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16th February 2016, 14:13 | #36201 | Link | ||
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------- nevcairiel just released a new nightly LAV build with: Direct Blu-Ray 3D playback support Currently limited to only support playing SSIF files directly. See his post here: http://forum.doom9.org/showthread.ph...66#post1757466 |
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16th February 2016, 14:29 | #36203 | Link | |
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16th February 2016, 15:49 | #36204 | Link | |
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A more valid comparison would be using a natural looking picture and see whether it still looks natural and detailed after being downscaled but I just spent 15 mins on google and it's pretty hard to find a pristine looking 4K picture.....mostly because it would appear that the higher you crank the megapixels count the noisier sensors inevitably get to some extent(much like audio that mostly captures stray noise >88.2kHz from what Dan Lavry said) and even the nerdiests who go RAW and postprocess in pshop sadly don't have mVR at their disposal. It's rather unfunny how picture viewers/editors look terribly dated compared to mVR. Would need to use 4K demos screenshots I think. Last edited by leeperry; 16th February 2016 at 15:54. |
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16th February 2016, 18:34 | #36205 | Link | |
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16th February 2016, 18:39 | #36206 | Link | ||
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(original frame) Now are you really telling me that SSIM is too sharp and detailed, and that Catmull-Rom is the only way to get a natural looking downscale? To my eyes the Catmull-Rom image looks like I forgot to put my glasses on (if I had any). Quote:
Last edited by madshi; 16th February 2016 at 19:02. |
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16th February 2016, 19:14 | #36209 | Link | |
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I'll try to find a pristine looking 4K picture and come back with 1080p comparisons. |
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16th February 2016, 19:38 | #36211 | Link |
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FWIW, SSIM 1D & 2D gave me very nice results with the one UHD test clip I used on my 1080p plasma. Is it too sharp? I have no idea. SSIM 2D seemed even sharper than 1D. Jinc downscaling didn't seem much sharper than Catmull-rom. Granted I don't anticipate having much UHD content to play back so the discussion is mainly academic at this point to me.
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16th February 2016, 20:54 | #36212 | Link | |
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AFAIK, Downscaling also gets applied if you utilize Image Doubling/Multiplying for sub-1080p content. For example, 720p content with doubling will result in downscaling on 1080p display because 720x2 (doubling) or 720x4 (quadrupling) will result in image resolutions above 1080p (1440p when doubled or 2880 when quadrupled), thus requiring downscaling back to 1080p. |
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16th February 2016, 20:59 | #36213 | Link |
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Why is madVR using the term "Image Doubling" for a section that includes doubling, quadrupling, and even "octupling"? Why not just use "Image Multiplication" or "Image 2x/4x/8x Multiplication" ??? "Image Doubling" doesn't sound very accurate...
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16th February 2016, 21:11 | #36214 | Link | |
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bottom line is I guess you have to decide for yourself if you want everyone to go with the 1 step solution (or at least be more limited in your options compared to what leeperry wants) or leave room in case others want additional tweaking.
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Laptop Lenovo Legion 5 17IMH05: i5-10300H, 16 GB Ram, NVIDIA GTX 1650 Ti (+ Intel UHD 630), Windows 10 x64, madVR (x64), MPC-HC (x64), LAV Filter (x64), XySubfilter (x64) (K-lite codec pack) Last edited by Thunderbolt8; 16th February 2016 at 21:32. |
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16th February 2016, 22:07 | #36215 | Link | ||
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I can image double 720p24 and then scale it down to 1080p, but 720p60 was a no go last time I tried it. I've since gotten a PCIe 3.0 motherboard, gone all x64, and now there are more possible doubling routines so maybe I should revisit. However, with the previous options and the fact I didn't have any source of 720p24 content (it's not on Blu-rays or broadcast/OTA HDTV) downscaling after doubling was not common for me. I guess that leads to an interesting question in the case of 720p -> 1080p. Is image doubling with a super -xbr flavor and then downscaling with one of these new sharper routines preferable to straight Jinc AR upscaling? I'll have to test the render times for this later when I get home. |
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16th February 2016, 23:44 | #36216 | Link | |
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It's not though. Last edited by ryrynz; 16th February 2016 at 23:52. |
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17th February 2016, 01:08 | #36219 | Link | |
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No, the edges are better defined.. not sharper. It's more accurate to the source. If anything it should look slightly less sharp due to the absence of some ringing that 1D has, but it's hard to notice. Last edited by ryrynz; 17th February 2016 at 01:10. |
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17th February 2016, 02:33 | #36220 | Link |
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I think image doubling is accurate. A 4x resize is still a double -- it is a double of a double. Every resize is a multiple of 2x; therefore, it is a double.
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HOW TO - Set up madVR for Kodi DSPlayer & External Media Players |
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direct compute, dithering, error diffusion, madvr, ngu, nnedi3, quality, renderer, scaling, uhd upscaling, upsampling |
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