Well yeah I understand to not use a codec, but the space requirements for uncompressed video are crazy! Plus if your file goes over 2 gigs using the TF2 recorder the file goes corrupt. I learned that the hard way just recording 5 minutes of uncompressed 720.
on a funny side note, when I tried fraps for the first time, TF2 gave me items while a demo was playing! too bad I didn't click F9 before they came up, would be a funny thing to show on the valve forums.