4K Ultra HD digital movie refers to a digital movie with a resolution of 4096×2 160, that is, there are 4,000 pixels horizontally, which is the highest resolution digital movie at present. At present, most digital movies in China are 2K with a resolution of 2048× 1080, and some digital movies are1.3k (1280×1024), while the so-called rural movies are shown at 0.8k (1024).