On Jul 12, 2005, at 1:14 PM, x4u- request at listserver.themacintoshguy.com wrote: > How the heck do you play the avi files in Quicktime which is supposed > to be such a multiple format player? AVI is not a video format, its a container format (kind of like QuickTime), so playing it depends entirely on what's inside. Asking that QT play it is kind of like demanding that a competent mechanic should be able to work on what's in your garage, just because it's in there. AVIs can contain just about anything - like weird little proprietary codecs made by people who create novelty devices, like the little pen cams. If you know where the file came from, that's usually enough info to figure out what codec you need. SR