YouTube iPod help please?!?

Ok I have the YouTube app for my iPod, so I can watch most videos on YouTube. But sometimes there is a video that says "the author of this video does not allow playback on iPod" I made a couple of my own videos, and used movie maker and posted to YouTube but when I tried to watch them it says the same thing! How do I allow iPod to view the videos, or if I make a new one how do I change that?? Thanks!