Well I guess if you bypass the Hack shield then you might be able to use Game Cam. Since the Hack Shield won't allow Third-Party programs, bypassing the hack shield might allow you to use the Game Cam. So try that.
But then again, there's the Fraps program. It causes less lag and is more accurate when recording, in my opinion that is.
However I'm just a Choob. Don't bother listening to me