Blue/Green Screen
Blue and green screen is a technique for using two images when the one with the blue/green screen is made transparent and changed during the editing process, and put onto another screen which then merges the two images together. They use this when they are doing the weather forecast, as they use either a blue or green screen so then it would go onto the other image, for example if you use a blue screen and the person is wearing blue clothes it would replace the it and it would think it was the background.
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