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The pillarbox effect occurs in widescreen video displays when black bars (mattes or masking) are placed on the sides of the image. It becomes necessary when film or video that was not originally designed for widescreen is shown on a widescreen display, or a narrower widescreen image is displayed within a wider aspect ratio , such as a 16:9 ...
Sometimes a shadow can be used to create a visual effect. Areas of the blue screen or green screen with a shadow on them can be replaced with a darker version of the desired background video image, making it look like the person is casting a shadow on them. Any spill of the chroma key colour will make the result look unnatural.
Noise, static or snow screen captured from a VHS tape. Noise, commonly known as static, white noise, static noise, or snow, in analog video, CRTs and television, is a random dot pixel pattern of static displayed when no transmission signal is obtained by the antenna receiver of television sets and other display devices.
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Window-boxing occurs when an image appears centered in a television screen, with blank space on all four sides of the image, [9] [10] such as when a widescreen image that has been previously letter-boxed to fit 1.33:1 is then pillar-boxed to fit 1.78:1. It is also called "matchbox", "gutter box", and "postage stamp" display.
Administrators: Please do not delete this category as empty! This category may be empty occasionally or even most of the time. Wikimedia Commons has media related to Images with opaque backgrounds .
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One color entry in a single GIF or PNG image's palette can be defined as "transparent" rather than an actual color. This means that when the decoder encounters a pixel with this value, it is rendered in the background color of the part of the screen where the image is placed, also if this varies pixel-by-pixel as in the case of a background image.
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