Netflix, a video streaming service, distributes a lot of content that supports 4K resolution, HDR, and Dolby Atmos sound. Therefore, if the monitor or TV you are watching is properly set up, you can ...

Update (Oct 18, 4:38 pm ET): YouTube's testing ends, removing the paywall behind its 4K video quality. YouTube appears to be in the process of delivering a 4K resolution option to Premium members.