Settings to view hdr in Plex Media player on Windows 10

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Here are some general observations

  1. you can’t turn on HDR in the windows display control panel unless you have an HDR capable display (and proper cabling too I reckon)
  2. you must have 10 or 12 bit video turned on for HDR. You can’t turn that on using a windows control panel. You’ll have to turn it on using your gpu control panel. Your display will tell your gpu what video modes can be activated by EDID. I have an LG OLED and the highest spec I can send is 12bit 4:2:2.
  3. when you turn on HDR in the windows display control panel you don’t actually get hdr. Weird I know. You get BT2020. HDR is technically data encoded in a video stream that tells the display how to display what it is displaying. You won’t get that data unless you try to play back HDR encoded video.
  4. when you try to play back HDR video in windows, if HDR is not turned on and you haven’t activated 10 or 12 bit color in your gpu and you haven’t activated deep color or whatever on your display and if you don’t have an HDR display, the video will look weird unless it is tone mapped.
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Building HTPC for plex need advice