Standalone Divx player out of sync

[Tool Man]

I bought a cheap Divx player from eBay, it's a small portable DVD player type, with an SD card slot and a USB port.
Anyway, certain Divx files seem to loose audio sync after a few minutes.
What I've noticed is that the files that go out, are encoded at 24 fps. When I do my own encoding, I use 25, and they play fine. I've also downloaded a few NTSC test files at 29.97 and they also play fine.
The player has menu options for NTSC, PAL and PAL60. I've tried them all, it's make no difference.

Has anyone encountered this, or know what may be causing it? Maybe the player just can't handle 24 fps?

Thanks.

[jagabo]

VBR MP3?

[Tool Man]

VBR MP3?

I just checked with GSpot, and it's says audio is MP3 CBR.

Also I'm not sure if the frame rate is the cause anymore. I downloaded a few episodes of TV shows I missed, and they're done at 24, well 23.976, and it's playing fine! No audio sync issues. Now I am confused.

[jagabo]

Maybe it's having problems with packed bitream in the divx data? Try using Mpeg4Modifier to remux without packed bitstream, or vice versa. Also does Gspot show multiple b frames in the problematic files vs single (or no) b frames in the ones that play ok?

[Tool Man]

I've just tried packed and unpacked bitstreams, made no difference, although in doing so, I did notice that the problem files seems to be using a different codec.

The files that play OK use XviD, and the problem ones use DX50. Could that be the cause?

[jagabo]

The files that play OK use XviD, and the problem ones use DX50. Could that be the cause?

That wouldn't necessarily make any difference, the two should be pretty compatible. You can check to see if it some peculiarity of your player by changing the fourcc code from DX50 to Xvid. Try AVI Fourcc Code Changer. It's also possible the files were encoded with some internal Divx setting that your player doesn't like. But there's nothing you can do about that except reencode avoiding that setting.