Using Badaboom and my 8800 GT to convert a 700 mB .avi into an mpeg-4 took about 18 minutes, and resulted in a 1.6 gB file.
Badaboom does have some problems with video quality and resizing, but it works perfectly for my iPod Touch.
I have yet to use TMPGEnc but it is supposed to have better quality.
Badaboom
TMPGEnc 4.0 XPress
Edit:
I attempted to use TMPGEnc, it is VERY slow.
I'm sticking with Badaboom, you get 30 free uses with a small watermark in the corner. But i ...got the full version of Badaboom
Encoded a 1 hour and 40 min movie in 17 mins and 30 seconds on an 8800 GT
Edited by EoE.Stubs, 20 April 2009 - 06:15 PM.