Question: what are the types of video quality?
Answer: There are two types of video resolution: Standard Definition (SD) and High Definition (HD). The most popular standard resolutions are 640×360 and 640×480 for video, and 720×480 and 720×576 for DVD. HD video usually has a resolution of 1280×720 (720p) or 1920×1080 (1080p, is also known as Full HD).