And what bit of software should I use to convert videos to it on a mac? I need to provide a bunch of people with a powerpoint which contains a video, and a separate video only file. At the moment, some people on PCs are having problems (the video is an .mp4 and the file in the powerpoint is a .mov). I'm very ignorant about these things (and quality / file size not an issue, the most important thing is it being able to be played by the most number of people when they put the disc in their machine).