I attach the essentials and some examples shown in that post in a .toe file.
*(I'm not yet including the network for the AR-filter thing, becaues it's a bit too crude and prototype-ey. I unfortunately cannot aford the time to work on it more at the moment)
Asset
Optical flow warp on video input and Blender scenes
There are variety of effects you can experiment with using optical flow warping, one of them being something like a Stable Diffusion stylization filter. (similar to "Deforum")
I wrote a detailed guide on setting up iterative optical flow warping loops in TouchDesigner, using optical flow data from video or 3D renders.
You can follow along in my blog post HERE
optical flow warp share v1.toe (3.11 MB)