[Bibio]

hhhmm. i thought this thread was to switch HDR on. i got a bit board half way though so please accept my apology if you have figured out a way to send the metadata to a tv/monitor to enable HDR.

HDR is a metadata to tell your tv/monitor to auto switch to a different 'picture profile' which is HDR. once the metadata has ended your tv/monitor switches back to the 'standard' picture profile, so as HD/SD content looks correct.

people with a true capable HDR tv/monitor know this as a logo usually appearers 'on screen' to tell the user that HDR has been engaged and playing HDR content at which point the tv/monitor switches the picture profile to HDR.

my understanding of the subject was to make it so the film producers could set different colour profiles for each 4k title so when the metadata was passed on your tv/monitor it set the correct 'hdr picture profile' but in reality its not and its just another settings profile that the user can choose to alter if they wish.

dolby came up with a way to set metadata per frame and at the moment its another 'format war' which i believe HDR will win as its open source.

from what i can see all your doing is just setting different 'colour' profiles which you should be able to do on your tv/monitor anyway.