I'm working on animation which containes loads of high quality pictures. When I try to make fade in/out istead of clear, gentle transition I get stripes (black&grey). This is particulary visible when the pictures are bright. I use Video for windows: editing mode, timebase is 24 frames, frame size is 640x480 and the codec: 3ivx D4 4.5.1 Video Codec, but even with no codec problem appears. Please help me! I don't want this terrible stripes ruin my work.