Say you’re a movie studio director making the next big movie with some big name celebs. Filming is in progress, and one of the actor dies in the most on brand way possible. Everyone decides that the film must be finished to honor the actor’s legacy, but how can you film someone who is dead? This technology would enable you to create footage the VFX team can use to lay over top of stand-in actor’s face and provide a better experience for your audience.
I’m sure there are other uses, but this one pops to mind as a very legitimate use case that could’ve benefited from the technology.