[quietvoid]

Other than that: Is there as of now any other devices than the Shield, that is doing DV as half-baked (firmware bug in shield) or even better? Or do we currently discuss a Shield-Only feature here?

So far it's been working on the Shield, and I think there's been a mention of running it on an Android TV directly too.

quietvoid is working on FireTV 4K Stick compatibility.

I'm not 'working' on it, I just made an issue but I still have no idea how to get it working
So far the only difference between Kodi and ExoPlayer (according to logs) is that Kodi reconfigures the renderer when it receives the first frame from the DVHE decoder.

Do we need further checks? E.g. what happens if a Philips or Sony TV plays such samples with the hevc-dv codec selected for them. Do those just black screen? Or do they ignore the codec and fallback to standard HEVC?

If they fail ... we need to invest in a "allow list" approach, sadly (new word for blacklist I was told, from someone writing from a foxcon IPhone claming I would support slavery).

There are devices which can't playback profile 7 FEL files correctly, but it would be complicated to make a blacklist for this as the decoders don't advertise their real capabilities to the OS/software.
I'm not sure of which Android based device other than the Shield can play them, but others usually fail with a black screen (like the Firestick at least) instead of falling back to HDR10.