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Planinar
Participating Frequently
January 16, 2025
Answered

LUTs not Loading

  • January 16, 2025
  • 2 replies
  • 1849 views

Hi,

 

I reinstalled the OS on my PC and my LUTs no longer load when I launch Premiere. I followed @Kevin-Monahan and @R Neil Haugen's advice here, and that worked great until I reinstalled the OS. Is anyone having the same issue? My current version of Premiere is 25.1.0.

 

Thanks!

Correct answer R Neil Haugen

Oh hoo boy ...  perhaps an improper data range levels also. Sheesh.

 

Understand, I work for/with/teach pro colorists, and am around intensely, highly detailed discussions on color depth/volume/space/math/handling/hardware constantly. Where going way down the rabbit hole is necessary to get full understanding of what happens under the hood.

 

YUV Rec.709 media ... technically Y/Cb-Cr ... is by the standards supposed to be encoded in Limited/Data range. Only 12 bit RGB Rec.709 ... made by very few cameras ... is supposed to be encoded as full range.

 

Whether it is encoded as full or limited, the same number of 'levels' is recorded to the file, they are simply encoded differently. And monitors are set to automatically handle the display correctly showing both 0-255. IF you don't muck up the GPU or monitor settings.

 

That is very confusing and is a major issue for quite a few folks who's cameras allow setting YUV media to 'full'. WRONG. You don't get anything more into the file, you do run into problems in editing and playback.

 

I've had to help several people, across both Premiere and Resolve, sort things out so with the files they've already produced they could get predictable behavior in exports that worked normally. And for some, who shot their own clips, chose to set the camera correctly to limited to avoid problems.

 

But others got this from the client or the shooter the client hired and just needed to know how to fix it so it worked right. There are Lumetri presets in the Presets bin for full->limited conversion. That fixes it for working within Premiere, and the export will be properly limited range.

 

So you stepped into a hot-button for me there ... sorry, but it's something that is a pain in the patootie.

 

I'll try to download that LUT today and see if Premiere sees it on my system. Not all LUTs are the same, by the way. Some LUTs have different structures to them. And can be used with X an Y software but not with Z or Q. Driving colorists nuts, of course. One of many reasons to get away from LUT-based workflows, and to using the safer algorithmic processes now in both Premiere and Resolve. Although neither supports all cameras for algo conversions. Sadly.

 

Some of the Resolve LUTs cannot be seen or used by Premiere, for instance. I've been able to take them into LutCalc, and re-export them to a more standard cube at need. So far.

 


I downloaded the whole group of folders from your Canon link, put several from each 1D and 3D sets, in:

 

Program Files/Adobe/Common/Luts/Creative

 

And I was able to access and apply all of the seven or so from the Creative tab dropdown slot.

 

Puzzling, why doesn't that work on your end? Huh.

2 replies

MyerPj
Community Expert
Community Expert
January 18, 2025

I downloaded them also, and put them in:

%UserProfile%\AppData\Roaming\Adobe\Common\LUTs\Creative

And they worked fine in both PP and AE. (Thus to note my strong aversion to putting things in "c:\Program Files")

 

All I did was drop them into that folder from your zip.

Planinar
PlaninarAuthor
Participating Frequently
January 18, 2025

That worked for me until I had the OS reinstalled on my Windows work machine the other day, and it still works on my personal Mac. Upon the reinastallation, it wouldn't work until I dropped it into "Program Files".

MyerPj
Community Expert
Community Expert
January 20, 2025

The folderi itself is hidden by default, while the files residing within it aren't. Not sure how and if that affects it, but it wasn't an issue until recently. And I too have a shortcut on my desktop 😉


Well, glad it's working now, and Adobe has said in the past it's ok to use Program Files, so, we'll just leave it as it is for you. Glad also to have you here, stick around, I'm sure you can contribute to others and learn stuff as we all do from this forum. Cheers! 🙂

R Neil Haugen
Legend
January 16, 2025

A screengrab of your Finder showing the full drive listing would be helpful ... so we see the entire drive/folder/folder list down to the files themselves. Sometimes it's easy to miss something..

Everyone's mileage always varies ...
Planinar
PlaninarAuthor
Participating Frequently
January 16, 2025

Here it is. I hope I missed something. If I did, it'll be time to see a doctor of some sort ;-).

 

Thank you!

R Neil Haugen
Legend
January 16, 2025

Looks normal. Could you share a LUT and see if it's seen and loaded on my system?

Everyone's mileage always varies ...