DCTL files don't load

I've copied some DCTL files to my LUT bin.

I've restarted Resolve, and when I try to use the DCTL files, all of them are in the list of DCTL, but no one of them load. I mean that when I slect any of the files, the options are not showing.

Any suggest?.

Thanks in advance.

What is the source of the DCTLs? I mean did they worked before or was this the first time you tried them? If you like, you can share one for testing.

It's the first time I'm trying to use DCTL.

I've downloaded the dctl file from here: https://github.com/npeason/Tetra-DCTLOFX

I've also tried with another public ones which are suposed to work.

It works for me.

What exactly do you do, what do you see? Screenshots help.

Yes, works here as well. In both color and fusion pages. I think I had that one already installed. Bascially you put it where your Lut folder is. I keep mine in DCTL sub-folder. You load up DCTL tool, either in color or fusion page and apply the DCTL from the list of available ones.

sshot-1590.jpg (285.05 KiB) Viewed 2297 times

sshot-1591.jpg (196.02 KiB) Viewed 2297 times

Not at my studio now. I Will post a screenshot, but what happens is that I can select the DCTL, but the options dont appear. The space under the selected DCTL keeps empty

Maybe the lut location folder and place where DCTL is are separate. Check your lut location folder.

sshot-1597.jpg (73.27 KiB) Viewed 2252 times

I didn't have this location on System. I have added it, and the issue remains (even restarting Resolve).

I think it's not a problem of locations, as I can see in the list of "DCTL" all the scripts I have uploaded.

I can see the list

DCTL2.png (521.17 KiB) Viewed 2235 times

When I select any of the DCTL scripts, nothing happens:

I can feel a portion of second delay in Resolve when I select any of the DCTL, so I think Resolve is trying to load it.

In Project settings try changing 3D lookup table interpolation from Tetrahedral to Trilinear and see if that helps.

dctl.png (155.66 KiB) Viewed 2224 times

Try do download it again and place it in right place, here is the path on MAC, not sure where it is on Windows.

path.png (33.35 KiB) Viewed 2224 times

And here is the solution suggested from github:

github.png (64.07 KiB) Viewed 2224 times

In Project settings try changing 3D lookup table interpolation from Tetrahedral to Trilinear and see if that helps.

Mine was set to Trilinear by default and works well, but I didn't think to look there for solution. Although for me it works in both mods.

Trilinear: (Default) Trilinear is backward compatible with grades that use LUTs from previous versions of DaVinci Resolve and matches the look of LUTs being applied in other applications.

Tetrahedral: Tetrahedral is slightly more processor-intensive, but results in higher image quality LUT and DCTL processing, with reduced color-banding. Tetrahedral is recommended for projects that don’t need backward compatibility with previous versions of DaVinci Resolve or LUTs created in other applications.

Thanks so much for your support.

But no one of the suggestion works. I've tried with each one, always reseting Resolve, but the issue is still the same.

Could it be related to some kind of write or read permission on the operating system level? Try to see if you can open security settings for the file itself and see if all the permissions are in place. Do you have any other potential preventor, like anti virus of some kind or something like that?

Also just curious, what is your color management set up for the project? And does it happen on new projects and new timeline as well?

My Color Management setup:

Captura de pantalla 2024-12-25 184359.png (87.91 KiB) Viewed 2200 times

I've tried in a New Project, setting defaults for Color Management, new timeline, and still can't use DCTL.

During my tests, I've also tried to update from 19.1.1 to 19.1.2 Build 3

Nothing works.

Could it be related to some kind of write or read permission on the operating system level? Try to see if you can open security settings for the file itself and see if all the permissions are in place. Do you have any other potential preventor, like anti virus of some kind or something like that?

I've also checjed out that everything is allright with files permisions.

Are you sure you are using the Studio version of Resolve?

Try with this one, it's the same Tetra.dctl file from github

https://drive.google.com/file/d/11JSo87 ... sp=sharing

just put it in the correct path and restart resolve.

I tried to change everything in color management to what you shared in a screenshot, but I can't replicate your problem. Still works. I am puzzled what could be cause of the problem.

I too believe it is related to read / write permissions, but please also try the following.

Open the dctl with a text editor, delete the first empty line and also the space at the end of the first line before the )
Save the dctl and try again.

Maybe your system interprets those as syntax errors for some reason (had something like this before once).

Here is a bunch of DCTL's that are similar in funcions, including Tetra and variations of it. Try them all and see if one of them works. I have a DCTL subfolder in my lut folder where I just copy them.

DCTL.zip

(9.13 KiB) Downloaded 38 times

Yes, is the Studio version for sure.

I'm trying to place every information about LUTs in a new directory.

BINGO!.

I think that the issue is produced for some kind of problems with the OS (Windows 11) system folders translation. I work with Windows 11 - Spanish version. And the way it names the system folders is somehow not clear for me, as I can see, depending of how I search, the spanish name or the english name.

Setting a folder out from the system ones, everything runs perfectly.

Thanks so much for your time.
I hope this can be useful for someone else.

Didn't realized you were on Spanish version of windows, but glad you found the issue, because resolve seems to be working as intended and I was hard to replicate the problem with just resolve.

Didn't realized you were on Spanish version of windows, but glad you found the issue, because resolve seems to be working as intended and I was hard to replicate the problem with just resolve.

Now I remember that I had several months ago a crash issue solved when I stop using Resolve's Spanish Translation. From then, I use the original english version. And it's useful also to talk with you all.

I will consider in the future to pay attention to this.

Thanks again.

Here is a bunch of DCTL's that are similar in funcions, including Tetra and variations of it. Try them all and see if one of them works. I have a DCTL subfolder in my lut folder where I just copy them.

DCTL.zip

With your permission: I will try out your DCTL's

With your permission: I will try out your DCTL's

Off course. I think most of them are from github as well. There are so many good ones on github that one day I just searched for DCTL resolve and list was extensive. So I downloaded many of them to try out, and most are pretty useful or cool effects. Some were specialized for technical conversions that suit some workflows I don't use. some are Creative effects and some are for testing, like color charts and stuff.

Probably the thing I really liked is the sharpening one. This one. comes as a fuse and DCTL.

The following fuse is based on the Contrast Adaptive Sharpening algorithm of the AMD FidelityFX project for developers.CAS adjusts the amount of sharpening per pixel to target an even level of sharpness across the image. Areas of the input image that are already sharp are sharpened less, while areas that lack detail are sharpened more. This allows for higher overall natural visual sharpness with fewer artifacts.

https://gpuopen.com/fidelityfx-cas/

https://www.steakunderwater.com/wesuckl ... php?t=6107

P.S.

If you either use it with nodes or as a fuse, use luminosity blend more after applying it, to only apply sharpening on the luma. This can help avoid unnecessary artifacts.

A nice comment from Liftgammagain Forum about CAS:

https://www.liftgammagain.com/forum/ind ... ost-173179

0. CAS_Sharp should work better in Linear, according to AMD's documentation.
1. CAS_Sharp works better than ordinary sharpening with high-contrast areas - lights, tree branches with sky background, etc. They are not oversharpened and have less haloes.
2. CAS_Sharp does not work as well with small details. It ehnances noise and compression artefacts in the footage very well. Therefore, noise reduction is needed if the footage is noisy.
3. CAS_Sharp is not as "powerful" as ordinary sharpening.
4. CAS_Sharp produces artefacts on the pure black parts of the image. For example, blanking turns white.


CAS_Sharp has three sliders: Contrast, Shift, and Global Blend.

Contrast - increases or decreases amount of contrast between selected areas. Good contrast values - 0.100 to 0.400. Values over 0.800 produce nasty artefacts.

Shift - selects areas to which contrast applies. You can think about them as frequency bands. Shift 1 - smallest details, noise. Shift 10 - biggest details, face features. Good Shift values - 1 to 4. Bigger values tend to produce haloes around high contrast edges.

Global Blend - blends the result with the image. Blend won't fix artefacts of cranked contrast, or haloes at Shift 6 and above. Good Global Blend values - 0.6 for Shift 4, 0.9 for Shift 1.

This look really really great.

Thanks again.

Btw, don't use trilinear, that is legacy that should never be used anymore.

Use tetrahedral...

Btw, don't use trilinear, that is legacy that should never be used anymore.

Use tetrahedral...

Thanks.