Help WIth Videos for my 8300

Hello I have a curve 8300 for sprint, and I have the SD card inside it and connect it to the computer. I want to put videos on it, but it can never play them. Exactly what program do I use, and how do I convert movies for the specific 8300 model to display on my phone? Plus I want the movies to play full screen, that is using the whole screen. Ive put vids on, but the dimensions were too small. Thanks.

I just got this to work.
Only youtube videos though.
You need to convert to .3GP and make the videos 380 to 240.
Or whatever the 8330 screen resoultion is.
That's all I got.
Then I just put into the SD Card. No DM.

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yeah i only do youtube vids, but what program do I use to convert them? and make them? etc.,.