: Why is 4K footage of a game bigger than the game itself?

Question

For example, The Last Of Us Part II is near 100 GB, but if I record the whole game (20 hours or so) in 4K, that video will be like 200-250 GB.

Can anyone explain why?

In: Technology

Answer 1

*Textures* make up most of the data in a game. These are the bitmap images that get painted onto the game’s 3D models. Now imagine a very simple game that consists of nothing but doors and brick walls — always the same doors and always the same bricks. But the doors and walls can be rendered from any angle, and the map can be configured in any number of ways. So in a video-capture of the game, every frame will be unique, even though the game’s internal data is nothing but a single image of a door and a single image of some bricks.