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TV >> HDTV >> HDTV Terminology >> What is aspect ratio?

Question:

What is aspect ratio?

Answer:

Aspect ratio is the width of a picture relative to its height. 4:3 and 16:9 are common aspect ratios. The majority of current NTSC transmissions are 4:3 aspect ratio. Virtually all HDTV transmissions are in 16:9 aspect ratio. Some HDTVs are 4:3 but display 16:9 programming in letterbox format (black borders on top and bottom of screen).

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