De-ageing visual effects have certainly been done before, but never to this scale.
There are hundreds of visual effects shots in “Downsizing, but the film is certainly not a visual effects movie.
More than 15 years ago, Disney tried to make “Gemini Man,” a film in which a real actor interacted with his younger CG self. This is the story of the studio’s ambitious attempt to make a convincing CG human.
Old man yells at computer graphics, vfx supervisor corrects him.