https://paste.coreelec.org/Mcrh8Q
I just try 20.4 ng-dv, the same issue with 20.3
use kodi emby add-on, am6b+ direct to my Sony x95ek hdmi4 with dolby vision setting, hdmi3 earc to my Sony ht-a50000 soundbar.
in CoreELEC setting,i use tv-led, dolly vision lossless
some movies purple, the codecinfo shows 12bit rgb,such as 2001.A.Space.Odyssey, Bullet.Train, p7-fel mkv
some movies no issues, the codecinfo shows 8bit rgb,such as wall-e，p7-fel mkv
some movies start ok, but after stop and resume goes 12bit rgb，both Mel or fel