I couldn't believe it until I see it with my own eyes, HDR is really working with YouTube for Android TV on the Ematic Jetstream and my Samsung 4K TV!, I guess other devices like the Mi Box and Mecool devices are also supported.
One thing left to check though is if 5.1 audio is working with Android TV devices different than the Nvidia Shield (it has support since last year), when they are connected to an AV receiver with HDMI inputs and multichannel PCM support.
Can someone with a Mi Box or Jetstream verify if it's working?. Here is a video sample:
The Incredibles - Family Dinner (HDR - 4K - 5.1)
Thanks in advance.
It has always been working on Sony android TV systems.