an MP2 (audio) and an M2V (video).
-Using a sound editor fix the audio delay in the MP2, Goldwave will do that but it converts the file to wav, I don't know if any progs work with MP2.
-Convert the wav back to MP2 if necessary, multiplex the audio and video back together and test.

Or go back to the source, cut out the bad frames and encode overnight.