In the DCI cinema standards, the resolution is actually 4,096x2,160, but you won't find many displays with that resolution. Like 1440p, this is the resolution of a 4K monitor with a 16:9 aspect ratio.

For 1080p streaming, 5Mbps is the minimum, and 10Mbps should be comfortable regardless of sound or video quality. 4K requires ...

YouTube appears to be rolling out support for 4K playback on mobile devices that have lower resolutions. It's a welcome change for pixel-peepers.

Right now, you can choose a resolution of up to 4K even if your phone does not have a 4K display. Here’s how to do it. Time needed: 2 minutes. Choosing a 4K resolution Open the YouTube app.

YouTube appears to be running a test on some of its users that removes the 4K video resolution option as a free offering and instead makes it a feature you have to pay for.

That will be $11.99 a month if you want to access videos in the highest resolution. Google's recently killed game-streaming service, Stadia, had a similar billing setup, where 4K was a premium add-on.

For the most part, 4K resolution — we’re talking 2160p — is pretty hard to come by. FuboTV has had some in the past, and YouTube TV has joined the 4K party via its optional 4K Plus add-on.

Video at 4K clocks in at a 3840 x 2160 resolution, while Apple's largest iPhone 11 Pro smartphone has a 2436 x 1125 resolution and the 12.9-inch iPad Pro has a 2732 x 2048 resolution.

A 4K display may require more power than a 1440p display of the same size. A computer will have to work harder to produce 4K output than 1440p because 4K needs more than twice as many pixels rendered.