I have recently migrated to a new NAS running TrueNAS SCALE and when I install the Plex Docker I am getting the following error: Playback Error Conversion failed. A required codec could not be found or failed to install. This happens no matter what file format the files are in (avi, mpeg4, mkv). …

So i gave up on the app side and spun up a VM. All working within minutes. The codec issue was not a permissions issue from what i see, it was am issue woth docker handing the transcoding off to the sharing side. Of note, i do not have plex pass, so no claim code would ever come into play here.

Migrated to TrueNAS SCALE for Plex server and cannot playback files

Apps and Virtualization

Fleshmauler December 16, 2024, 5:28pm 5

This chain might be of help. Might be permissions issue.

Topic		Replies	Views
Testing PLEX on TrueNAS-SCALE-24.10.0.2 Apps and Virtualization SCALE	21	2665	November 10, 2025
SOLVED: Install of plex did not give me the server menus TrueNAS General SCALE	12	2221	November 29, 2025
How to install Plex Server on Dragonfish? Apps and Virtualization SCALE	13	758	August 17, 2024
Plex App on Causes High Pool Usage / Stop App reclaims space Apps and Virtualization SCALE	13	170	December 10, 2024
Media files not showing in Plex Apps and Virtualization SCALE	15	4156	January 29, 2025

Migrated to TrueNAS SCALE for Plex server and cannot playback files

Related topics