I was in the mall just a few minutes ago, and while I was waiting for a coffee I was standing next to one of those movie-poster billboard things that have TV in

I was in the mall just a few minutes ago, and while I was waiting for a coffee I was standing next to one of those movie-poster billboard things that have TV in them. Every few seconds a poster for a movie, or cleaning product, or some store would pop up, each had some subtle animation. They were really high res, 4k perhaps. Really nice and crisp. Anyhow, I was thinking how great the images on them were.