vimeo meta removal

Hey Guys.
Firstly, love the theme, excellent!
We use vimeo for some of our videos and it would be great if we could remove the meta data on it .. i.e. the portrait, byline and text below the video.
I can do this if I use the vimeo embed code, but I have to specifiy the size then .. which I would rather not do … Is it possible? even if we just hard coded it in?
I tried looking for the code where the iframe for the video is generated but I can’t find it ..
Any guidance much appreciated.
Graham.