The reason it looks like many joined clips is because long-form video generation is currently not possible. Most SOTA models only allow generating a few seconds at a time. Past that it becomes much harder for the model to maintain consistency; objects pop in and out of existence, physics errors are more likely, etc.
I think that these are all limitations that can be improved with scale and iterative improvements. Image and video generation models are not affected as much by the problems that plague LLMs, so it should be possible to improve them by brute force alone.
I'm frankly impressed with this short film. They managed to maintain the appearance of characters across scenes, the sound and lip syncing are well done, the music is great. I could see myself enjoying this type of content in a few years, especially if I can generate it myself.
> I’ll just say I don’t think Christopher Nolan has anything to worry about just yet.
The transition will happen gradually. We'll start seeing more and more generated video in mainstream movies, and traditional directors will get more comfortable with using it. I think we'll still need human directors for a long time to come. They will just use their talents in very different ways.