Apple TV 4K with surround sound bar
I have a Apple TV 4k and using HDMI 2.0 cable to connected to my sound bar. Using another HDMI 2.0 cable to connect my sound bar with a 4K TV.
In audio output, I can select either Apple TV or my sound bar, however, when I select the output as the sound bar displayed, there will be no picture but sound only when I play itune movie.
I must select the audio output as Apple TV to have normal picture.
Is it related to the HDIM cables that I am using?
Apple TV 4K