[dseto]

It is via mpc-hc as the external player for all media from Kodi via plex app. in doing more research it appears it is the way kodi opens the movie in mpc-hc, by default the movie title name from kodi is "file.m2ts", so it doesn't send the flag for madvr to turn on hdr tone mapping ".hdr=on."  

example file name - Avengers.Endgame.2019.2160p.hdr=on.m2ts , opens in mpc-hc as file.m2ts, so madvr doesn't read the flag to do the tone mapping for hdr.


looking for other ways to work thru this, not luck at the moment.

After driver updates (took a long time to research) and removing ffdshow, no longer have issue. kodi (via plex app)has madvr in mpc-hc open all hdr content correctly now.