I agree -- Cinepak is the best codec for .AVIs. But I get my best animations by rendering in sequential .BMPs. I rename them to .DIBs and pull them into Videdit (freeware) to make the .AVI, then output it using no compression. This makes a crystal clear .AVI. I haven't compared filesizes for that approach vs. straight rendering to an .AVI, but I suspect it's quite a bit larger. - Jim