DIVX files with drifting AUDIO SYNCH problem on standalone

[LisaB]

Maybe someone else has experienced this. I have the phillips dvp642, but I think anyone who knows a lot about AVI structure should be able to help.

I have a few AVI's that play fine on the computer, but on the standalone, the audio will slowly drift out of synch. By doing a quick fast forward or rewind for just a second, and then resuming play, the audio is brought back into synch....but after about 3-4 minutes it is noticeably out of synch again.

I have tried converting the audio (originally VBR MP3) to CBR MP2 and to CBR AC3. I interleave the audio with the video using VDubMod. Both MP2 and AC3 still give me the same result - drifting audio synch that can be brought back in synch by seeking.

I am beginning to think that there is something funky about the video stream, and that *any* audio which I combine with this video will result in the same behavior. I have scanned for bad video frames, and found none.

Does anyone have any ideas here, or could at least explain why FF/RW would restore (temporarily) audio synch? I was thinking maybe that the frequency of keyframes was not enough, but then wouldn't the audio be brought back in synch at each keyframe?

[Xtropy]

Maybe you are using VBR MP3 stream? I am not an expert in the matter but when I've had audio sync change during the video it's because of a corruption at some point in the file or it could be a variable bit rate problem. Have you tried to re-encode the audio in CBR MP3 mode?

X

[Suntan]

I agree with Xtropy, I would either convert the audio to CBR MP3 from the original source (prefered) or convert the VBR MP3 you have to WAV then convert that to CBR MP3. Then I would mux it with the video stream with aviMUX_GUI instead of Vdubmod.

-Suntan

[LisaB]

No luck yet.

Extracted the audio to WAV, converted to CBR MP3, still the same problem on the standalone only.

I had to use VDUBMod to mux, however, since aviMUX_GUI produced an avi which actually locked up my standalone!