Notify the screen to change to HDR10 / Dolby Vision mode

mpv version and platform

mpv v0.27
Windows 10 x64 Fall Creators Update

Reproduction steps

When playing an HDR10 or Dolby Vision video, mpv doesn't notify the television to change the display mode accordingly.

Expected behavior

It should change the screen mode to HDR10 or Dolby Vision, just as it does the Apple TV 4k or a BluRay player.
MPC-HC v1.7.13 + madVR v0.92.9 makes the screen change to HDR10 mode correctly, but also doesn't work for Dolby Vision.

Sample files

Dolby Vision: https://drive.google.com/file/d/0BwxFVkl63-lEWmNWcGl4eVRWS2M/view
HDR10: https://drive.google.com/file/d/0BwxFVkl63-lEdU9Ma0VYc3YxSVE/edit (No audio)

This videos play correctly and change the display mode of my television accordingly if played from the USB port, but not from mpv.

Files obtained from: http://kodi.wiki/view/Samples
Sorry for the Google Drive links, but I don't own these files.

Thanks in advance!

Start by reproducing the issue on Windows 10 with the linked HDR10 and Dolby Vision sample files while comparing mpv with the stated MPC-HC and madVR setup. Trace mpv's Windows display-output handling and determine what is needed for the television to switch modes; done means both formats trigger the expected HDR10 or Dolby Vision display mode.