Things You'll Need
Instructions
Connect the PSP to your computer using the USB sync cable. Turn the PSP on. From the XMB Navigation Bar, scroll to the left to access the Settings menu. Select "USB Mode." Your computer will detect the PSP.
Click the "Start" icon in the Windows taskbar. Select "My Computer." Double click "PSP/Removable Disk." Since there is no memory stick, the root storage directory (where all of the saved data is stored) of the PSP will open.
Drag and drop the compatible video files into the root storage directory.