Things You'll Need
Instructions
Connect the PSP to your computer using the USB cable. Turn the PSP on.
Go to the "Home" menu on the PSP. Scroll down until you see "USB Mode." Set the USB Mode to active. This will open a window on your computer displaying the media contents on your PSP.
Click the "Videos" folder.
Place the MP4 videos you want on your PSP into the "Videos" folder.
Disconnect the USB cable from the PSP by pressing the "Circle" button.
Go to the "Home" menu. Scroll down and find the "Videos" section. Here, you will be able to watch all the videos that have been placed inside the "Videos" folder.