Actually, he's right, a long while ago I rendered a sequence of my Midgar scene out to an avi and it worked very nicely. It took some time to get the timings perfect but eventually even the little guys on the station lined up perfectly superimposed over my version. It was compressed, too - though DivX doesn't work, there was one I tried that did - however it still had the 'look' of an FF7 movie file, given it was 320w and of lower colour depth, like the existing FF7 ones.