SGI
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Sgi is a lossless image format. It can be uncompressed or use an RLE variant. The first 16bits of the file format should be the big-endian value 0x01da to be identified as a valid sgi image. It supports the following pixel formats: (ffmpeg notation in brackets) o 8 bit grayscale. (PIX_FMT_GRAY8) o 24 bit, 1 byte for each of R,G, and B. (PIX_FMT_RGB24) o 32 bit, RGB + one byte for the alpha-channel. (PIX_FMT_RGBA)