What is HD? HD stands for “high definition”, it means much higher quality video than the old TV system we’ve been using since the 1940s. HD video is richer, clearer, and more life-like than standard TV and even DVDs. It’s a major leap that doesn’t take an expert to appreciate. Is it the same as HDTV? HDTV is one of the first major applications of high definition video. Because HD requires so much