Flickering black - why does it happen?

[eli2k]

I'm not sure what's going on here. On two computers I have DivX 5.02 loaded. When I play a certain DivX on one computer, all I get is the audio and a flickering black video (you can notice the flickering somewhat). I disabled ffdshow and when I turned it back on so it uses the 'libavcodec', the video will display. All these other DivX encoded video files I have played I made use the DivX codec and not ffdshow and they played fine. And the other computer appears to play this same video file fine, too.

I'll just turn on ffdshow for now, but if anyone knows what might be causing this problem, I'd like to know about it.

Thanks.