The main difference between the two lies in their ability to display either standard definition (SD) or high definition (HD) digital television feeds. An SD set top box can only access standard definition channels, while an HD set top box can show both standard definition and high definition channels.
Then, is 720p SD or HD?
SD means 'Standard Definition' and refers to 480p. HD means 'High Definition' and refers to 720p and 1080p (1080p is also commonly referred to as Full HD). Then you also have your 2K and 4K, which I will get into later. You have probably also figured out that 1080p is higher quality than 720p.
What does HD and SD mean on Amazon?
Prime Video Quality & Formats (HD, UHD, HDR) Prime Video titles are available in different video formats, including Standard Definition (SD), High Definition (HD), Ultra High Definition (UHD or 4K), and HDR (High Dynamic Range).
What resolution is SD on Netflix?
Netflix streams content to XFINITY X1 in standard (SD), high definition (HD) (720p or better) and Ultra HD 4K (2160p) resolution. One Screen: Includes the ability to play one stream at a time up to the SD resolution (480p max).