Make images "Flow" along a roto spline. Gridwarp and Spline Warp aren't the best for creative flowing effects. This tool allows you to make patterns with extreme warps, by following a roto shape.
Here's the tutorial / video:
https://www.youtube.com/watch?v=y3tFCa0U9Yo
Download includes a zip project demo file with a few stock videos to play with, to see different use-cases.
Download:
https://compacademy.gumroad.com/l/nsxgvo