mp4 for Quicktime is probably the easiest to get right.
avi can use several different codecs and wmv is native windows.
( hoifbjifbef, Tue 9 Jun 2009, 17:32, archived)

chars

( moohalaa, Tue 9 Jun 2009, 17:36, archived)

mp4 also my favourite for quality, btw

( hoifbjifbef, Tue 9 Jun 2009, 17:38, archived)