When I go into VirtualDub, the file formats I am told to look for, like YUY2 and RGB 24, aren't there. I have the following options:

ATI Packed TUV Data
YVU Planar (Indeo Raw)
YVU12 Planar (MPEG Raw)
ATI VCR 1.0
ATI VCR 2.0

When I try to go into Custom Video Formats, I still can't choose:

480x480 24 RGB or
480x480 YUY2 or
24 RBG or YUY2 at 640x480

If I try to choose any of the above, I get "Error 418 Unsupported Video Format"