Getting DXVA to work in windows 7

[ShRoOmAlIsTiC]

makes sense thanks man. ive had great luck re-encoding the files to have dxva support. seems the best route to me.

[Patrone]

I've put the 8800 GTX in the PC of my daughter (Vista32) - before she had the 9800 GTX+ - she still can watch all her MKV H264 movies with just below 20% of CPU-usage with no stuttering and so on (DXVA is on via the Powerdvd 8 decoder) - so its working without problems there (AMD X2 4400 cpu). My HTPC with the 9800 GTX+ is working fine now.

[ShRoOmAlIsTiC]

was the movie 720p or 1080p?

when your playing a dxva video on mpc-hc with the 8800gtx, right click on the video, goto filter and click on mpc decoder. look and see if it says dxva or not using dxva. Im 99.9% positive that its not using dxva cause that card does not support it. thats the reason I got rid of my 8800gts 320mb.

[Boyfriend]

CoreAVC + mpc-hc are good choice for mkv on NVIDIA cards. After CoreAVC + Haali installation --> Configure CoreAVC --> enable Prefer CUDA acceleration. It will then use CUDA for decoding. Go to mpc-hc --> options --> select Haali Renderer in output --> then disable the following Transform filter: H264/AVC (DXVA), H264/AVC (FFmpeg), VC1 (DXVA), VC1 (FFmpeg), Xvid/MPEG-4, MS MPEG-4, and source filters: Matroska, MP4/MOV.
Restart MPC-HC. It should work fine with every mkv, mp4 and other file with negligible cpu usage. Haali Renderer isn't bad for mkv. It works for me like charm under Windows 7 x64 RTM. I love the quality of mkv with 1/3 size of the original. Subtitles also work fine. In case CoreAVC isn't able to decode the stream, mpc-hc will automatically use internal filters with low priority.

[Wile E]

For CUDA, any Directshow player will work. Don't need MPC-HC. I use Zoom. (I personally hate MPC-HC).

And mkv doesn't make anything 1/3 the size. Mkv is just a container, it has nothing to do with the size of the file.