So as much as I love Super Mario Galaxy, I think it's time for a new avatar. I'd like an animated one from a Youtube video, but I dunno how to crop out that little bit of the video that I want. Only other thing I can think of is trying to just replicate the .gif from scratch, which wouldn't be hard considering it's basically 8-bit sprites, but the former option is just much more convenient.

Anybody know a way to snip out the bit of Youtube video I need and how/where to upload it?