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a11599
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@rainking430: Do you have the issue that video goes black if you change scaling options during video playback?
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a11599
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Thanks for the feedback guys. The video blanking thing then was probably a video driver issue. It was reported in the original PR, but this gives some hope and maybe I will update and re-submit the patch again.
Framedrop with the GTX 460 is strange. That card has plenty of power to do it. Even the ION should cope with at least the optimized versions. Might be a driver issue?
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2013-04-15, 19:54
(This post was last modified: 2013-04-15, 19:55 by rainking430.)
Maybe, but I checked and I am running the latest stable driver. Actually I don't think it's a framedrop, the TV literally blinks for a second or 2 like it loses the signal. Wouldn't a framedrop just be a stutter?
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a11599
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Yes, a framedrop is just stutter.
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2013-04-16, 22:09
(This post was last modified: 2013-04-16, 22:12 by rainking430.)
@a11599: Thanks for confirming that.
@StinDaWg: Not sure, maybe you're right? I only started using madVR recently and just followed a guide online to set it up in conjunction with my GPU, so I'm by no means an expert. I know some aspect of madVR hits my GPU pretty hard, because you can hear it's fan ramp up quick when I play a file. When set to use lanczos/spline/even softcubic it looked much better to me than what XBMC could do, but the annoying thing is that you have to use an external player to access madVR, and MPC-HC is just really limited both GUI wise and in what you can do during playback. Because this patch now makes lanczos/spline accessible within XBMC via DXVA, for me this has narrowed the visual gap enough that I have shelved madVR for the time being in favor of XBMC playback. Also, if I'm not mistaken, XBMC's built-in reclock option is similar to madVR's smooth motion feature. There are still a couple other things missing in XBMC vs madVR, but that's ok for now.
Update: So in researching this post, I think I need some clarification myself if anyone knows. I looked in madVR's options and find that lanczos/spline, etc. are only under Pixel Shader options. So what's the diff between DXVA and Pixel Shaders in XBMC? Does one give better PQ than the other? Do they both use the GPU? Can Pixel Shaders be used with lanczos in XBMC?
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I'm not expert on this so this might be not totally right but I'm sure it's not totally wrong. But all scalers algorithm including Lanczos & Spline in XBMC (this patch) is using Pixel Shaders already. It's just that when DXVA is turned on they are normally limited to DXVA Scaling method. This patch removed that limitation and allow DXVA to be used in HW accerelated decoding task and allow pixel shaders scaling at the same time.