Firstly, like others have said, I don't want to use Google to sign in.
Also, why must I sign in? This seems like a tool and thus doesn'y need a login.
Which makes me ask... what's the pricing? When I do "sign up" do I only get one video? one minute? a limit of some type?
Also, what's the legal? Do you own the video? Can I monetize it?
An FAQ can probably help answer the above.