Welcome to the ZyXEL Networking Glossary - your definitive source for descriptions of networking terms and ZyXEL's product features.
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16:9 aspect ratio
16:9 is the image aspect ratio used in high definition video. 16:9 is wider than the 4:3 aspect ratio used in standard definition video and is also known as “widescreen”. 16 is the width and 9 is the height. It is also written as 1.78:1.