How can I download video files from my PC into my PSP?

First of all make sure that the movies you want to transfer are of the Mpeg4 format.
For info on how to convert different files into the correct format follow this link : www.memorystick.com/psp

Choose the movie icon from the main menu, insert a UMD or a Memory Stick Duo, a new icon will show up. Choose the icon and press the X button. The movie should now play.

In order to download the movie into the Memory Stick Duo you have 3 options:
1. use a computer with a Memory Stick slot.
2. use a compatible USB cable.
3. use an external Memory Stick reader with a USB connection.

Note that the PSP cannot read files converted in a rate higher then 768 KBPS.

Good luck

I CAN NOT SAVE VEDIO NO MY PSP

(1) It may depend on the firmware version of your PSP.
1. If the version is before 3.0, it seems that you have to make a directory named “MP_ROOT\100MNV01” under the root directory. Before you put your videos into that directory, you need to rename them like “M4V*****.MP4” (***** means five random numbers).
2. If the version is after 3.0, putting the videos into “VIDEO” document under root directory is OK. If there were no “VIDEO” document, just create one.
Actually if the videos you want to put into your PSP are not MP4 format, you need 3rd party software normally called video converter to do conversion. I prefer to use Aimersoft PSP Converter Suite to do that job for it supports various video formats to be converted. You can find it on:
http://www.aimersoft.com/psp-converter-suite.html.
Hope it helps.