With this video:
ID                                       : 2
Format                                   : VC-1
Format profile                           : MP@HL
Codec ID                                 : WMV3
Codec ID/Info                            : Windows Media Video 9
Codec ID/Hint                            : WMV3
Description of the codec                 : Windows Media Video 9 - Professional
Duration                                 : 1mn 59s
Bit rate mode                            : Constant
Bit rate                                 : 8 000 Kbps
Width                                    : 1 440 pixels
Height                                   : 1 080 pixels
Display aspect ratio                     : 4:3
Frame rate                               : 23.976 fps
Bit depth                                : 8 bits
Scan type                                : Progressive
Compression mode                         : Lossy
Bits/(Pixel*Frame)                       : 0.215

http://d-h.st/Uri

uvd hang gpu on rv740 (rv730 agp the same).