4K HDR video refers to a high-resolution video format that offers four times the pixel count of standard 1080p video. This means it provides sharper and more detailed images, making it ideal for large screens. The "4K" indicates a resolution of 3840 x 2160 pixels, while "HDR" stands for High Dynamic Range, which enhances the contrast and color accuracy, allowing for brighter highlights and deeper shadows. The combination of 4K and HDR results in a more immersive viewing experience, as it captures a wider range of colors and details. This technology is commonly used in streaming services, Blu-ray discs, and gaming consoles, making it increasingly popular among consumers seeking high-quality visual content.