Hi! I’ve noticed since the latest update that when any device attempts to play a file with an EAC3 track, transcoding fails immediately. It is not isolated to specific devices and has only started occurring in the last few weeks. Transcoding video and other audio tracks works fine. If I try to cre…

I’ve the exact same issue since the latest update. I’m on the same server version as you… Let me know if you find a solution..

It is more helpful to upload the server logs zip file instead of a snippet because it helps people have a fuller picture of what is going on.

Plex Media Server Logs_2026-05-01_16-09-34.zip (4.9 MB) I’ve added the ZIP file with the server logs. This is issue is still present, I dont know how to fix

Take a look through this post and try some of the suggestions listed (or linked to a forum post) to see if these help to solve your problem. Outside of that the only thing I would suggest is to create a copy of this file with an added audipo track using ffmpeg (such as AAC) if that is a route you ne…

Yeah, I tried everything listed there; unfortunately, nothing fixed the issue. So I’m happy to try what you said with ffmpeg

Here is what I use to add another audio stream to a video file: ffmpeg -i NAME_OF_VIDEO_FILE -map 0 -c copy -map 0:a:0 -c:a:1 aac NAME_OF_NEW_VIDEO_FILE This will end up copying the first audio stream into a new codec as the second audio stream. Then you should be able to choose this one before yo…

I tried same error: [Req#532fd1/Transcode/e69091d9-c3b8-47a7-85f1-ba040b90ad3f/6f253d95-b707-4873-b66f-54aa4e73fab7] [eac3_eae @ 0x7f5103a05640] Cannot group in blocks of 6! Also, I tried opening the file with VLC on windows, and it’s all fine.

My server is also on Linux (Ubuntu LTS) and I can’t launch content if the selected audio track is TrueHD and/or Atmos. (I tried on my Pixel 9a.)

[image] hi_phi: I tried on my Pixel 9a There is a known problem with the Android mobile app failing to play TrueHD audio. Playback fails and a “Error Occurred, Decoder: Init failed” message is displayed. Plex is aware of the issue. It is unknown when a fix will be available. As a workarou…

Can’t transcode any EAC3 codec

Plex Media Server

OttoKerner May 4, 2026, 5:38pm 8

I’m not a Linux expert, but some time ago I’ve compiled this list for issues related to Dolby audio codecs: TrueHD audio transcoding BUG = error not enough space - #2 by OttoKerner

Topic		Replies	Views
EAC3 audio fails to transcode after latest update Plex Media Server server-linux	7	279	November 11, 2022
EAC-3 Transcoding Suddenly Fixed? Plex Media Server server-linux , server-docker , plex-web	0	975	September 10, 2025
EAC3 transcoding failing Plex Media Server server-linux	3	78	September 9, 2026
EAC3 Audio causing transcoding failure? Plex Media Server server-nvidia-shield , plex-web	9	488	January 28, 2022
Files with EAC3 audio won't play? General Discussions	6	702	May 7, 2018

Can’t transcode any EAC3 codec

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