What is the Aspect Ratio? (4:3, 16:9, 21:9) - RTINGS.com
https://www.rtings.com/tv/learn/what-is-the-aspect-ratio-4-3-16-9-21-9
WebMay 22, 2019 · 16:9 works great for TVs, since that is the aspect ratio used by the majority of today's TV shows, but unfortunately, most movies are made using the cinema standard, which is 21:9. 21:9 is much wider, so parts of the screen need to be filled with black bars above and below the image in order to fit most TVs.
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