HD video refers to high-definition video, which offers a clearer and more detailed picture compared to standard definition. It typically has a resolution of 720p (1280x720 pixels) or higher, with 1080p (1920x1080 pixels) being the most common format. This increased resolution allows viewers to see finer details and enjoy a more immersive viewing experience. The technology behind HD video has become widely adopted in various media, including television, streaming services, and Blu-ray discs. As a result, many devices, such as smartphones and televisions, now support HD playback, making it easier for consumers to access high-quality content.