Problem playing EAC3 and TrueHD audio

I have an M1 Mac mini running Monterey (12.2.1) and am using Plex Media Player (4.75.0) to play video files that are being served from a Synology DiskStation DS918+ (DSM 7.0.1-42218 Update 3) running Plex media Server (1.25.6.5577-7000). The computer is connected via an HDMI cable to the AV port on a Arcam AVR10.

When I play a video with an EAC3 5.1 or TrueHD 5.1 or 7.1 soundtrack, it's output in stereo and the volume is very low. Is there a fix for this issue? I do not experience the issue with other Dolby Atmos, DTS, or other Dolby digital soundtracks.

Mac mini 2018 or later

Posted on Mar 10, 2022 12:26 AM

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1 reply

mikeg28806

Community Specialist

Mar 11, 2022 6:22 AM in response to Ratboy

Hi Ratboy,

We recommend taking steps to isolate the behavior.

Test a locally stored video file in the same player, is there any change? This might indicate an issue with the source device, or stream. Test video in a different app. If the volume in other apps plays at the level expected, you may need to troubleshoot or make adjustments to settings within the app.

Completing these steps may narrow down the cause.

The app developer will be the best source of information on the software they publish, and would be in the best position to assist further if the behavior is narrowed down to this specific app.

We hope this helps!

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Problem playing EAC3 and TrueHD audio

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