BleepingComputer.com: video shot from iPod, I'd like to get rid of the dark edges if I can

This is very odd. I have noticed that when shooting a movie on my iPod 4G, if I play it in an application like Windows Media Player or K-Light Codecs MPC, the video will show up just fine, taking up the entire screen as it does on the iPod itself (the way it's supposed to be), however when I upload the video to youtube or play it in iTunes, I don't get the beautiful full screen view with both the left and right sides of the screen blacked out. How can I fix this so that videos will play the same in all locations and services? And I wonder why the view is inconsistent? If you'd like an example of what i'm talking about, go to http://youtube.com/thechromebuster and look for my demo of a Dell Server and my workstation video. I shot that on the iPod, and people tell me that for being a visually impaired individual trying to film, I did pretty well. (though my friend's totally blind and she films better than I do.) Thanks for any hand with this. And if it's a visual thingo, I've got plenty of hands on deck here at college.