I am creating an SVCD slideshow with background music using Nero Vision Express 2. The project is about 4:40 long, with 37 images. Every once in a while, video noise appears in the resulting video (a small 10x10 block, or so, suddenly shows totally scrambled colors for a fraction of a second). Sometimes, this is during the transition from one image to another, but sometimes not. What's going on here?