PSP HELP!!

I have an issue with my PSP. Recently I downloaded "The Making of God Of War: Chains of Olympus" video from the PSP website(http://www.psp.com). Now, I was under the impression that my PSP had compatibility with mp4s…which is what format the file is in. However, when I try to view the movie in the PSP Browser, I get a message that says: "This video cannot be played. The data type is not supported.". Now, I know that the PSP is capable of playing mp4s, so I am not quite sure what to make of it. Anybody have any solutions?

There was something that you’re supposed to convert the video files or something like that. I can’t remember. I know it’s here somewhere though…