There's not really a definitive way of how to put video on PSP, but there's a fast and easy way, and this is it. It's not rocket science, but Sony hasn't made putting video on a PSP as simple and straightforward a task as they should have done. But that doesn't mean it can't be simple. Here's how to do it...

You need a memory card with a lot of memory, unless you want to watch tiny little videos that might just fit onto the PSP's default 32Mb memory card. Videos are big files and they take up a lot of space; 32Mb doesn't go far. Go for half a gigabyte at least.

There's lots of places where you can get one. Amazon.com are good. Their SanDisk SDMSPD-512A10 512Mb Pro Duo memory stick is currently less than $25. Do a search on Amazon for it in the electronics category. If you don't have a Sony product, you'll need a USB cable for the PSP. Again, Amazon have them and they're cheap. Search for a PSP USB Data Cable.

At this point it is assumed that you have access to a computer connected to the Internet. Dialup might work, but you really need a high-speed connection. The good news for any Mac users is that this method works for you as well as for the PC.

OK, here we go...

With the PSP switched off, connect the USB cable to the PSP and to the computer, then switch on the PSP. On the PSP access: Settings > USB Connection. Next, press the X button to boot the PSP on to the computer, where it will appear on the desktop as an untitled volume. Inside the memory card you should see a folder named "PSP" and inside that folder there will be four sub-folders of, "Games", "Music", "Saveddata", and "Photo". You must add a new folder here named, "MP_ROOT" (without the quotes) which must be in the same level as the "PSP" folder. Under the "MP_ROOT" folder add a sub-folder named "100MNV01" -- this is where your MP4 videos and their accompanying thumbnail files (*.THM) will be stored.

Now all you need to do is start downloading MP4 videos. A search for "MP4 videos" in Google in July of 2006 brought up 4,660,000 results, so there's plenty to choose from! Once you have your video(s) downloaded on to your PSP, go to Video > Memory Stick, and there you should see the thumbnail file of the video. To play the video, click on the thumbnail. You can access the screen display modes via the triangle button. There are four to choose from. Now you know how to put videos on PSP, so enjoy your viewing!