Good Evening;
Dolby Vision tone mapping (color space-color palette) is different to normal SDR (standart dynamic range) color system.
If a mediaplayer machine has hardware based Dolby Vision VS10 Engine Board (Some rdt1619dr chip) then convert color system to normal led tv.
But anther problem is dolby vision profile level.
DV has profile levels From 4 to 20. These mediaplayers can only convert some levels.
Usually 4K Films are profile 7,8