We're a small non-profit and we're authoring some data DVDs with some instructional videos on them (mostly Powerpoint and video screen captures).
Some of our users may be computer novices, others may not be able to install additional software, others may be using older machines - so being able to play these videos without having to install any extras is a must.
What's the best format to export these videos for playback on Windows XP and later, and Mac OS X 10.5 and later?