Most of we also use psp converter to convert a video to psp.. psp support mpeg4 and avc(2.0+)

I know that avc support for 480x272, 720x480(those restriction resolution playback mpeg4 on psp)

Converter i use..

1. PSP video 9 - able to convert avc codec video but no playable on psp
2. Super - able to convert but same result
3. PSP movie creator - able to convert to avc codec and play-able on psp, but the program not support for 480x272 resolution..

Anyone know why the other converter not work? i even try 320x240 resolution on avc codec( 1 and 2 converter)