There's almost no examples I can think of where this would successfully elicit a positive reaction or experience. It would end up being a net negative to any film and almost any other commercial enterprise.

MAYBE if we had holodeck-tier technology or incredibly life-like androids that could almost 1:1 mimic an actor or character, but that is something that is very very far off in the future. Fake video footage alone just wouldn't be sufficient in my book, no matter how good it is.

Ah, one correction. I did think of a singular example where I could see it working in a commercial enterprise, and is still very much doable now. Voice-overs. Voice-overs such as the ones used in those custom computer voicepack DLC-type dealios in Elite Dangerous. Granted, those ones were actually voiced by the actors (Such as William Shatner and Brent Spiner), but that's one of the few kind of examples where I could see such a thing working for me.

There's almost no examples I can think of where this would successfully elicit a positive reaction or experience. It would end up being a net negative to any film and almost any other commercial enterprise.

MAYBE if we had holodeck-tier technology or incredibly life-like androids that could almost 1:1 mimic an actor or character, but that is something that is very very far off in the future.