"Bit Error" when playing AVIs on set top box - video freezes

[MLS]

I use VirtualDub to append videos that I've downloaded as separate files and also to fix out of sync audio. When I save the AVIs on my USB and play them on my set top box, they occasionally freeze (like a scratched DVD) and then continue playing. When the videos finish, a message appears saying "Bit Error".

Can someone please tell me why this is happening and what I can do to stop the videos from freezing? The total size of the files, if it's relevant, is usually around 2.5 gig.

Any advice would be much appreciated.

[Baldrick]

You could try divfixpp on the avi. If it wont help maybe reconvert with avirecomp.