Hello, Seems strange, that duotone is interpreted like grayscale (i doesn't test yet your patch)
You can find a sample here (and an rgb png of the result in photoshop), for a duotone file with color https://we.tl/mbvMt5bytk I think, duotone, need to be interpreted using information in Image Ressource I never use Duotone before, so i can't really help to the right way to interpret this kind of file Martin _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
