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15th February 2017, 06:03 | #42461 | Link |
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As I remembered, Madshi has mentioned an idea of remove movie-like spots from the original picture, upscaling the cleaned picture then add the upscalied spots back to the upscaled cleaned picture. I wonder if this idea can be extended to something else, like noise or other effects?
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15th February 2017, 06:07 | #42462 | Link |
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I did some testing using a normal quality source, I don't know how it was encoded as I just found it on youtube but it's obviously not bluray quality but it's not complete crap either. I think it's useful to have comparisons when the sources aren't on either extremes. It's pretty much just geometrical shapes so meh, madshi has probably done his own testing.
I compare regular NGU, nnedi3, and superxbr. I was going to test every combination, but realized 15min in that i'd be there until tomorrow. The pictures are mostly the highest levels you can select on each algo. nnedi3 and super-xbr are quadrupled - it makes quite a difference on nnedi3, but not that much on super-xbr. NGU levels for chroma make quite a difference. nnedi3 levels not really. NGU luma levels make even more of a difference, low to medium is quite the upgrade. I tried pixart after, and it looks the worst for luma. However, it looks very similar to nnedi3 for chroma. http://imgur.com/a/h2Imd |
15th February 2017, 15:46 | #42463 | Link | ||
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Currently I am using KeepLastFrameOnStop folder "hack" and it hasn't locked up for 2 days. I also checked "use a separate device for presentation" and "use a separate device for dxva processing". I'll keep doing that and if it ends up locking up again I know I can move on and try something else (lowering present in advance as you suggested). It really sucks but if there is no fix then I guess I'll just deal with it for better PQ. |
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15th February 2017, 15:47 | #42464 | Link | ||||||||||||
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Can you maybe create another sample for me with which I could reproduce the problem? Doesn't have to be a full 4-8GB DVD, you can probably cut the movie VOB down to a small size, so that maybe just the first 2 minutes or so are playable. Quote:
So my last post (with the dozens of replies in it) to see some recommendations I made there for another Samsung 4K display user. Quote:
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15th February 2017, 15:48 | #42465 | Link | |
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15th February 2017, 16:05 | #42466 | Link | |
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Just want to make sure we are on the same page here, but obviously what I am referring to happens on the former. I can exit out of fullscreen 1st and then close the player without issue, it's only when closing from fullscreen that it sometimes locks up. Also I tried MPC-BE and same thing happened, so it eliminates the issue as being player specific. |
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15th February 2017, 16:06 | #42467 | Link |
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The GPU just interpolates, it has no clue if it's downscaling or not, this means it uses at most 2 pixels in each direction to calculate the interpolated value (so 4 in total). Now even the narrowest possible kernel for downscaling, a box filter, can use as many as 9 input pixels to calculate a single output pixel. This is because any pixel larger than the original pixel can overlap up to 9 of the original pixels. Now it's debatable what the proper downscaling analogue of bilinear interpolation is, but it's not just bilinear interpolation, not even for scaling factors <2.
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15th February 2017, 16:11 | #42468 | Link | ||
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MPC-HC and MPC-BE are closely related. You'd need to test a totally different player to make sure it's really not media player specific. Quote:
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15th February 2017, 16:30 | #42469 | Link |
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The thing is that I like the slight EE sxbr gives, especially in combination with SR as they look amazing together on fast-motion 720p movies IME and NGU is slower than usual on AMD 480's apparently? It also isn't SR-friendly due to excessive bloating and we need horse-power for 2160p upscaling you know.
Anyway, please don't leave us NGU as the only option because as much as we don't miss NEDI I can certainly see some NNEDI3/sxbr lovers and again options are good, we got half a dozen linear scalers to pick from at every step so what's the big deal with three doublers Last edited by leeperry; 15th February 2017 at 19:30. |
15th February 2017, 16:57 | #42471 | Link |
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You're missing the mark. NGU pixart is aimed at replacing NNEDI3 1:1. The goal is to achieve the same look and quality at faster speed. Whether or not NGU pixart is there just yet is a matter of discussion. But once it is, why would anyone use an algorithm that doesn't look better, is slower and requires OpenCL with its unstable drivers?
This is about NNEDI3, though. super-xbr clearly has a different look to it and NGU pixart is not meant to reproduce the super-xbr look. However, most users probably consider NNEDI3 to have better image quality than super-xbr. So once something is available at equal or higher speed than super-xbr with better image quality, arguments for keeping super-xbr might be hard to find. But again, maybe we're not there just yet. I'm using Ctrl+C, but not to close but to exit. By default Ctrl+C closes. I've changed it to exit instead. |
15th February 2017, 17:01 | #42472 | Link | |
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From TV what I get officially is film mode ONLY for 1080i in HDMI,there's no mention for general 24p support or anything.Everything's supposed to play at 60hz and film mode is greyed out. By playing with Madvrs display modes ''it bypasses'' what I explained and I have 24fps at 24hz, 25fps at 25hz and beyond.... in 4096x2160 resolution with everything I put. There's no official support for that but it seems to work. Here what Madvrs OSD reports http://imgur.com/a/gpakS and here what TV reports http://imgur.com/a/AzCMC It's not supposed to happen officially but it happens and I'd like to keep it like that.The thing is,am I gonna have a problem/damage the display in the long run for some reason? |
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15th February 2017, 17:05 | #42473 | Link |
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No, I don't think you did. Or is 4096x2160 the physical resolution of your display? I doubt it. Most 4K displays are 3840x2160 and not 4096x2160. So you probably did not follow my recommendation to use the physical resolution of your display. Or am I wrong?
I don't think it's easy or even possible to damage digital displays by sending unusual resolutions/refresh rates. If your TV doesn't like the signal you're sending, it will not sync. If it syncs, there should be no problem. |
15th February 2017, 17:14 | #42474 | Link |
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"all" UHD TV support an input of 4096x2160 and it is not the native resolution only projector have this resolution.
he send 4096x2160 the TV is downscaling it to 3840x2160 by using the fit to screen option without this option it is cropping the image (which is the correct way to handle it unlike fit to screen.) of cause 4096x2160 is supported but it is suboptimal to say it very friendly. |
15th February 2017, 17:26 | #42475 | Link | |||
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Fit to screen is 1:1 pixel mapping. Last edited by Damien147; 15th February 2017 at 17:29. |
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15th February 2017, 17:29 | #42477 | Link | |
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Before "close' was mapped to "close", now it's mapped to "exit". We'll see if that makes any difference as they seem to both do the same thing. |
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15th February 2017, 17:36 | #42478 | Link | |
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select the resolution 2048x1536 and you may understand it. |
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Tags |
direct compute, dithering, error diffusion, madvr, ngu, nnedi3, quality, renderer, scaling, uhd upscaling, upsampling |
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