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Many types of artificial lighting flicker at twice the rate of the power source. This is most pronounced with fluorescent lighting, but also happens to a lesser extent with incandescent. Common power sources are 50 Hz (in Europe and most of Asia) and 60 Hz (in North America), which cause 100 and 120 pulses of light each second, respectively. Other than ...


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To replace a white background with an image, you need to use a Luma Key. A Luma Key is like a Chroma Key, except that instead of using a color value (such as green or blue, usually qualified also by a certain level of luma), you will use only a luma value (such as anything brighter than 200 IRE). Most NLE software have both compositing and keying ...



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