"The Irishman" producer Gastón Pavlovich gave Cinemablend in 2017 a glimpse of how extensive Industrial Light & Magic may go with the de-aging.
"We were able to film Bob and just do a scene, and we saw it come down to when he was like 20, 40, 60, so we're looking forward to that," he said. "Imagine seeing what De Niro looked like in 'The Godfather 2' days, that's pretty much how you're going to see him again."
De Niro was in his late 20s when he played young Vito Corleone in the flashbacks scenes of "Godfather II."