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22nd January 2020, 20:12 | #58401 | Link |
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I think it's realeted to resizing. E. g. play a 2160p video on 1080p screen:
- normally chroma will be upscaled to 2160 and then both to 1080 - if it's enabled then there won't be chroma doubling
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22nd January 2020, 20:37 | #58402 | Link |
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You do get different chroma... whether or not it is worse is more debatable. In testing it does seem better to handle chroma the same as luma but it is one of the least loss of quality options in trade quality for performance.
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22nd January 2020, 21:45 | #58403 | Link | |
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Quote:
https://i.imgur.com/HZOJZpJ.png https://i.imgur.com/1MmvsgE.png My exported Potplayer settings are here. |
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23rd January 2020, 13:19 | #58404 | Link |
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Having problems with repeated frames on 24.000fps content. I've nuked my drivers and reset Madvr to default still seeing the same issue (1060GTX.)
Please see attached images. I am not able to access 24.000hz fine tuning. 23.976hz I can. I nuked my drivers and tried 24 again before fine tuning 23.976 incase it was causing issues didn't make a difference. |
23rd January 2020, 14:28 | #58405 | Link | |
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Quote:
24.000Hz and 23.976Hz sometimes 'interfere' in certain setups/drivers. A possible workaround could be to use multiples of these values (so youŽll have e.g. 23.976Hz and 48.000Hz or 47.952Hz and 24.000Hz or 72.000Hz... Of course this depends on your display deviceŽs capabilities, so your monitor/tv/beamer has to accept these refresh rates. |
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24th January 2020, 01:47 | #58406 | Link | |
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Quote:
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24th January 2020, 01:50 | #58407 | Link | |
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Quote:
But since 444 60hz only works in 8bit, and autoswitch 23/24hz is hit or miss depending on driver, I've stuck with 8bit. I've not seen 10bit input produce noticably smoother gradient either because madvr's dithering is great.
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24th January 2020, 01:57 | #58408 | Link | |
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Quote:
is this true ? we all have to buy 1080tis now ?
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24th January 2020, 02:37 | #58410 | Link | |
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Quote:
You have to connect via Displayport to have 444/60Hz 10bit and some newer driver versions don't like it. |
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24th January 2020, 04:19 | #58412 | Link |
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I haven't noticed anything else except 10bit path playing gradient files smother than 8bit path. I just did that for testing only, and always enable dithering in madVR. I have to find out how to test videos such as football matches in browsers to see if 10bit path might have any effect.
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24th January 2020, 07:05 | #58415 | Link |
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if the web browser doesn't dither(they don't) 10 bit rendering would be always better but it's not that easy to render 10 bit so they generally don't do that.
10 bit rendering with dithering on a screen that doesn't support it will always win against 8 bit none dithering. so what is the point of looking at 8 bit none dithered ever why should 10 bit none dithered not always be better? i mean the screen doesn't even matter in this case. |
24th January 2020, 07:31 | #58416 | Link |
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Managed to get MadVR to accept a 24hz custom mode by going for 23.999xxx hopefully after a few runs I can get it closer to 24. Not sure why I can't start off from my EDID it just won't accept it with an unknown error.
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24th January 2020, 15:27 | #58417 | Link | |
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Quote:
There is a well documented bug with AMD HDR API which causes this, its nothing to do with tone mapping, AMD's private API isnt sending BT2020, we have to use windows HDR API for now. I'm already using MADVR's tone mapping, however I have to turn on WINDOWS HDR first which isnt ideal but there is no fix in sight for this bug yet.
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24th January 2020, 16:45 | #58418 | Link | |
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Quote:
With dithering disabled you are not reality testing your 8 vs 10 bit paths. 10 bit will always look smoother even if, with dithering, 8 bit would look smoother.
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24th January 2020, 18:55 | #58419 | Link |
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If you're unsure whether your display is 8-bit or 10-bit, there really isn't a test to determine that 100% anyway. But if you know the bit depth, you can certainly test for banding in different desktop and TV modes. And for that, I would recommend disabling dithering in madVR. You still can't be sure that the video card itself doesn't do any dithering, but it's a start. Just make sure to turn it back on when you're done testing.
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24th January 2020, 19:15 | #58420 | Link |
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@Mclingo, I'm very curious to follow this bt2020 bug, could you please lnk something regardig the documentation you are referring to?
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Tags |
direct compute, dithering, error diffusion, madvr, ngu, nnedi3, quality, renderer, scaling, uhd upscaling, upsampling |
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