4K movies are the new ultra HD Blu-ray movies with 4K resolution. These movies are the perfect companions for your 4K TVs and PC displays. The normal HD resolution is 1920×1080. 4K has an incredible 4096×2160 pixels. With 4 times as much resolution, it will feel like you are looking through a window rather than watching TV with this pixel density.
4K Blu-ray discs also offer extra features and commentaries like the standard Blu-rays. Another specification of Ultra HD Blu-ray is the boost picture quality to support for up to 60fps frame rate. It's ideal for sporting clips and action movies. 4K Blu-ray movies also have the capability to offer DTS:X and Dolby Atmos audio system depending on the titles and the movie makers.