4K video recording refers to a resolution of approximately 3840 x 2160 pixels, which is four times the detail of 1080p video. This higher resolution allows for sharper images and more vibrant colors, making it ideal for capturing high-quality footage in various settings, from home videos to professional films. Many modern devices, including smartphones, cameras, and televisions, support 4K video recording and playback. This technology enhances the viewing experience, especially on larger screens, where the increased pixel density results in clearer and more immersive visuals.