Search found 20 matches

by Dion
Sat Oct 20, 2018 9:20 pm
Forum: CUDA Filters
Topic: HDR -> SDR conversion
Replies: 511
Views: 22332

Re: HDR -> SDR conversion

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 rememb...
by Dion
Sat Oct 20, 2018 5:41 pm
Forum: CUDA Filters
Topic: HDR -> SDR conversion
Replies: 511
Views: 22332

Re: HDR -> SDR conversion

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.
by Dion
Thu Sep 27, 2018 3:19 pm
Forum: CUDA Filters
Topic: HDR -> SDR conversion
Replies: 511
Views: 22332

Re: HDR -> SDR conversion

Stark image is from the 1080p bluray.. Not the UHD..

UHD and 1080p BD's do not have the same color.

and on top of that you have never seen a UHD in it's native form.. So you have no idea what Tonemapping is correct. The quest for a perfect SDR tonemap is impossible right now.
by Dion
Thu Sep 13, 2018 1:00 am
Forum: CUDA Filters
Topic: HDR -> SDR conversion
Replies: 511
Views: 22332

Re: HDR -> SDR conversion

Have you ever considered making an HDR to SDR app for the Nvidia Shield? It has an Nvidia GPU in it and one thing it lacks is an HDR to SDR app that can hook onto Plex or Kodi or some other popular video apps.

Could even charge for it an probably make some decent bank. :D
by Dion
Sun Sep 02, 2018 3:47 pm
Forum: General Discussion
Topic: fulldepth=True
Replies: 6
Views: 489

Re: fulldepth=True

Hi Is is means DGSource won't "upscale" bitdepth from 8bit to 16bit if i'm using 8bit source Some of our encoder want to handle banding and some other fixes in 16bit before outputting a 8bit video. If DGSource won't "upscale" the source then I may need to process it with extra filter or something s...
by Dion
Wed Jul 25, 2018 1:02 pm
Forum: CUDA Filters
Topic: HDR -> SDR conversion
Replies: 511
Views: 22332

Re: HDR -> SDR conversion

Thanks.. Looks to be working.. :salute:
by Dion
Wed Jul 25, 2018 1:29 am
Forum: CUDA Filters
Topic: HDR -> SDR conversion
Replies: 511
Views: 22332

Re: HDR -> SDR conversion

https://www.dropbox.com/s/qiwo2v5j6b9c9j1/Annihilation-002.mkv?dl=1 Make sure you have the latest Avisynth+ otherwise 16bit will error out and display nothing.. https://github.com/pinterf/AviSynthPlus/releases/tag/r2728 16 Bit DGSource("Annihilation-002.dgi", fulldepth=True) z_Spline36Resize(1920, 1...
by Dion
Tue Jul 24, 2018 2:48 pm
Forum: CUDA Filters
Topic: HDR -> SDR conversion
Replies: 511
Views: 22332

Re: HDR -> SDR conversion

Thought it was common knowledge that banding is caused by the down conversion from a higher bit master to 8bit? But anyways.. Here is an example of 8bit vs 16bit vs DGHDRtoSDR. I could not use DGHDRtoSDR in this test for 16bit cause I am sure its going straight to 8bit. That is why I asked if that i...
by Dion
Tue Jul 24, 2018 2:59 am
Forum: CUDA Filters
Topic: HDR -> SDR conversion
Replies: 511
Views: 22332

Re: HDR -> SDR conversion

I was under the impression that the DGHDRtoSDR plugin automatically converted everything to 8bit. Is this not true?
by Dion
Mon Jul 23, 2018 5:06 pm
Forum: CUDA Filters
Topic: HDR -> SDR conversion
Replies: 511
Views: 22332

Re: HDR -> SDR conversion

admin wrote:
Mon Jul 23, 2018 3:46 pm
Again, what is the use case? And how would you do things if this change did not exist?
Down converting to 8bit causes banding. You can't just up convert back to 10/16 and its fixed.. the data is lost. A plugin would be required to fix the banding.

Can't encode in 10bit basically. Properly.