just done a quick google search and found this....

Allok MPEG4 Converter free download Allok MPEG4 Converter is a powerful and handy video converter which helps you convert all popular video/movie to MPEG4 format. The MPEG4 Converter converts video files for your portable media player (MP4 player), i

but there are tons of converters out there...

converting to mpeg4 - Google Search=