In this example, 25 frames are generated using Stable Diffusion, then frames are interpolated using FILM-Net. I hadn't see FILM-net before, it looks really neat.
Neat. Didnt Microsoft release a tool that morphed between two photos a decade ago? I dont recall the name unfortunately, but the effect was similar, less quality.
Back in the DOS days I had (and a still do) a copy of a tool called 'Morph', it took two GIF images, and you placed marker points on the first image and then again on the second, and it generated an MPEG2 file of the morphing.
I had the "DMORPH" program, which had you construct a grid, and it would generate separate image for every frame. Then you had to use "DTA" to turn it into a FLIC file. No MPEG here, no animated .gif here, you had FLIC as your animation format.
https://film-net.github.io
https://github.com/google-research/frame-interpolation