Could you please add the hardware requirements to the documentation?
I remember differences in the grade of hardware support by the variants of the GeForce 8xxx family, and I wonder if this project requires a minimum variant (I mean, on-board / mobile IGPs and low-cost variants like 8300/8400{M} might not support DXVA enough to be of use for AVC decoding).
"Minimum hardware requirement: GeForce 8500" would be a probably sufficient example to know that one needs a stand-alone graphic card and may not get an on-board solution to work (if that is the case; but if IGP/Mobile are fine, let's say "8xxx").
TechARP - Desktop GPUs: Nvidia
TechARP - Mobile GPUs: Nvidia