Server Version#: 1.20.3.3483 Player Version#: 6.6.12.6662 Sonos Playbar 5.1 Setup. (AC3 5.1 is the only format supported.) It’s been reported here before, but it’s still a problem. Emby downmixs the same files to AC3 5.1 correctly with the same Roku audio settings. I tested a few files and these…

I can confirm version 6.7.15 that was published to the official channel on 02-Mar-21 fixes this issue. Thanks to all that contributed to the fix. I consider this issue SOLVED. :grinning:

Roku 4 (Ultra/Premiere+) - Atmos/DTS 7.1 downmixed to AAC stereo, not AC3 5.1 with Sonos [SOLVED]

Plex Players Streaming Devices

Insomnic_1 February 3, 2021, 8:04pm 7

Could this be related to what you’re seeing? Roku transcoding AAC 7.1 to Stereo MP3? - #27 by ljunkie

A bug with transcoding to mp3 stereo on roku/chromecast for 7.1 files is being fixed for 5.1 transcoding but wasn’t fixed for 7.1 but it sounds like they’re looking at it now? A few comments on that thread from Plex employee about it.

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Roku 4 (Ultra/Premiere+) - Atmos/DTS 7.1 downmixed to AAC stereo, not AC3 5.1 with Sonos [SOLVED]

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