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In seeking the very highest performance for 2K / HD , the three full bandwidth RGB 4:4:4 componen ts are recorded at 12 -bit or 10 -bit at the v ery high data rates shown in Ta ble 4 . Variable Bit Rate ( VB R) is deployed in this mode because it more f lexibly and accurately encode s the video data , with fewer bits ass igned to less demanding segments of an image frame and more bits used in difficult -to-encode segments. The file wrapper is MXF.
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