vfx How do I simulate interlace jittering in an mp4?

Hi, my name is Elric Ford.
I'm trying to construct interlace jittering that is described in this video here:
The original reddit thread that named and detailed how to replicate such an effect is shown here:
How do I replicate this CRT Distortion shown in Petscop? : VideoEditing (reddit.com)
However, I'm still excruciatingly confused on how to replicate such an effect. There doesn't seem to be any tutorials everywhere, and the comments made on reddit, while decently helpful, still have me a bit lost.
Any help is much appreciated!