Earlier quoted context omitted.
To add to this - a typical cinema release is a pretty big file - frame-by-frame encoded as jpg2000 in 4k. Often shipped on hard drives, or downloaded via dedicated fiber lines. They key material is distributed separately, and allows for fine-grained control of play back (eg time of day - to the point that if a screening is sufficiently delayed, it may sometimes have to be cancelled if a new key can't be acquired in t…
a typical cinema release is a pretty big file - frame-by-frame encoded as jpg2000 in 4k. Often shipped on hard drives, or downloaded via dedicated fiber lines. This is not a show stopper. All you need is one unlocked copy to drop in the open, and then everyone can work on it, and get it packed up in a more reasonable format. This all works due to proprietary hardware - the modifications to the 4k cinema projectors th…
In a way it's shocking that huge cinema screens ONLY project 4k. When we had film instead of digital projectors, we actually had a much higher resolution on screen. It's a shame we replaced it with an inferior technology.