You don't have a background jpeg will use the camera environment colour because it's not capable of saving rgba Dave Well if i don't have a bg, won't the video go white instead of black like space needs to be? Because the exported files had transparency and showed white when i looked at them. If they will automatically show black bg, the next renders I will do will be done in TIFF. Just got to finish this jpeg render though. It's already at frame 174. I've checked the exported image files and they look good.