>You need to create an internal 3D model of the objects in the scene, and their relative positions in space across the length of the video. And no one told the

>You need to create an internal 3D model of the objects in the scene, and their relative positions in space across the length of the video. And no one told the model explicitly how to do that, it learned to do it "on its own". Compression is understanding. If you have a model which explains shadows you can compress your video data much better. Since you "understand" how shadows work.