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computer monitor A computer monitor is an output device that displays information in pictorial or textual form. A discrete monitor comprises a visual display, support electronics, power supply, housing, electrical connectors, and external user controls. The ...
screen resolutions that are defined by standards or in common use. Most of them use certain
preferred numbers In industrial design, preferred numbers (also called preferred values or preferred series) are standard guidelines for choosing exact product dimensions within a given set of constraints. Product developers must choose numerous lengths, distan ...
.


Computer graphics

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Pixel aspect ratio Pixel aspect ratio (often abbreviated PAR) is a mathematical ratio that describes how the width of a pixel in a digital image compares to the height of that pixel. Most digital imaging systems display an image as a grid of tiny, square pix ...
(PAR): The horizontal to vertical ratio of each pixel. ;
Storage aspect ratio The aspect ratio of an image is the ratio of its width to its height, and is expressed with two numbers separated by a colon, such as ''16:9'', sixteen-to-nine. For the ''x'':''y'' aspect ratio, the image is ''x'' units wide and ''y'' units high ...
(SAR): The horizontal to vertical ratio of solely the number of pixels in each direction.LCD panels' resolutions are often quoted in terms of raw subpixels, misnamed "pixels" in manufacturer's specifications. Each real pixel includes one subpixel for each of three colors, so calling subpixels "pixels" inflates the claimed resolution by a factor of three. This bit of marketing obfuscation is calculated as horizontal resolution × vertical resolution × 3. For example: 640 × 480 VGA is subpixels, or pixels, 800 × 600 SVGA is subpixels, or pixels, and 1024 × 768 XGA is subpixels, but only full-color pixels. ;
Display aspect ratio The aspect ratio of a display device is the proportional relationship between the width and the height of the display. It is expressed as two numbers separated by a colon (''x'':''y''), where ''x'' corresponds to the width and ''y'' to the height ...
(DAR): The combination (which occurs by multiplication) of both the pixel aspect ratio and storage aspect ratio giving the aspect ratio as experienced by the viewer.


Television and Media

For television, the display aspect ratio (DAR) is shown, not the storage aspect ratio (SAR); analog television does not have well-defined pixels, while several digital television standards have non-square pixels.


Analog Systems


Digital Standards

Many of these resolutions are also used for video files that are not broadcast. These may also use other aspect ratios by cropping otherwise black bars at the top and bottom which result from cinema aspect ratios greater than , such as 1.85 or 2.35 through 2.40 (dubbed "Cinemascope", "" etc.), while the standard horizontal resolution, e.g. 1920 pixels, is usually kept. The vertical resolution is usually a multiple of 8 or 16 pixels due to most video codecs processing pixels on such sized blocks. A widescreen FHD video can be for a ratio or for roughly , for instance.


Films

The below distinguish SAR (aspect ratio of pixel dimensions), DAR (aspect ratio of displayed image dimensions), and the corresponding PAR (aspect ratio of individual pixels), though it currently contains some errors (inconsistencies), as flagged.


Video conferencing


Notes


References


Further reading

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External links


Interactive Visualization : Screen Resolutions

Resolutions for Common Aspect Ratios
{{DEFAULTSORT:Common Resolutions Resolutions Display resolutions