How to put videos on a psp?

I've had my psp for quite a while and
I want to know how to put videos on it
I've tried but every time I do it never
Shows up on my psp.does anyone
Know how to put videos or movies
On a psp?if so cudd you tell me?

first thing I remember doing was formatting my psp memory card which DELETES ALL YOUR DATA.

Then I downloaded videos and I forgot I think it was in .mp4 format and you add it to the video section.

You can read more on google and stuff though im not 100% sure.

You need to buy a USB cable which connects to a PSP.

Then you need to download a PSP video converter off the internet. (PSPvideo9)
This will convert any video file to the MP4 which is needed on the PSP.

There after converting the video there should be an option 'upload to PSP'

Before you do this you must go through the options on your psp and set it to 'USB mode'