I have a couple of divx videos, that when I came to play them the first time, there are some very strange diagonal distortion "lines". They are clearly part of the signal repeated as they change with the picture in the background and you can sometimes make out the picture in them themselves. They are overlayed quite transparently over the real picture, but sometimes they are so pronounced as to make the image unwatchable, other times they are just annoying ghosts.
Never seen anything like it before, but it happens on 2 different divx's from different sources. Have tried a few other pre-existing, known-good videos on my media share and don't see this behaviour. No idea whether it is related to divx itself, it is quite likely that it is a coincidence that both happen to be divx. AVICodec tells me that they are both divx v5.
When I play them in Windows Media Player, they both play perfectly! Anybody seen this before? Suggestions?