Bill Reburn <reburn at mts.net> writes: > Is there a rule of thumb for how much space video/audio information > takes on > a HD? For some reason 1Mb/sec pops up in my mind. It depends on the format, compression rate, resolution, color depth... ;-) If you're thinking DV format (what iMovie imports), that runs at 3.6 MB per second. However, that is a fairly high data rate as far as video compression goes. A high-quality compressed movie trailer would probably be in the neighborhood of 150-350 KBps. Kynan Shook kshook at mac.com http://homepage.mac.com/kshook/index.html