its really weird...i've tried it in itunes and quicktime w/ no other apps open, but i still get video that putters along. This is on a iBook 900mhz (max ram).
both. however i did have better luck last night playing natively in itunes (after a few minutes into the show) rather than quicktime, go figure. yeah, measly g3 here. I was impressed with the quality of video for a 220 mb file (aside from the hiccups).