Convert .mov to .avi

http://office.microsoft.com/en-us/powerpoint-help/add-a-quicktime-video-mov-mp4- to-my-presentation-HA010338306.aspx

No need to convert to such an ancient, and dead, file container,

If you do need to convert MOV or M4V to AVI, you can try this program: video converter-a powerful mov to avi converter ,which can help you finish the MOV to AVI conversion, it can help you convert all other videos to powerpoing compatible video formats such as avi, wmv, mp4, etc,.

For free one: handbrake is a good choice. If you don't wanna install any programs, try web-based zamzar.com which needs input your email adress. For Mac users, enolsoft video converter is the best one which converts with high fidelity.