Things You'll Need
Instructions
Download a free PSP video converter, such as PSPVideo 9, PSP Video Express or WIN X Free PSP Converter (see Resources).
Convert the video you want to watch on your PSP using one of these programs. Select "MP4" as the output format and any bit rate less than 768 kbps.
Connect your PSP to your PC using the mini USB cable. Switch on your PSP, scroll to the left on the menu and select "USB Connection." Click "Open Folder to View Files" when the "Autorun" menu appears.
Create a video folder on your PSP if one doesn't already exist. Right-click anywhere on the PSP memory stick root folder and select "New," then "Folder," and type "Video."
Press the "Ctrl" and "C" buttons on your computer to copy the video file on your PC. Press "Ctrl" and "V" to paste the file in the "Video" folder on the root of your PSP memory stick.
Disconnect the USB cable and scroll to the "Video" menu on the PSP main menu. Press "X" to open the "Video" menu and display a list of all videos that were downloaded to the PSP. Press "X" on any of the videos to play them.