I have the refresh metadata option unchecked. I have selected all the covers I want for my TV shows, and Plex still changes the posters back to what they were originally (even if the match was incorrect to begin with). How do I Keep Plex from making these changes???
Disable the automatic emptying of the library trash.
Can you explain more about what this does specifically and if there are any side effects?
The reason this happens is usually one of these things:
- the NAS is spinning down its hard drives when idle
- the external hard drive with your media is spinning down its platters when not in use. This is particularly aggressive with external drive models which are advertised as “power efficient”.
- The network connection between Plex server and NAS/fileserver is wireless, or allows its link speed to get lowered when idle
If one of these conditions apply to your situation, you better disable “Settings- Server - Library - Empty trash automatically after every scan”.
Because if you don’t, what can happen is this:
As the server is starting a library scan (either triggered manually or automatically by setting) the media storage doesn’t deliver the first results fast enough, so the requests are returned with “file not available”.
If you now also have this preference in Plex enabled then this will lead to these items being removed from the Plex library.
This in turn also removes all the metadata customizations of the removed media (poster, title, descriptions etc.). But since the media files are not really removed from the file storage, they are getting re-added at the next library scan – but this time again with their default metadata.
The side effect of disabling the automatic trash disposal is that you’ll have to do that manually.
But if you are affected by one of the conditions above, you better only empty the trash after you scanned the library twice.
(the first scan serves to “wake up” the media storage. But it can lead to media items getting marked as “unavailable” as explained already. The second scan then removes the “unavailable” status again, because all the hard drives are now still spinning from the first scan.)
Either this or tell your hard drives to never sleep. (which can be impossible with external hard drives, as they often don’t obey the power settings of the operating system.)
Same applies to network connections. Only use wired connections.
Disable Energy Efficient Ethernet and the link speed change (if available, that is).
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