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Atmos

(Topic created on: 14-12-2023 07:41 AM)
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Starone
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From October 2022 till around December 2022 or January 2023 I had dolby atmos via Dolby digital+ then it stoped and I only got dolby digital, this is with a fire cube3 connected to a UE65NU8070 to a sonos arc via the arc port on the TV. Chased with amazon for almost a year and now have the below. So now need to find a work around, looking like the Arcana 4k Fury is next go.

Issue here is not the Fire TV Cube. Issue is present in Samsung UE65NU8070 TV which removed Atmos metadata in "Fire TV Cube -> Samsung UE65NU8070 TV -> (ARC) Sonos Soundbar" connection topology.

This Samsung UE65NU8070 TV has issue with high bitrate Dolby Atmos Metadata. It can only handle lower bitrate (~768kbps) DD+ Atmos closer to DD+ bitrate (~640 kbps). It can't handle high bitrate DD+ Atmos(1335kbps) and truncate Atmos metadata. So, Sonos Soundbar will not show Atmos.
Older Fire TV Stick with MS12 V1.x output has maximum 768kbps DD+ Atmos but all newer device with new MS12 V2.x need to support (minimum) 1335kbps DD+ Atmos .

Dolby mentioned - The TV was approved for MS12 v1. While Atmos passthrough was tested as part of the approval process, the datarate of the test signal did not go as high as 1355 kbps. They will run some more test on this TV and reach out to Samsung as well.
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