Basic Connections and Audio output

Question

Recently i bought Sonos Arc and a pair of Sonos One SL for surround, i have the apple TV 2022 model and LG NANO 65”.

Based the documents and community articles here is how i have connected these devices.

Sonos Arc → LG TV on eARC port

Apple TV → LG TV HDMI 1

Here is the challenge, I use Plex to stream my content and i have a 5.1 Dolby content

When i stream the Plex content via apple tv i see PCM on the Sonos app and not getting surround sound

When i stream the Plex content via LG tv i see Dolby 5.1 on the Sonos app and getting surround sound

So what is the right way of connecting these devices if i want to use apple TV are there any specific setting to be changed ?

Appreciate your help,

GuitarSuperstar · Accepted Answer

In the TV settings,make sure theHDMI Input Audio Format setting is set toBitstream andDigital Sound Output is set toPass Through.If you have the ChangeFormat setting on the Apple TV set to OFF, you should see “Multichannel PCM 5.1” displayed in the Sonos app. If you have Change Format set to ON and the Audio Format set to Dolby Digital, you should see “Dolby Digital 5.1” displayed in the Sonos app.

GuitarSuperstar · Answer

What specific audio format are you playing from Plex? “5.1 Dolby” isn’t very clear. If you are streaming content with a Dolby TrueHD audio track, the Apple TV 4K doesn’t support it.

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