Comcast Xfinity 4K Box and 4K UHD Explained

Comcast Xfinity's 4K box is designed to deliver a superior viewing experience with its 4K UHD capabilities.

The box supports 4K resolution at 3840 x 2160 pixels, which is four times the resolution of standard HD.

You'll need a 4K-capable TV to take full advantage of the box's capabilities, and a subscription to Xfinity's 4K channel package.

The box also supports HDR (High Dynamic Range), which enhances the color and contrast of the picture.

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Comcast is finally getting into the 4K game with its own set-top box, the Xi4, which will ship later this year.

Comcast already streams 4K content to Samsung's most recent TVs with its Xfinity in UHD app, but the Xi4 will be the cable company's first 4K box.

The Xi4 is also the latest revision of Comcast's X1 platform, which adds support for high dynamic range (HDR) content.

A model that adds support for HDR will follow sometime in 2016.

Comcast customers will be able to create "unlimited virtual 4K linear channels" by creating personalized playlists from the Xfinity in UHD library.

The movies and shows available on the Xfinity in UHD library include films originally made for IMAX theaters and current shows from USA, Syfy, and Starz.

These movies and shows don't cost anything extra on top of your regular cable package.

Comcast is also planning to deploy a 4K-capable DVR, the Arris-made XG4, which has the same beveled corners as the Arris XG1v4.

The XG4 will be part of the X1 platform and will offer 4K support.

Comcast had initially planned to launch its first 4K set-top box in 2015, but the company decided to slow down its roll on deployments due to the rapid evolution of 4K/UltraHD and High Dynamic Range.

Comcast wants to deploy set-tops that are not only both 4K- and HDR-capable, but also implement the 10-bit High Efficiency Video Coding standard.

However, Comcast is having trouble getting the decoders it needs to integrate 10-bit HEVC into set-tops.

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Comcast is planning to launch the Xi5, a set-top box with HDR support, next year.

The Xi5 will offer increased color, contrast, and brightness for overall better picture quality.

Comcast will add hundreds of titles to the Xfinity in UHD catalog and library, including films originally produced for IMAX and other Giant Screen Theaters.

Here are some of the titles that will be included in the Xfinity in UHD library:

UHD is a standard resolution that offers clear and vivid pictures. Most modern televisions use this type of resolution.

4K UHD has 3840 horizontal pixels and 2160 vertical pixels, which is better than the regular HD resolution that offers 1920 pixels.

Choosing 4K can help you enjoy enhanced brightness levels and greater color depth. Many people choose to watch TV shows in 4K to get a more real-life experience.

The Comcast Xfinity 4K box is a game-changer for anyone looking to upgrade their TV experience. It's scheduled to be released later this year.

Comcast is launching its own 4K set-top box, the Xi4, which will deliver 4K content to customers with live TV and on-demand content. The Xi4 is the latest revision of the X1 platform and will be followed by a model that adds support for high dynamic range (HDR) content sometime in 2016.

You'll be able to create "unlimited virtual 4K linear channels" by creating personalized playlists from the Xfinity in UHD library. This means you'll have access to a wide range of content, including films originally made for IMAX theaters and current shows from USA, Syfy, and Starz.

The Xi4 will also support HDR content, which will increase color, contrast, and brightness for an overall better picture quality. This is a major upgrade from the current X1 box, which only offers 4K content through the Xfinity in UHD app on Samsung TVs.

Comcast is adding hundreds of titles to the Xfinity in UHD catalog and library, including films like The Ultimate Wave Tahiti, Antarctica, Rocky Mountain Express, Fighter Pilot, and Dinosaurs: Giants of Patagonia. You'll also have access to current seasons of hit TV shows like Syfy's Defiance, USA's Suits, and original programming from STARZ.

Here's a breakdown of the key features and availability of the Comcast Xfinity 4K box:

+ 4K content with live TV and on-demand

+ Support for HDR content

+ Unlimited virtual 4K linear channels

+ Personalized playlists from the Xfinity in UHD library

* Availability: Available to Comcast customers with a regular cable package