Re: Best video card for VDPAU?
Just a couple of notes: (1) The 8400 GS is marketed by NVIDIA to be at least VDPAU feature set A. Some 8400 GS are in fact VDPAU feature set B. NVIDIA doesn't provide any official way to determine which feature set a given 8400 GS will be prior to purchase. Some users have reported being able to tell based on GPU clock specifications. (2) The README file packaged with the NVIDIA driver provides a definitive list of supported GPUs and their VDPAU feature set.
Right now, if I was buying a GPU, I'd definitely buy a card with VDPAU feature set C, probably a mid-high range card to get the best de-interlacing performance.