Video recording asus transformer
I am having the same problem and I think I've got the solution. I'm thinking of 2 ways:


Buy an HDMI to component or HDPVR converter and buy a capture card (cheapest) 
Buy an HDMI capture cart (very expensive). 


You have to make sure the HDMI capture card will be HDCP compatible because otherwise it will refuse to receive the encrypted video.  Of course, that's the same for the converter but that costs about 40 euro.