HDR -> SDR conversion

These CUDA filters are packaged into DGDecodeNV, which is part of DGDecNV.
dennis
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Re: HDR -> SDR conversion

Post by dennis » Wed Oct 17, 2018 1:43 pm

@admin
HDR2SDR I don't know that plugin.
Sorry, I meant DGHDRtoSDR.dll v.DGHDRtoSDR_1.10.rar
As to
@dennis
Are you going to ignore my request for your source file, etc.?
I'm missing something.
Nevertheless, my source is Gladiator 2000 Extended 2160p UHD BluRay REMUX HDR HEVC DTS-X-EPSiLON.
Do you want a 10/20 sec cut from it or what?

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admin
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Re: HDR -> SDR conversion

Post by admin » Wed Oct 17, 2018 1:59 pm

Please give me the cut that you made, you know, the one you say has 240 frames but for which DGSource() says 236.

You say DGHDRtoSDR is not working properly, so please give me the source file (if different from the one above), and the exact Avisynth script that you used. I expect the issue is related to your other tools and process, as DGHDRtoSDR cannot create non-existing frames. It simply returns frames requested by the application that is processing the Avisynth script.

dennis
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Re: HDR -> SDR conversion

Post by dennis » Wed Oct 17, 2018 3:45 pm

As to the
DGHDRtoSDR plugin doesn't work properly
I found some ambiguities, at least for me and I had a successful run with this plugin.
Here is a brief summary from the run.

Code: Select all

>avs2yuv64 -depth 10 -raw DGHDRtoSDR.avs - | x265-64bit-8bit-2018-10-08 - --input-depth 8 --input-res 1920x1080 --input-csp "i420" ... color1.hevc
yuv  [info]: 1920x1080 fps 24000/1001 i420p8 unknown frame count
raw  [info]: output file: color1.hevc
x265 [info]: HEVC encoder version 2.8+74-fd517ae68f93
...
x265 [info]: tools: deblock sao
avisynth 16-bit hack enabled
DGHDRtoSDR.avs: 960x1080, YV12, 10-bits, progressive, 24000/1001 fps, 236 frames
x265 [info]:...
...
encoded 236 frames in 287.14s (0.82 fps), 57349.70 kb/s, Avg QP:16.25

Code: Select all

DGHDRtoSDR.avs
loadplugin("C:\Programs\AviSynth+\plugins64+\dgdecodenv.dll")
loadplugin("C:\Programs\AviSynth+\plugins64+\dghdrtosdr.dll")
DGSource("F:\Gladiator.copy\Gladiator10sec.dgi",fulldepth=true)
DGHDRtoSDR()
ConvertBits(8)
Spline36Resize(1920,1080)
prefetch(6)
Here is a link to Google drive where I've uploaded my test source - Gladiator10sec.hevc
https://drive.google.com/drive/folders/ ... p=sharing
Didn't see download option though. Maybe, it is a default.

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admin
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Re: HDR -> SDR conversion

Post by admin » Wed Oct 17, 2018 4:13 pm

Thank you for the source file. The index file sees 238 frame starts but playing the script in Vdub2 delivers only 237 (0-236). That is likely due to the way you have cut the file, i.e., not a clean cut at the end. So I don't see any problem. I won't speculate on what your avs2yuv64 and 16-bit hack stuff may be doing, and I do not provide support for them.

You haven't shown any issue with DGHDRtoSDR. Your ConvertBits(8) call is not needed as DGHDRtoSDR delivers 8-bit by default. Also, if you resize in DGSource() it will run much faster. Or resize your way but before the DGHDRtoSDR call.

Bottom line: no problems found.

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hydra3333
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Re: HDR -> SDR conversion

Post by hydra3333 » Thu Oct 18, 2018 12:59 am

hydra3333 wrote:
Fri Oct 05, 2018 7:38 pm
Just a note about the .rar file not opening in 7zip commandline,

Per http://forum.???.org/showthread.php?p=1 ... ost1853939 when I try to manually use standalone z7ip to even list the rar file, it fails.

Would it be possible to consider using .zip or something ?
admin wrote:
Fri Oct 05, 2018 8:30 pm
I'll look into it tomorrow. Thanks for pointing it out. I used to always use ZIP but then I saw lots of people using RAR.
Hello again.
Per this issue with vsrepo crashing https://github.com/vapoursynth/vsrepo/i ... -430883357 when looking for DGHDRtoSDR
  • would it be possible to consider using .zip or something ? :)
  • would it be possible to keep older versions of stuff online for a month or so to provide buffer time for vsrepo to catch up (I haven't looked into vsrepo's mechanism for keeping up to date with new versions, will do so shortly).
  • If a product is non-licensed, maybe could github and tagged releases be a possible alternative, since vsrepo seems to use those OK ?

dennis
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Re: HDR -> SDR conversion

Post by dennis » Thu Oct 18, 2018 2:43 am

admin wrote:
Wed Oct 17, 2018 4:13 pm
Thank you for the source file. The index file sees 238 frame starts but playing the script in Vdub2 delivers only 237 (0-236). That is likely due to the way you have cut the file, i.e., not a clean cut at the end. So I don't see any problem. I won't speculate on what your avs2yuv64 and 16-bit hack stuff may be doing, and I do not provide support for them.

You haven't shown any issue with DGHDRtoSDR. Your ConvertBits(8) call is not needed as DGHDRtoSDR delivers 8-bit by default. Also, if you resize in DGSource() it will run much faster. Or resize your way but before the DGHDRtoSDR call.

Bottom line: no problems found.
Thank you very much for your help.
I would like to point out the John Hable's post at http://filmicworlds.com/blog/filmic-ton ... er-curves/.
His approach is to give more and easy control over the Filmic Tonemapping curves.
He says:
There are several specific issues I’m hoping to address from the Uncharted 2 curve:
(implemented in Hable tonemap operator)
Simple intuitive controls:
Direct control over dynamic range:
Well behaved curves:
Controls in engine:
Fast, closed form: The curve should be simple and fast to evaluate.
Lerpable parameters:Simple inverse:
Convolve with output gamma:
Code on Github: Makes integration simple.

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admin
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Re: HDR -> SDR conversion

Post by admin » Thu Oct 18, 2018 9:37 am

Anyone working on HDR to SDR already is familiar with the Hable stuff. It's all subjective, and personally I have no interest in a "filmic look" or "crisper blacks".

Dion
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Re: HDR -> SDR conversion

Post by Dion » Sat Oct 20, 2018 5:41 pm

Question about this new setting..
hue=10.0 Hue adjustment used to correct hue shift due to the gamut mapping.
Values above 0.0 shift toward red. Values below 0.0 shift toward green. The
default value is 10.0.
Shouldn't it default to 0? Just wondering this change is all.

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admin
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Re: HDR -> SDR conversion

Post by admin » Sat Oct 20, 2018 7:22 pm

The gamut mapping was creating a small noticable green bias for some streams; the default hue setting corrects for that. You can set it to 0 if you prefer.

Dion
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Re: HDR -> SDR conversion

Post by Dion » Sat Oct 20, 2018 9:20 pm

admin wrote:
Sat Oct 20, 2018 7:22 pm
The gamut mapping was creating a small noticable green bias for some streams; the default hue setting corrects for that. You can set it to 0 if you prefer.
Alright. Yes I do prefer zero.

Seems like the versions before 1.11 has "0" as the default even tho there is no hue option.. Just have to remember to add the hue line to scripts now. :D

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