mp4

The PSP system supports the following video and movie file formats: MemoryStick™ Video Format MPEG-4 Simple Profile (AAC) H.264/MPEG-4 AVC Main Profile (CABC)(AAC) and Baseline Profile (AAC) MP4 MPEG-4 Simple Profile (AAC) H.264/MPEG-4 AVC Main Profile (CABC)(AAC) and Baseline Profile (AAC) AVI Motion JPEG (Linear PCM) Motion JPEG (u-Law) Some Divx Files UMD Flash Video Coming in the Future. http://www.us.playstation.com/support/psp http://playstation.custhelp.com/cgi-bin/playstation.cfg/php/enduser/std_adp.php?p_faqid=149&p_created=1161039725&p_sid=cWvB2jtj&p_accessibility=0&p_redirect=&p_lva=&p_sp=cF9zcmNoPTEmcF9zb3J0X2J5PSZwX2dyaWRzb3J0PSZwX3Jvd19jbnQ9NTAsNTAmcF9wcm9kcz0xJnBfY2F0cz0mcF9wdj0xLjEmcF9jdj0mcF9zZWFyY2hfdHlwZT1hbnN3ZXJzLnNlYXJjaF9ubCZwX3BhZ2U9MSZwX3NlYXJjaF90ZXh0PXZpZGVv&p_li=&p_topview=1 http://playstation.custhelp.com/cgi-bin/playstation.cfg/php/enduser/std_adp.php?p_faqid=333&p_created=1192738399&p_sid=cWvB2jtj&p_accessibility=0&p_redirect=&p_lva=&p_sp=cF9zcmNoPTEmcF9zb3J0X2J5PSZwX2dyaWRzb3J0PSZwX3Jvd19jbnQ9NTAsNTAmcF9wcm9kcz0xJnBfY2F0cz0mcF9wdj0xLjEmcF9jdj0mcF9zZWFyY2hfdHlwZT1hbnN3ZXJzLnNlYXJjaF9ubCZwX3BhZ2U9MSZwX3NlYXJjaF90ZXh0PXZpZGVv&p_li=&p_topview=1

Best to call tech support and verify