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16th November 2019, 23:27 | #23 | Link | |
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Commonly you're right but in case of static it's equal. Btw high quality double framerate deinterlacers (i.e. Yadif) gives enough video quality for not too fast moving to say i50=p50=50p - in case of progressive video place of p doesn't important. |
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20th June 2020, 14:21 | #24 | Link |
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After mpv I've just found that VLC 3.0.11x64 (in Win7x64) with OpenGL video output gives ~ right colors (incl. red) while playing HLG on SDR monitor.
Who can extract ps_2_0 or ps_3_0 shader from I suppose libplacebo (license is LGPLv2.1+) to use in app SmartDVB? Last edited by VictorLS; 20th June 2020 at 14:54. |
5th July 2020, 21:44 | #25 | Link |
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I've reuploaded 20190526-164153_RTL UHD.ts (687MB) https://transfiles.ru/gyjv4 for HLG tests.
Here's https://transfiles.ru/2a2f9 two new shaders but still give wrong colors on my own (tested in MPC-HC 1.9.6) May be someone can adjust parameters to achieve colors like in mpv and VLC? |
14th July 2020, 18:08 | #26 | Link |
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I've made some screenshots from 20190526-164153_RTL UHD.ts on Ryzen 3 3200G under Win10 2004 with Adrenalin20.7.1 (on 50Гц DVI) HLG.7z (19 MB) https://transfiles.ru/gx1mz and had asked people with eyes seeng right colors what png is nearest to real colors?
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15th July 2020, 13:22 | #27 | Link | |
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Last edited by VictorLS; 15th July 2020 at 13:37. |
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16th July 2020, 21:40 | #28 | Link |
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For devices not supported 4:2:2 to compare HLG and SDR I've downloaded and did same fragment 4:2:0 F1.Round.06.Grand.Prix.de.Monaco.2019.Race.HDTV.1080i_.ts (312 MB) https://transfiles.ru/aoxe0
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22nd July 2020, 05:32 | #29 | Link | |
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23rd July 2020, 00:17 | #30 | Link |
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For HLG tests (to achieve ~ right colors while in ordinary DirectShow players like MPC-HC(BE), PotPlayer, KMPlayer etc) I've reuploaded ts files with same piece of F1 race to more permanent place:
1. Original 4K h265 HLG file 20190526-164153_RTL UHD.ts (687 MB) https://yadi.sk/d/6_vZCglWkP1xxw 2. 4:2:2 h264 1920x1080i50 BT.709 file from SAT feed Formula1.2019.Round06.Monaco.Race.Sat.Feed.1080i.H264.Multi.Language_fromMKVtsMuxerNotHDMVcompatible.ts (501 MB) https://yadi.sk/i/X1nPqEAqIAZXoQ 3. 4:2:0 h264 1920x1080i50 BT.709 file from Russian channel F1.Round.06.Grand.Prix.de.Monaco.2019.Race.HDTV.1080iDGSplit.ts (313 MB) https://yadi.sk/d/5NCBNVwWx9rWZQ Last edited by VictorLS; 21st December 2020 at 19:53. |
24th July 2020, 01:06 | #31 | Link | |
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Could the avisynth script DGHDRtoSDR mentionned at the beginning of this thread be used as a reference, on your HLG test files, to determine what the accurate result is ?
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bShaders: realtime Effects/filters for video players |
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24th July 2020, 09:29 | #32 | Link | |
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so answer is only OpenGL gives ~ right colors while playing HLG (D3D9 and others gives wrong colors) on SDR (BT.709) monitor in Win7 and after additional research D3D11&OpenGL in Win8-10 but D3D11 usually gives more fluent video such OpenGL in Win7. Versions of mpv before August 2019 gives such as VLC OpenGL colors while playing HLG files without hardware acceleration too. Last edited by VictorLS; 24th July 2020 at 15:23. |
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26th July 2020, 21:37 | #33 | Link |
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HLG to SDR (video players)
test file: RTL_HLG_2160p.mp4 (top of the thread, RTL title screen)
compared vs RTL_SDR tbc: to be confirmed no correction: POOR (but shaders are supported for correction) - mpc-hc (EVR-CP) - vlc (dx9) HLG auto-correction: GOOD - vlc (dx11, default Output mode > Win8) - vlc (OpenGL for windows), using libplacebo (tbc) - mpv (tbc) it is reported that mpv output can be made more similar to vlc through conf file settings. HDR auto-correction: BAD - mpc-be - Convert HDR to SDR.hlsl
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bShaders: realtime Effects/filters for video players Last edited by butterw2; 28th July 2020 at 13:36. |
26th July 2020, 22:50 | #34 | Link | |
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PS. I've just seen http://forum.doom9.org/showthread.ph...02#post1919502 (great work, but when 20190526-164153_RTL UHD.ts paused in MPC-HC to see effect after turning shader off must be play next frame (i.e. Astra Ultra HD Demo.ts don't need play next frame) - KMPlayer 4.0.7.1 can fully operate with shaders when 20190526-164153_RTL UHD.ts paused) and found where shader in VLC but haven't tried it yet. Last edited by VictorLS; 28th July 2020 at 05:26. |
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27th July 2020, 19:32 | #35 | Link |
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If watch carefully on high-quality monitor (not TN) i.e. red color in VLC (DXVAChecker) D3D11 not really red on my own - with VLC OpenGL much closer to red.
Last edited by VictorLS; 27th July 2020 at 21:00. |
28th July 2020, 12:53 | #36 | Link |
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Good doesn't imply perfect.
Based on this sample (upconverted SDR most likely), my main takeaway is that the HLG backwards compatibility on SDR (HDTVs) is quite underwhelming. However some processing as performed in vlc might improve on this result. A purist however might say that HDR can only be properly displayed on a HDR screen. I tried out an encoder gui to see what the out of the box tonemapping experience might be like: -HLG x265 pass-through: worked OK. -HLG to SDR performed in avisynth with HDRTools: better than nothing, but still not GOOD. Moreover, implementing the required processing is likely more difficult in a video player vs avisynth because you have to deal with DirectShow, the GPU SW/HW and realtime processing constraints.
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bShaders: realtime Effects/filters for video players |
31st July 2020, 15:37 | #37 | Link | ||
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Hi there. Someone brought this thread to my attention after demo'ing some work I did on a HDR10 to HLG converter.
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HDR is a complete and total mess, if I may be frank. But HLG is much better about SDR as long as the HLG picture is balanced correctly, meaning that reference white is calibrated to 75% input signal strength. Again, a purist is going to say that HLG should always be shown on a 2020-capable device. |
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31st July 2020, 16:52 | #38 | Link | |||
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Some more exact in case of HLG ARIB STD-B67 instead of yours 2020 on my own. You can download libplacebo from VLC and three sample videos from my posts above. Quote:
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1st August 2020, 13:09 | #39 | Link |
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From wswartzendruber's post I've known Kodi is next (after mpv and VLC) player with well HLGtoSDR tonemapping (I tried and confirm that HLG 20190526-164153_RTL UHD.ts (687 MB) https://yadi.sk/d/6_vZCglWkP1xxw is played in Kodi with ~ right colors) but we need HLGtoSDR shader
Last edited by VictorLS; 1st August 2020 at 13:11. |
26th September 2020, 23:41 | #40 | Link |
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Free-To-Air channel RTL UHD Austria provider ORS begins from 19e2 11214h22000 - it's some strange (same German RTL UHD now too): while adv and studio it's ordinary HLG but when F1 from our Russian Sochi colors are good on SDR monitor without any processing like shader, modern MPC-BE, VLC, mpv or Kodi. Here's sample 20200926-153844_RTL UHD Austria.ts (232 MB) https://yadi.sk/d/_4Oo1_awZEQr4g
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