Pokud umis anglicky tak tady to mas :
Connect your Sony PSP to your computer.
Once the Memory Stick shows up on your computer, create a new folder in the root directory of the Memory Stick, called MP_ROOT.
Inside the MP_ROOT folder, create another folder called 101MNV01 or 100MNV01. Whichever name you go with, this folder is where all of your MPEG-4 videos must go.
Transfer/Put/Upload/Copy some videos into either /MP_ROOT/100MNV01/ or /MP_ROOT/ 101MNV01/.
Disconnect your Sony PSP from your computer.