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Thomas Duvrai

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  1. You are correct, the full frame video files are debayered and downscaled to 14bit YUV422. Usually this format is not called raw, it's an uncompressed intermediate format. How does 14bit YUV422 compare to 14bit Bayer RAW? They are both designed to take less space than pure RGB (which takes at least 24bit per pixel) but they do this by imitating the sensibility of the human eye. Bayer RAW It is the closest to what the sensor records. All commonly used sensors are essentially black and white. Every "pixel" gets a color filter that makes it sensible to only one color. A color sensor usually has a repeating pattern of 2 green, 1 blue and 1 red "pixel": the Bayer pattern. The final RGB pixel you get on your screen is actually an R, G or B pixel, with the rest of the color calculated from neighboring pixels: this is called a debayered image. YUV422 It's an intermediate format because it's always the output of some kind of transformation. No sensor will capture directly in YUV422 format. In YUV422 every pixel has a brightness value, but color information is combined for every 2 pixels.
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