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8th December 2016, 22:00 | #41301 | Link |
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Doubling the chroma channel is pointless. The Luma channel should be doubled and then all scaling should be done and then finally the chroma channel should be scaled. This will avoid needlessly doubling the chroma and then scaling it back down.
And no there is currently no way to do this I have tried multiple times. any form of doubling results and doubling of the Luma and chroma channels, even when scale chroma separately if it saves performance is checked. what we need is a setting such as "scale chroma last." |
9th December 2016, 02:38 | #41303 | Link |
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Can anyone tell me how to use those HDR test patterns to work out my nits value? Also I would prefer to run my OLED55B6V in wide color gamut (Reds look more like red rather than orange red) with 'deep color' set on the HDMI input. However they are a little oversaturated on video. I know without calibration this is not ideal but is running DCI-P3 correct? I'm outputting 4:2:0 video to a 4:4:4 yCbCr pixel format (that's what the RX 480 chooses by default but full RGB seems better to my eyes when using DCI-P3 and way oversaturated in 709) and MadVR plays it at 10bit 4:2:0 FSE. My issue is it's either oversaturated reds and greens in 709 or some odd 'off' looking reds in DCI-P3 colorspace. BT2020 just looks straight out washed out. The whole thing is kinda confusing.
Last edited by oddball; 9th December 2016 at 03:14. |
9th December 2016, 03:56 | #41304 | Link |
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madVR always renders to RGB, having your GPU convert to 4:2:0, or even 4:4:4, after madVR is not optimal.
To get correct colors from madVR you need to tell it what gamut your display has. For the HDR Standard mode (don't use the other HDR modes) set "this display is already calibrated" to DCI-P3 on the calibration page, the OLED55B6V has 95% coverage of DCI-P3 in HDR. Sadly its greens are not quite right but that is the best you can do for wide gamut without creating a 3DLUT for it. It is much more accurate in its SDR modes. For BT.709 content use ISF Expert (Bright Room) or ISF Expert (Dark Room) and tell madVR it is already calibrated to BT.709. Based on reviews this is how I would run that display, if I didn't have calibration hardware.
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9th December 2016, 06:43 | #41305 | Link | |
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Quote:
On the other hand, the differences with NGU doubling are immediately noticeable. No need for a magnifying glass and it's applicable to all sources. I've been around using madVR and reading doom9 just as long as you (or longer) and am entitled to my opinion just like everyone else is. Irrelevant point. |
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9th December 2016, 07:23 | #41306 | Link | |||
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Regardless of size in this example, these same effects are at work and give a clear guide as to how each algorithm works in this particular situation. Something other people interested in such differences who have requested such are interested in viewing. If you're not interested then just don't comment. Quote:
Does madshi overrate chroma by allowing NNEDI 256 neurons as an option, or future improvements for it with NGU? Does Shiandow overrate it with his time spent on his bilateral upscaler? Does feisty2 overrate it with his time spent on Chroma reconstructor? These are options available to us from people who have invested considerable time into something they feel is important. It's wise to be knowledgeable about such options if they're provided regardless how how little they may affect the output in many situations. These people spent the time to create these options and madshi has provided these to us after deeming them suitable as such, even hardware manufacturers like Panasonic specifically advertise their chroma upscalers even on newer UHD devices. To each their own. They have value in attaining high image quality and the proof is right there in front of you as I just highlighted. Quote:
TBH I feel few people here share your view on the matter, also stating experience and knowledge is not irrelevant at all, it's quite pertinent to your comments actually. |
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9th December 2016, 07:52 | #41307 | Link | |
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Most people don't notice such things but both my HP monitor and my previous Panasonic plasma I calibrated using the old method and kinda got used to it |
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9th December 2016, 09:23 | #41308 | Link | |
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Quote:
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Intel i5 6600, 16 GB DDR4, AMD Vega RX56 8 GB, Windows 10 x64, Kodi DS Player 17.6, MadVR (x64), LAV Filters (x64), XySubfilter .746 (x64) LG 4K OLED (65C8D), Denon X-4200 AVR, Dali Zensor 5.1 Set Last edited by Sunset1982; 9th December 2016 at 11:18. |
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9th December 2016, 12:17 | #41309 | Link | |
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Serious, possibly dumb, question: am I "looking at the wrong things" or is it just a matter of preference (I guess it would mean I prefer softer scaling, right)? |
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9th December 2016, 12:31 | #41312 | Link | |
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I suppose the very high setting is attempting to preserve more detail, hence also emphasizing possible artifacts. By my logic it would imply NGU very high would work best for high quality sources and NGU low for SD upscales. Though from what I understand, most (?) here think "the more passes the better" for NGU - and I was probably expecting the same. |
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9th December 2016, 12:40 | #41313 | Link | |
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power management is a lot better as least for me that's it. i understand something else under "very much better"... |
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9th December 2016, 13:41 | #41315 | Link |
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It's hard to know how it should look exactly. I'm thinking much like how NGU very high displays it? Definitely not a dumb question. At the end of the day it's just one image that shows clearly visible changes between the algorithms, not obviously displaying what's more accurate or what affects the picture beneficially the most, which may be why huhn doesn't like it. I'll continue to look for better examples.
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9th December 2016, 15:27 | #41316 | Link | |
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Full potential? Have you enabled the dxva? dxva should be off. Last edited by HillieSan; 9th December 2016 at 15:32. |
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9th December 2016, 16:41 | #41318 | Link | |
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How to set luma upscaling?
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Hello! This interesting. Being a noob, may I ask which settings are adequate for my needs, I mean optimize luma? Currently I use NGU in this menu : (sample image to illustrate the menu) Should I set this off and use this feature : NNEDI image doubling ? (sample image to illustrate the menu) I use madvr on 1080p sources on a 1080p projector on a huge screen.
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I7 2600K@4.4 / GTX1080 / ACER M550 (DLP 4K) / Catleap (IPS 1440p) / Onkyo SE200 Sound card Last edited by Paul Tronc; 9th December 2016 at 16:49. |
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9th December 2016, 18:42 | #41319 | Link | |
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HOW TO - Set up madVR for Kodi DSPlayer & External Media Players |
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10th December 2016, 03:00 | #41320 | Link | |
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I've found "Lanczos3 AR" to be the closest to NGU, and I don't want to waste resources on NGU for this chroma operation (and "Bicubic60 AR" is too soft). Last edited by Neo-XP; 10th January 2017 at 17:28. Reason: alternative |
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Tags |
direct compute, dithering, error diffusion, madvr, ngu, nnedi3, quality, renderer, scaling, uhd upscaling, upsampling |
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