Here the sample files set
https://triaxes.com/downloads/Samples...
Initially, 3DMasterKit is designed to create lenticular images.
However, you can also make a slit animation.
Consider this example. Let's create five images with colored numbers. Let's save them to files. We will run 3DMasterKit and add frames to the project, perform interlacing with parameters 600 PPI and 20 LPI. Save the result to .TIF file.
Then we need to create a slit mask. To do this, we will create a black image and a transparent one. Let's save both images in the same RGBA color model to a PNG or TIF file.
Let's create a sequence of frames from 4 black frames and one transparent frame. Let's perform interlacing with the same parameters 600 PPI and 20 LPI. Save it to a TIF file.
Now, if you print the interlaced numbers on paper, and the mask on a transparent film, then shifting the mask relative to the paper, you can see the slit animation.
To check the effect, I'll use a graphic editor and just shift the layers relative to each other. That's how it happened.
Music: Milonga Tristonga by Anna Sutyagina