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10th January 2015, 15:17 | #28008 | Link |
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I have a question about range and what will yield the best results.
Currently my arrangement is as follows: Nvidia output RGB Full 0-255 MadVR Limited 16-235 TV Limited 16-235 This way I preserve the BTB and WTW data and calibrate via the TV controls and AVSHD709 calibration patters in mp4 format with MPC-HC. The image behaves as though it is a good Blu-Ray player but in RGB instead of YCbCr. Plus, the image stays in its native limited 16-235 range and no Luma dithering is used, hence calmer image. More so, no range conversion stages at all, everything stays in its native range so no conversion errors. My actual question is should I clip the WTW, BTB and Chroma? Like so: Nvidia output RGB Limited 16-235 (range conversion: Full to Limited) MadVR Full 0-255 (range conversion: Limited to Full) TV Limited 16-235 This will result in two range conversion stages and added dithering, but it will clip the unnecessary data. Or so: Nvidia output RGB Full 0-255 MadVR Full 0-255 (range conversion: Limited to Full) TV Full 0-255 This will result in one range conversion stages (an excellent one I should add ) and added dithering, but it will also clip the unnecessary data. BUT, my Panasonic ST60 creates banding in RGB Full and 4:4:4 chroma, with my Nvidia card (I don't have ATI card to try). The PS3 has no banding at all in RGB Full Range 4:4:4 setting, with the same "Grey Ramp 0-255" image loaded via USB.
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System: i7 3770K, GTX660, Win7 64bit, Panasonic ST60, Dell U2410. Last edited by James Freeman; 10th January 2015 at 15:24. |
10th January 2015, 15:30 | #28009 | Link | |||
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What if you use madvr on two (or more) different screens for example? Another problem would be the subjectivity of some settings, for which you would need user input anyway. To make a few examples: what is a "better" scaling algorithm - do you want lanczos with anti-ringing or jinc without ar? is it better to have debanding or error diffusion if you have performance only for one of them? is it better to have NNEDI luma doubling with 64 neurons or luma doubling with 32 neurons and chroma doubling with 32 neurons? do you really need NNEDI doubling with 256 neurons for anything (assuming your GPU can handle it)? Most importantly: at what point is the added energy consumption or rather heat and noise not really worth the miniscule quality gains? To sum up, in my opinion it's not worth the time invested in developing such feature, especially if to make it really worth it you need user input which kind of defeats the purpose of automation Quote:
It does happen for me because I have the decoder queue empty at first, then it gets full before I toggle full screen. The render times do lower over time for me also without doing anything, since it's an average value. To make sure, reset the stats with CTRL+R instead of toggling the full screen and see what happens. Quote:
If I understand you wrong, please check with other video renderers (e.g. EVR) and report back, if the problem still occurs. |
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10th January 2015, 15:36 | #28010 | Link | |
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http://www.avsforum.com/forum/139-di...l#post23274961
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10th January 2015, 15:43 | #28011 | Link |
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Thanks huhn.
No its not a Déjà-vu, or an error in the matrix. I tend to ask the same question from time to time to reassure myself that I made the right choice.
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10th January 2015, 15:50 | #28012 | Link | |
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11th January 2015, 00:28 | #28013 | Link | |
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I suppose it's largely irrelevant anyway since you can always reshow the previous frame if a new one isn't ready. For example, if your minimum refresh rate was 10 Hz (0.1 s between frames) but no frame is sent within 0.1 s, then just reshow the previous frame and wait for a new frame in the next 0.1 s. The only minor problem would be if a new frame was sent very soon after a previous frame was re-used. Whether that would cause a delay to that new frame depends on the maximum refresh rate of the monitor.
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11th January 2015, 00:51 | #28014 | Link |
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I have a question and I'd like to report a bug as well.
I'm using a Radeon R9 290 + catalyst 14.12 on Windows 8.1 64-bit, with 2 monitors. And I've found this strange behaviour with madVR: I don't know if you are aware of this, but I'm reporting it here in case you weren't. And then I have a question regarding madVR's GPU usage. Please have a look at this screenshot: http://i.imgur.com/tTjmXId.jpg It shows that madVR is ignoring the Clockspeed limits set by MSI Afterburner. The GPU just runs at full clockspeed, and this hurts the video, since my low voltage levels forced by Afterburner still applies even on full clockspeed. Is there a way for me to configure madVR so it respects MSI Afterburner? |
11th January 2015, 01:12 | #28015 | Link | ||||
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If you don't refresh quickly enough you can notice the next refresh as a flicker because colors that were supposed to be static between the two frames changed to other values before the second frame was displayed. It is a very different mechanism for flickering (and a very different flicker) but it is still unpleasant. Quote:
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11th January 2015, 01:13 | #28016 | Link |
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Rotated screens are not supported by madVR, known issue.
And personally I doubt madVR can influence the clockspeed that the GPU uses.
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11th January 2015, 01:28 | #28017 | Link | |
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I know that my laptop screen is capable of reducing to 40 Hz to conserve power, although I turned this feature off because the difference is noticeable to me.
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11th January 2015, 18:07 | #28018 | Link | |
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11th January 2015, 19:12 | #28019 | Link | |
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Do PC mode means 0-255 color range and no overscan? Because changing refresh rate doesn't seem to change those. Also let's remember it enters in this mode only after switching back from Windows Media Center. The problem is that I suppose the preferable rate (50Hz from 25fps source) is enabled only entering this mode, but colors get worse. As the smooth option I can't use it because I can't handle it. |
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11th January 2015, 23:41 | #28020 | Link | |||
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a TV normally doesn't enter PC mode on it's own. so you should know if you set it up for this or not. [quote]Also let's remember it enters in this mode only after switching back from Windows Media Center. The problem is that I suppose the preferable rate (50Hz from 25fps source) is enabled only entering this mode, but colors get worse. [quote] what refresh rate is madVR reporting be for you enter WMC and what after? Quote:
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Tags |
direct compute, dithering, error diffusion, madvr, ngu, nnedi3, quality, renderer, scaling, uhd upscaling, upsampling |
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