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madVR wiki thread
flac.rules:
Thanks again for info, seems like it will be a bit easir for people like me to setup proper video-playback with good quality in windows. Because, framkly, it can be quite difficult to understand at times, with filters, encoders renderes, palyback-software and so on.
BryanC:
Looks like my low-powered HTPC setup doesn't have enough juice. What are the best setting to change in the madVR config to lower the requirements on the GPU? My HTPC is CPU heavy w/ bad graphics (Intel 945GM) that doesn't support hardware acceleration. Since madVR doesn't support DXVA, I thought the GPU requirements would be quite low.
madshi:
DXVA is usually a fixed circuit that has nothing to do with game/shader/math power. madVR does not use DXVA, instead madVR uses pixel shaders and texture reads to perform the rendering, just like games do. A game does not run faster because it doesn't use DXVA, so madVR won't do that, either. Think of madVR as a game, not a video renderer.
Intel GPUs are really slow on pixel shaders and texture reads. I'd suggest to switch chroma upsampling to "bilinear" and to switch luma up/downscaling to "mitchell-netravali". Hopefully that will allow you to playback at least 1080p24 movies fluidly?
BryanC:
Those settings didn't quite make it fluid, but by changing them all to Bicubic, it does seems to work. I have no idea if this is a better solution than using the default EVR....
madshi:
Something better for Luma than Bilinear would really be nice. You could try disabling some of the "trade quality for performance" option to check if that helps. If not, you may have to live with Bilinear, or use EVR instead. Can't really say which is better: madVR with Bilinear or EVR with a better scaling algorithm. You'll have to trust your own eyes on that. FWIW, I have some thoughts on how to improve performance a bit with a future madVR version, which *may* allow better scaling algorithms to be used with Intel GPUs, too, but I'm not 100% sure how much performance I can squeeze out and I also don't have a release date for that future version. Some other things to do first.
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