What it does: there’s a reference image/video, from where the colours are taken. In the destination image/video, the color grading is done exactly as seen from the pixels of the source video.
Yes
In your favorite general image manipulation program export the LUT (color Look-Up Table) of an image or between 2 frames as a .cube,
then in Shotcut > Filters > LUT (3D) > select the .cube… You get the color of the image in your clip!
Adjusting the intensity
To safely dial back a LUT’s intensity inside a single clip, if the LUT is too strong, Shotcut requires a specific filter “sandwich” technique. The order of your filter stack must look exactly like this:
Method 1 (filters and mask)
Mask: Simple Shape (Set its Width and Height to 100% of the clip width-height(1920*1080?) so it covers the whole frame).
Opacity (This is the slider you move to control the LUT intensity → e.g., 70% opacity means 70% LUT strength).
LUT 3D (Your imported .cube file).
Mask: Apply.
Now adjusting “Opacity” will apply to the LUT only.
Method 2 (no masking):
If managing four filters feels tedious, you can use the track blending method:
Duplicate your clip onto a track directly above the original (V2 above V1).
Apply the LUT 3D filter only to the top clip on V2.
Add a standard Opacity filter to that same top clip.
Lowering the opacity will naturally blend the LUT-graded clip with the untouched original clip underneath it.
Thanks for this. I was trying out the keyframes in the Opacity filter, and I got the answer for Fade Curves too:
The keyframes of Shotcut have a lot of options after right-clicking. In total, there are a total of 13 options (including all the Ease ones). Which means one can have 169 (13 x 13) fade types for two clip transitions. That’s a lot more than Vegas