How do I make videos made in Windows Movie Maker fill the video box on YouTube?

Question by Aisling: How do I make videos made in Windows Movie Maker fill the video box on YouTube?
I upload videos to YouTube and edit them in Windows Movie Maker. When I upload and play them, there is always black borders either side of the video in the video box. I think it looks much better when the video fills the entire box, but so far I haven’t figured out how to get my Movie Maker videos to do this. Any advice?

Best answer:

Answer by Esther
change it to wmv file 🙂

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