Video generation is AI's current frontier where they are still clearing obstacles to make it feasible to claim the territory as a solved problem.
Still, it's at least possible to render a short, flickering video like the one that I made, which I attached below. Considering how much progress Stable Diffusion has made since its first public release mere 10 months ago, I believe we may also expect a breakthrough in this front in the foreseeable future as well.
The video is loopable, by the way, and contains an audio track I made from free sound samples.