[quietvoid]

Oh, yeah, are you using a fire stick?
Have you ever figured out what is needed for it? 

Maybe it's just a matter of figuring the right decoder name.

I still believe it's related to ffmpeg removing something, or doing something differently.
peak3d did his tests on a fire stick a while back and that was his conclusion (ffmpeg couldn't be used to demux because it's injecting "metadata" separately).

The decoder used is already correct, there's just a missing piece that makes the device not use the Dolby Vision data at all.
Have not figured out what this metadata is about, as the ffmpeg logs show the RPU NAL is skipped regardless of using ffmpeg or not.

The same behavior seems to affect Sony's Android TV sets.