"btw don't use 640x480 for a tv is not a 4:3 proportion " Ummmmm ... YES it is. Unless I'm misunderstanding you completely. 640 x 480 is exactly 4:3. The only thing you need to keep in mind is that TV's crop off a decent amount of the 640 x 480. There is a "TV-safe" zone you need to be aware of. There are also "TV-safe" colors. NTSC Standard: 640x480, Interlaced, 29.97fps Oh, and if this is for TV you of course need to interlace your video or it will look like crap as well. I just render out to my DV-codec for my capture board. Works like a charm. But ONLY if I know this will be for TV only, otherwise I do TIF sequences or my personal favorite compromise Indeo 5.11 with NO COMPRESSION. -Tim