I'm having a small problem with my Support Plus PMP (also know as Sorell SV-10). Whenever I play an avi file on the tv through the PMP I get some odd little quirks. Like the picture will look kinda choppy (sluggish) or the colors will randomly change in brightness. Also on some files the picture will roll and jump around in parts, like im watching a bad vcr tape. Im not sure if its a problem with the PMP itself or if I need to use avi's encoded a certain way.

Any ideas?