16:9 aspect ratio

16:91.78:1widescreen16:9 widescreen16x91.85:1 aspect ratio1.77:11.78:1 aspect ratioaspect ratio of 16:91.33:1
16:9 (1.7:1 = 4 2 3 2 ) is an aspect ratio with a width of 16 units and height of 9.wikipedia
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Aspect ratio (image)

4:3aspect ratio16:9
16:9 (1.7:1 = 4 2 3 2 ) is an aspect ratio with a width of 16 units and height of 9.
For example, in a group of images that all have an aspect ratio of 16:9, one image might be 16 inches wide and 9 inches high, another 16 centimeters wide and 9 centimeters high, and a third might be 8 yards wide and 4.5 yards high.

14:9 aspect ratio

14:914:9 format14:9 widescreen
Applying the same geometric mean technique to 16:9 and 4:3 yields the 14:9 aspect ratio, which is likewise used as a compromise between these ratios.
It is used to create an acceptable picture on both 4:3 and 16:9 televisions, conceived following audience tests conducted by the BBC.

21:9 aspect ratio

21:921.3 :96427
The value found by Powers is exactly the geometric mean of the extreme aspect ratios, 4:3 (1.3:1) and 2.35:1 (or 64:27, see also 21:9 aspect ratio for more information), √ 47⁄15 ≈ 1.770 which is coincidentally close to 16:9 (1.7:1).
The main benefit of this screen aspect ratio, compared to the more common 16:9, is the absence of the black bars at the top and bottom of the screen when viewing content in this format, and a constant display height when displaying other content with a lesser aspect ratio.

PALplus

PAL+ formatPAL-plus
Some countries adopted the format for analog television, first by using the PALplus standard (now obsolete) and then by simply using WSS signals on normal PAL broadcasts.
It had the same number of lines as PAL, but like HD-MAC it was designed for widescreen content.

Cartoon Network (Central and Eastern Europe)

Cartoon NetworkCartoon Network CEECartoon Network (CEE)
In 15 October 2018, Cartoon Network changed its aspect ratio from 4:3 to 16:9.

Computer monitor

monitorcomputer displaymonitors
Since 2009, it has become the most common aspect ratio for televisions and computer monitors and is also the international standard format of HDTV, Full HD, non-HD digital television and analog widescreen television.
Between 2003 and 2006, monitors with 16:9 and mostly 16:10 (8:5) aspect ratios became commonly available, first in laptops and later also in standalone monitors.

High-definition television

HDTVhigh definitionHD
Since 2009, it has become the most common aspect ratio for televisions and computer monitors and is also the international standard format of HDTV, Full HD, non-HD digital television and analog widescreen television.
Initially the existing 5:3 aspect ratio had been the main candidate but, due to the influence of widescreen cinema, the aspect ratio 16:9 (1.78) eventually emerged as being a reasonable compromise between 5:3 (1.67) and the common 1.85 widescreen cinema format.

Digital television

digitaldigital TVDTV
Since 2009, it has become the most common aspect ratio for televisions and computer monitors and is also the international standard format of HDTV, Full HD, non-HD digital television and analog widescreen television.
Each of these uses a 16:9 aspect ratio.

Anamorphic format

anamorphicanamorphic lens2.39:1
The popular choices in 1980 were: 1.3:1 (based on television standard's ratio at the time), 1.6:1 (the European "flat" ratio), 1.85:1 (the American "flat" ratio), 2.20:1 (the ratio of 70 mm films and Panavision) and 2.35:1 (the CinemaScope ratio for anamorphic widescreen films).

Widescreen signaling

hidden signalingsignalwidescreen signalling
Some countries adopted the format for analog television, first by using the PALplus standard (now obsolete) and then by simply using WSS signals on normal PAL broadcasts.

Television

TVtelevisedtelevisions
Since 2009, it has become the most common aspect ratio for televisions and computer monitors and is also the international standard format of HDTV, Full HD, non-HD digital television and analog widescreen television.
However, in other parts of the world that used the PAL or SECAM color systems, standard-definition television is now usually shown with a 16:9 aspect ratio, with the transition occurring between the mid-1990s and mid-2000s.

TVRi

Shoot and protect

Most 4:3 (1.3:1) and 2.39:1 video is now recorded using a "shoot and protect" technique that keeps the main action within a 16:9 (1.7:1) inner rectangle to facilitate HD broadcast.
A 14:9 safe area is often chosen as a compromise between 4:3 and 16:9 frame formats.

Graphics display resolution

QVGAWVGAqHD
QWXGA (Quad Wide Extended Graphics Array) is a display resolution of pixels with a 16:9 aspect ratio.