I need help rendering a video I made. I can't figure out how to do it correctly. The video is about 3:30 secs long, I want to render it as a wmv, and I intend to put it online. But when I try to render it, it comes out very blurry whenever anything is moving. The original video is not blurry. Plus the file size is 465 MB when I render it. I'd just like to know how to make the render look good, but still have a small enough file size for online viewing.

Thanks.