Any chance to play movies bigger than 480×272 on PSP?

Hi, I just found a thread on TV shows forum, with Simpsons show
I didnt checked them before downloading, as in post description it says that it can be played on Ipod/Iphone/PSP
And it seems they have 640×480 resolution, when PSP plays 480×272 maximum
I heard somewhere it can play bigger files on some homebrew, i can remember the name of it…
Anyone can help me?? I tried putting these vids on Favourite folder of PSPTube homebrew, they can be played, but are very, very slow and unwatchable
I am using chickHEN on PSP 2004 with ta83 motherboard, if that matters
Answer #1
http://www.pspmod.com/forums/movies-music-your-psp/37242-tut-480x272-avc-psp-video9-v2-25-a.html
Answer #2
kk..
firstly..
even if its over the dimensions/resolution the psp resizes it when converted..
and even if its already converted then just put it into ur VIDEO folder..
and view it..
it automatically resizes..
and if it doesnt, then try pressing the screen mode button on the options toolbar…
Thanks.
TheChibiGuy