It seems there is some uncertanity about what users/distributors can do with sdk required for working with their hardware? https://patchwork.ffmpeg.org/project/ffmpeg/patch/201704010120.37843.cehoyos... https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=839941 {this is related to HD capture hw we discuss with Terje} Should someone explicitly mail blackmagic's support about this?