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{"cmd": "save", "fmt": "BayerRG12p", "saved": 1, "width": 4024, "height": 3036, "bytes": 18325296, "means": []}
{"cmd": "save", "fmt": "RGB8", "saved": 1, "width": 4024, "height": 3036, "bytes": 36650592, "means": [{"R": 15.77, "G": 16.47, "B": 17.03}]}