A "4K Remaster" refers to the process of enhancing the visual quality of a film or video by converting it to a resolution of 3840 x 2160 pixels, known as 4K. This higher resolution provides more detail and clarity compared to standard definitions, making the viewing experience more immersive. During a 4K remaster, original film elements are often restored and digitally improved. This can include correcting colors, reducing noise, and sharpening images. The goal is to present the content in the best possible quality for modern displays, allowing audiences to enjoy classic films or shows with improved visuals.