Now that I'm thinking of it, there may be one way to do it. Render the BG image once, load it into Bryce, move the time slider to the next frame and plop render the one small part that actually moves. Do that for each frame of the sequence. Save each image out in numbered order, and then put it all together in a video editor frame by frame. Mind you, I haven't actually tried it, but it sounds like it will work. ;-) If it does, let me know! And if you need a better explanation, IM me. HTH, Mike