When the Apple TV Remote App or Apple TV Control Center control is in the foreground the volume rocker buttons actually control your HDMI-CEC connected device's volume (sound bar, TV etc.). Here's what it looks like on iOS 11 beta's Control Center Apple TV control on my ATV4 with tvOS 11 beta.
Now I never have to get up and find the sound bar remote or Siri remote to make adjust the master volume on my system!
Looking ahead, I'd love to see this implemented in HomeKit with automations that could turn on Apple Music at a certain volume based on existing HomeKit triggers.
*Edited wording reflect that I'm not sure if this is a new feature in Apple TV Remote app, tvOS 11 beta or has been around in previous tvOSes.
Now I never have to get up and find the sound bar remote or Siri remote to make adjust the master volume on my system!
Looking ahead, I'd love to see this implemented in HomeKit with automations that could turn on Apple Music at a certain volume based on existing HomeKit triggers.
*Edited wording reflect that I'm not sure if this is a new feature in Apple TV Remote app, tvOS 11 beta or has been around in previous tvOSes.
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