alt Hacker NewsAI video generation can fairly easily choke anything that's not NVIDIA's flagship model. Even the latest local image gen models are so large that they can be frustratingly slow with non-optimal hardware even if they fit in the VRAM. IIRC when I had an M2, it was about 4x slower at running the venerable Stable Diffusion (and SDXL) than my meager RTX 3060.
I do not do anything with AI Video, but I imagine running this locally would be a hog on a Mac - especially if not optimised for Metal.