[fandangos]

Thanks for the explanation.

Let me see if I understand correctly. Profile 5 is a "DV stream only" format (single-layer) that only contains a DV encoded video stream. Profile 7 is a dual-layer format where the base layer is (usually) HDR10 and the second layer has the DV metadata. Apparently the Shield can decode profile 5 and send it to the TV correctly. But for profile 7 we cannot be sure the DV metadata is used, so we could be looking at an HDR10 stream that is just labeled as DV?

That is my impression, yes. I also believe it supports profile 8(testing it atm.), which is also single layer, but with a standards compliant base signal. According to the specs, profile 7 only supports HDR base layers. Profile 4 supports only SDR BL, and profile 8 can support both SDR and HDR BL.

I don't see this stream ID in any mkv remux but I can't say for mp4. 
https://github.com/xbmc/xbmc/commit/7250...6be1bfa602
I made this commit to fix green screen when playing complete UHD BD with menus.

This is part of main kodi now, I don't think it's part of Leia, but it is part of matrix.

@sk83 correct me if I'm wrong but all mkv remux are the same profile, isn't it?
What's the benefit of forcing support for every other?
Is there any content, besides those test samples that do use those profiles?