The big problem with recording any kind of video or audio on the web is Flash. It's a nightmare with well-known _major_ bugs in Chrome (good luck clicking on "Allow" if you're a Macbook Pro with Retina display user). If you guys can find a way to (a) solve that, and (b) take away that pain for other users, then you have real value here.
Seriously, I can't wait for HTML5 to be fully supported.