Some XviDs play choppy on standalone DVD player, but absolutely fine on PC

[udaykhan]

Hi there,

I have, among all other DivXs / XviDs, this one movie of two parts, which I burned on a DVD as a normal data disc. My PC plays it perfectly fine but my standalone DVD player won't. It's way too choppy and skips a lot of frames (read - LOT OF FRAMES) and the whole movie is over in a few seconds! Same with the second part of the movie.

My DVD player is an LG (don't remember the model), fairly new (6 months old) and plays other DivX / XviD without any complaints. So it's got to be something with these files. Any suggestions please?

PS: I don't have the source DVD to be able to rip it following any instructions. I downloaded the movie from the internet. And I am aware of the fact that the more the number of conversions, the more is the quality loss in the video. So, I don't want to re-encode it or something like that.

[udaykhan]

Some more research:

The only difference I found is that the audio is VBR as against others' CBR. Doesn't my DVD player like VBR? Or do standalone DVD players not like VBR in general? If so, can I, without touching the video, extract the audio part only and convert it into CBR and mux it back to the video? Again, I don't at all want do a video conversion, simply because I'd lose out on quality...

[udaykhan]

I just discovered that I have more XviDs with VBR on DVDs that are playing fine on the DVD player. So it's not just because it had VBR MP3 audio? It must be something else?? I must say I am not a newbie to all this stuff but not an expert either.

BTW I just found out a way to demux the MP3 from the AVI, convert to CBR and again mux it with the video using Direct Stream Copy option in VirtualDubMod, so my video quality is safe. But I am not going to burn another copy unless I am damn sure it plays. I'll have to wait till I buy a DVD RW and test it first. I don't have one right now.

I'd like to hear from the experts here on whats going on anyway....

[jagabo]

Many things can cause choppy playback: GMC, QPEL, packed bitstream, high bitrates, bad multiplexing, etc. GSpot will report most of these. Use MPEG4Modifier to remove packed bitstream if that's the problem.

[Megahurts]

If the audio is not interleaved with the video it will play fine on a computer but not on a dvd player. An explanation is in the VDub help file under audio interleaving.

If this is the case, load one of your bad xvids in VirtualDub and select Direct stream copy for both video and audio. VDub defaults to a/v interleaving and will save an interleaved file.

[udaykhan]

Hi,

Thanks all for the suggestions...been busy for some time.

I tried what Megahurts suggested, but it did not help. Finally, I just did a whole reencoding of the same file without any muxing / demuxing, and it is now fixed.