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Wire removal can be partly automated through various forms of keying, or each frame can be edited manually. First, the live action plates of actors or models suspended on wires are filmed in front of a green screen. Editors can then erase the wires frame by frame, without worrying about erasing the backdrop, which will be added later. This can be accomplished automatically with a computer. If the sequence is not filmed in front of a green-screen, or with a green wire a digital editor must hand-paint the lines out. This can be an arduous task.
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