[mythtv-users] OT: VDPAU and VP3 or VP2?
raymond at wagnerrp.com
Thu Jul 30 05:24:35 UTC 2009
Khanh Tran wrote:
> It seems the latest PureVideo implementation (VP3) is only supported
> on the rare desktop Nvidia cards (like this one:
> http://www.newegg.com/Product/Product.aspx?Item=N82E16814121235) or
> laptop/integrated motherboards. I'd like to get a few desktop cards,
> but the desktop cards, but I'm wondering if VP3 is really all that
> much more important than just VP2 in a newer card like the Geforce
> 9400 GT or 9500 GT.
VP2/3 are not official names for anything, however the 'rare' cards you
speak of offer a VC-1 entropy decoder to allow full bitstream offload of
VC-1. This was desirable early on with VDPAU, however several months
ago, support was added for the less capable cards to do this decoding
within the driver, allowing VC-1 decoding in all VDPAU-capable cards.
Currently, the recommendation for a discrete card is one capable of
using all available deinterlace modes at full 1080i resolution. That
typically means a 9500GT or 8600GT.
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