or you can use DivX Converter, but the code is little tricky. I work for DivX, and there is something called Web Player where other person can download it and watch it on your site, otherwise you can put a link to your video and tell them they need to download free DivX bundle from DivX website and open the video with DivX Player.
I can send you the code if you like. if you want to go to my site and look to see if you like it.
DILEK, AUTHENTIC TURKISH BELLY DANCER from Istanbul and San Diego
I would use like HubicRuzz recommended Movie Maker program by Apple.