Jittery Video

[KABUKISTAR]

I'm trying to play a video in BSPlayer, and it does not play normally. It picks 2 frames, and then just repeatedly flips back and forth between them, and does this until the scene changes, at which point it picks 2 new frames and does the same thing.
It's the latest version of BSPlayer I'm using, and the file will play in Windows Media Player. According to G-spot, the video is XviD, and it's being rendered with FFDshow filter (the latest version).

Any ideas.

[adicoto]

Can you tell us about the audio filter too ?