How Do you change the format of a video?

I want to put some vids on my pspHow Do you change the format of a video?
For PSP, I think you convert them to MP4

You can do that with this video converter:

http://www.any-video-converter.com/any-vHow Do you change the format of a video?
Use this clonedvd mobile....it's a great program for that...download the free 21 day trial here



http://www.slysoft.com/en/clonedvd-mobil