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#+date: <2023-07-19 Wed 00:00:00>
#+title: How to Avoid Plex Error: 'Conversion failed. The transcoder failed to start up.'
#+description:
#+slug: plex-transcoder-errors
* Plex Transcoder Error
Occasionally, you may see an error in your Plex client that references a
failure with the transcoder conversion process. The specific error
wording is:
#+begin_src txt
Conversion failed. The transcoder failed to start up.
#+end_src
* Debugging the Cause
In order to get a better look at what is causing the error, I'm going to
observe the Plex console while the error occurs. To do this, open the
Plex web client, go to =Settings= > =Manage= > =Console=. Now, try to
play the title again and watch to see which errors occur.
In my case, you can see the errors below are related to a subtitle file
(=.srt=) causing the transcoder to crash.
#+begin_src txt
Jul 19, 2023 16:49:34.945 [140184571120440] Error — Couldn't find the file to stream: /movies/Movie Title (2021)/Movie Title (2021).srt
Jul 19, 2023 16:49:34.947 [140184532732728] Error — [Req#7611/Transcode/42935159-67C1-4192-9336-DDC6F7BC9330] Error configuring transcoder: TPU: Failed to download sub-stream to temporary file
Jul 19, 2023 16:49:35.225 [140184532732728] Warning — [Req#760d/Transcode] Got a request to stop a transcode session without a valid session GUID.
Jul 19, 2023 16:49:45.561 [140184532732728] Info — [Req#7648] AutoUpdate: no updates available
Jul 19, 2023 16:51:23.402 [140184510081848] Info — Library section 1 (Movies) will be updated because of a change in "/movies/Movie Title (2021)/Movie Title (2021).srt"
#+end_src
* Solving the Error
In my case, I simply removed the subtitle file because it was not
critical to keep. You may also avoid this by turning off subtitles if
you don't want to delete the file.
#+begin_src sh
rm -rf "/movies/Movie Title (2021)/Movie Title (2021).srt"
#+end_src
Once the subtitle is removed from the directory or subtitles are turned
off, try to play the title again. At this point, it should play without
error. If not, reopen or refresh your Plex client and the Plex server:
#+begin_src sh
sudo systemctl restart plexmediaserver.service
#+end_src
* Related Discussion
Looking at
[[https://forums.plex.tv/t/subtitles-crashing-plex-transcoder-samsung-q80-tv-with-or-without-hardware-transcode/741441/2][a
related Plex forum post]], it seems that =.srt= subtitles are the core
issue here. However, Plex does not seem to have a resolution that fixes
these errors.
Unfortunately, I would suggest converting subtitle formats, burning the
subtitles into the title, or simply removing subtitles when they cause
crashes.
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