[sk83]

But then how come that the profile 7 MKVs trigger DV on our TVs and seem to have the correct colors? Or are you saying that this is some kind of "fake" DV where we are actually looking at HDR10 video without the DV metadata?

Exactly. I believe the decoder sends a "this is DV" signal to the TV, but the actual data is just HDR10. All profiles except profile 5 have a base signal(SDR or a form of HDR) which will look correct when decoded w/o the DV bits. This is identifed by the BL signal compatibility ID.

See, that's the pain with blackbox decoders / renders and magic MrMagic. No one can tell you that and you cannot verifiy it. But the good thing is: As long as some green light is shown somewhere, people have the "this is much better" experience in their brain, no matter the picture. Happens for years with audio passthrough ... Perhaps they signal DV, just send "linear constant" metadata and do tonemapping / processing internally :-) - you cannot prove, you cannot know - and when you tune the "contrast" and the colors a little bit more ... subjective impression changes again.

 
Yup. The only way to be sure is to analyze the actual HDMI signal with a HDFury device or similar(as long as it doesn't rely on a "digital green light" but the actual signal data)

WRT to Kodi, heres my two cents on how it could handle DV on a high level:

1. Decide if the stream is DV (this info is available in the builds in this thread)
2. Gather info about the DV stream, most importantly profile, level and BL compatibility. (this info is available in the builds in this thread)
3. Check if the devices DV decoder supports the DV profile and level. (possible to check if the profile is supported on the Shield at least, I don't have any other devices)
4. If it does, decode as Dolby Vision(with the correct stream and necessary metadata)
5. If it doesnt, decode stream with decoder according to the BL compatibility.


I have this process somewhat implemented in the build I'm using now, but it is hard-coded for the Shield and not device agnostic(that is, if it's DV7 -> use hevc).
Also, I'm not sure if the actual stream sent to the decoder contains all necessary bits and pieces. The logs which states Dolby Vision profile 0 is what's making me unsure. This is either because the stream is missing something, or bacuse the decoder is missing info about the stream. Maybe some work is needed in the JNI wrapper to expose more functionality. I don't know.