Esetleg linket is dobhatnál ehhez a szöveghez, akkor tudhatnánk, melyik lámától származik... Valamit nagyon félreértett az illetõ, vagy eleve nem is értett semmit.
Biztos valamilyen manócskák végzik el a feladatot, amikor átkapcsolók hw-es gyorsításra, és a prociterhelés jóval lejjebb megy...
"PureVideo 1
Also known as simply PureVideo. First introduced with the Geforce 6 series, the original Purevideo engine improved upon the Geforce/FX's video-engine (VPE) by adding better deinterlacing algorithms and finer video-resizing for overlays. Compatibility with DirectX 9's VMR9 renderer was also improved. PureVideo inherited the MPEG-2 decoding pipeline from its predecessor, VPE. But in later models of the Geforce 6, PureVideo also offered hardware acceleration for VC-1 and H.264 video, though the degree of acceleration is limited when benchmarked side by side with MPEG-2 video. PureVideo offloads the entire MPEG-2 pipeline excluding run length decoding, variable length decoding, and inverse quantization [1].
PureVideo 2
While many PureVideo-capable cards could in fact play downloadable 1080p-video with a sufficiently fast host PC, HD DVD and Blu-ray's specifications push many such systems beyond their limits. In particular, one of the two compression-codes in H.264/AVC high-profile, CABAC, is notoriously unfriendly towards general-purpose CPUs. PureVideo 2 adds a bitstream processor (BSP) and enhanced video processor (VP2) to completely offload AACS-decryption and H.264-decoding. For VC-1 decoding, PureVideo 2 offloads the inverse discrete cosine transform (iDCT) and motion compensation stages, and relies on the host CPU to handle the bitstream processing/entropy stage of the video pipeline[2]."PureVideo (@Wikipedia)
Az R6xx alapú ATI kártyákban (kivéve a legelsõ R600-at, amiben nem teljes körõ a dolog) mind a h.264-et, mint a VC-1-et illetõen teljes körû hw-es gyorsítás van.