3D Playback

[fzinken]

@Cerus98

I finally noticed that none of the available display resolutions were 3D - they all said 2D. Kept tinkering and googling and finally had the idea to disconnect the HDMI cable going to my 4K TV. (The Denon has two monitor outputs.)

If the Denon is not combining the display capabilities of both displays in a fake EDID and sent that you would need to create manually the respective capabilities files using the information when the TV is connected and disconnected.
See this thread for and idea of the concept.

Unable to change resolution and 3D reading in Kodi 19.3 ? (solved)

The 3D resolution modes are listed separately from the 2D modes. If your device is not getting the EDID from its display we need to specify the 3D modes in a file called disp_cap_3d. But we don’t know what modes your TV supports unless you can connect a good vero to it and get the logs. If you are sure this problem started only when you upgraded to 19.3, you could reinstall 19.1 from the August 2021 release.