Disney's new blockbuster live-action version of the "Jungle Book" features a young actor, Neel Sethi, among a menagerie of wild animals - except he isn't. I think most of us understand that the talking black panther Bagheera is not a real black panther (it is talking, after all), but entire movie contains very little that is "real" in any sense.
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Neel usually acted on an empty stage, with perhaps a small area of sand, rock, or mud and often only interacting with people holding props to give him something to react to. There were almost no animals present except for a few puppies standing in for wolf cubs (the puppies were later digitally replaced by CG cubs).
Even the jungle itself is computer generated - the trees, the water, the mud, the raging rivers. This scale of illusion requires not only great imagination and talent, it also require a tremendous amount of computing power to actually put those images into a form that we can enjoy.
It can take dozens of hours to render (convert from data bits to something we can see) a single frame of "film" - not counting how much time it takes to create and animate these sorts of movies in the first place.
For the most complicated scenes, the computational power required was astounding.
“It would take 30-40 hours per frame, and since it’s stereo [or 3D], it requires two frames to produce one frame of the movie — at 2K, not even 4K,” Legato said. “So you can tell how much the computer has to figure out, exactly what it’s doing, how it’s bouncing, how much of the light is absorbed, because when it hits an object, some gets absorbed and some gets reflected.”Inverse
The Jungle Book: 20 Things To Know