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<blockquote data-quote="kszabo" data-source="post: 236015" data-attributes="member: 61646">I guess it is possible to let the graphic card to do the deinterlacing even without DXVA. Is it true? Experts, please comment.according to my research untill now:- basically possible- can depend on the video mixer (VMR, EVR) and therefore on OS (XP/Vista)- can depend on your graphic card+driver- can depend on the directshow codecIt is important, because it could make playing 1080i HDTV broadcasts possible with low-range graphic cards (like mine x1250 without h264 HWAcc support): we let to decode the stream with software (CoreAVC) without deinterlacing and give this duty to the graphic card.I guess that's why I could not get 1080i work with XP but very easily with Vista. Deinterlacing can cost up to 30% CPU even for dual cores. Just check out the first 2 test results: 8 Mbps 1920*1080 h.264 i vs p with CoreAVC 52% vs. 26% CPU load!<a href="http://www.digit-life.com/articles2/video/video.dec.2007.html" target="_blank">AMD/ATI and NVIDIA Graphics Cards in Video Decoding Tasks: June 2007</a></blockquote>

[QUOTE="kszabo, post: 236015, member: 61646"] I guess it is possible to let the graphic card to do the deinterlacing even without DXVA. Is it true? Experts, please comment. according to my research untill now: - basically possible - can depend on the video mixer (VMR, EVR) and therefore on OS (XP/Vista) - can depend on your graphic card+driver - can depend on the directshow codec It is important, because it could make playing 1080i HDTV broadcasts possible with low-range graphic cards (like mine x1250 without h264 HWAcc support): we let to decode the stream with software (CoreAVC) without deinterlacing and give this duty to the graphic card. I guess that's why I could not get 1080i work with XP but very easily with Vista. Deinterlacing can cost up to 30% CPU even for dual cores. Just check out the first 2 test results: 8 Mbps 1920*1080 h.264 i vs p with CoreAVC 52% vs. 26% CPU load! [url=http://www.digit-life.com/articles2/video/video.dec.2007.html]AMD/ATI and NVIDIA Graphics Cards in Video Decoding Tasks: June 2007[/url] [/QUOTE]

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