What does HD mean？

HD HD is the Chinese abbreviation of "High Definition" in English, which means "high resolution". It has four meanings: high-definition TV, high-definition device, high-definition format, and high-definition movie. DVD has provided incomparable audio-visual enjoyment in the VCD era, but with the progress of technology and the continuous follow-up of people's needs, people have put forward higher requirements for the quality of video. The format with physical resolution above 720p is usually called HD. In English, High Definition, or HD for short, refers to the physical resolution up to 1920 × 1080 progressive scan, namely 1080p HD, is the top HD specification.