Hi, I have some problem regarding HDR video streaming.
My TV is LG 50UM7600PTA connect to my Sony HT-X8500 soundbar via HDMI-ARC, and I connect my PC (GPU NVIDIA GeForce GTX 960) to the soundbar HDMI-in so it's like PC > Soundbar > TV.
I can output to TV at 4k@60fps but I can't stream HDR video (Windows 10 stream HDR video is 'OFF' and can't be turned on); playing games with HDR is okay though. If I connect my PC direct to the TV then the HDR option becomes 'ON'.
All three devices (GPU, soundbar, TV) are capable of streaming 4K HDR so I wonder why Windows 10 doesn't recognize the soundbar being HDR-ready.