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@ag.or.at/#10354

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?