in engine just means it's in a game engine, not some other pre-rendered software. It also doesn't mean it was running at 30-60fps to create the video. The PS4 doesn't have it's own game engine.
When this says "in engine" it's referring to PS4 own engine? UDK/CryEngine/Unity should be able to archive similar results? https://www.youtube.com/watch?v=2FK8dgzW0o8
Not the same. Game's are software, they require a mixture of intellectual property and interactivity to exists. For software, they require licenses and the means in which to run the said software. Additionally, movies unlike games have both a primary and a secondary market. First they release in theaters, of which you pay…