There is no limit in QuickTime to the size or frame rate you can have for a movie -- the only limitation is hardware. On existing Macintosh computers, and using Apple's Video Compressor, you can run 160 x 120 pixel movies at an average of 15 frames per second. The new Macintosh Display Card 8*24 GC can provide larger video windows by decompressing the video from its AMD2900 RISC processor.