I have been tinkering with #AnimateDiff trying to get away from 32-frame movie to unlimited movie length using just home computer GPU.
It's doable. But getting transitions smooth between different shots is tough. But at least it's possible to retain the overall "concept" during the whole movie.
Below example is with stock #StableDiffusion 1.5 & motion module (no LoRA, no fine-tune) with just a static text prompt.

