"Conversion failed. The transcoder exited due to an error"

Plex Media Server NAS & Devices
1

Server Version#: 1.42.2.10156
Player Version#: 4.147.1
Hello,

I recently started to have the “Conversion failed. The transcoder exited due to an error” error on a single TV series, the file would not start or will crash after some time and won’t be able to be played again.

I saw those two errors in the logs :

Nov 16, 2025 10:21:31.497 [140046520761144] ERROR - [Req#1ad0d9/Transcode/hud0dxklpnqe83a5rkwumcxn/6e0c0559-d919-4f24-a491-03d357fd55f2] [eac3_eae @ 0x7f804a314ac0] Cannot group in blocks of 6!
Nov 16, 2025 10:21:31.497 [140046534966072] ERROR - [Req#1ad0da/Transcode/hud0dxklpnqe83a5rkwumcxn/6e0c0559-d919-4f24-a491-03d357fd55f2] Error while decoding stream #0:1: Invalid data found when processing input

But “Invalid data found when processing input” is too generic and “Cannot group in blocks of 6!” has never been posted on this forum !

Does someone knows what to do to fix that error ?

Plex Media Server Logs_2025-11-16_11-04-03.zip (3.8 MB)

1 Like
2

ive had the same problem since 1.42.2.10156 :slightly_frowning_face: i put up a post a couple weeks ago but nothing hope the problem is sorted next update when ever they decide to release one

3

Did you check your inotify values?

4

Did you got any answers or solutions ? Do we know what cause this ?

5

Just did and followed the post you linked, however i have wayyy less than 8192 folders… So shouldn’t be that. Thank you for the idea anyway !

6

i sure havent when i looked yesterday im just waiting for next update and hope that fixes whatever is going on ill just keep watching movies

7

The blocking fixes (multiples of 6) was implemented in PMS several releases ago.

May I get a sample of the file to test here?
(I think it’s a damaged / incorrectly encoded media file)

8

Hi, thank you for answering !

How am i supposed to provide a sample of the file ?

Is the blocking fixes important or can it be turned off ? sometimes plex can play most of the file without any problem so i’m wondering…

9

Sorry! I forgot to give you the link for creating a sample file.

https://support.plex.tv/articles/201035968-generating-sample-files-from-media/

We can’t ‘turn off’ the blocking. It’s part of the Dolby-provided encoder. Dolby requires we send it audio in groups of 6 audio segments (blocks). It then converts the audio to the output format needed.

I’m sending you a link so you can attach the file (if small enough) or a download link where I can get it.

10

Ok i should have done what you asked !

12

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