Settings related to your libraries on your Plex Media Server. You can access these under Settings > Server > Library in Plex Web App.
Related Page: Plex Web App
Scan my library automatically
When a change is detected in the source location for a library’s content, the appropriate library will be scanned.
Note: This function relies on the computer’s operating system providing the “something changed” trigger. Some operating systems don’t provide this trigger and content mounted via a network will also typically not work. If your library doesn’t automatically scan, you may have to set a periodical scan or do it manually.
Related Page: Scanning vs Refreshing a Library
Scan my library periodically
Turning this on will cause your Plex Media Server to run scans on your libraries using the designated interval.
Library scan interval
Choose to scan all of your libraries on a time-based interval. Choose the interval to use from the dropdown. Available frequencies:
- every 15 minutes
- every 30 minutes
- every 2 hours
- every 6 hours
- every 12 hours
The scan interval is based on when the Plex Media Server is started. For instance, if you have it set to “every 6 hours” and you start your server at 12:35pm, then a scan will be started around 6:35pm.
Empty trash automatically after every scan
Choose to empty the library Trash after every update. With this option enabled, when an item’s file is deleted from the drive, it will be removed from the Plex library on the next scan. Disabling this option keeps the item in the library with an indicator superimposed over the item’s poster when the item is removed.
Related Page: Emptying Library Trash
Generate video preview thumbnails
This option creates a series of preview thumbnails from a media item when it is analyzed. Creating these images can take a considerable amount of time, CPU resources, and increase the storage space used. The images are stored in your Plex database so be careful you don’t fill the drive!
These images are used by some Plex apps when you move back and forward in an app with the timeline scrubber. They’ll also be displayed in Now Playing when someone is streaming from you so that you can see where they are in the video.
- never – never generate thumbnails.
- as a scheduled task – generate thumbnails during the regular server maintenance period.
- as a scheduled task and when media is added – generate thumbnails for new items when they’re added and for existing items during the regular server maintenance period.
Warning!: Be careful about enabling this feature prior to adding a large amount of content to your library. Doing so may mean that your server will be generating index files for hours or even days.
Related Page: Video Preview Thumbnails
Generate chapter thumbnails
Chapter thumbnails provide images in the chapter view on supported apps. They can take a little time to generate and consume very minor additional disk space.
- never – never generate chapter thumbnails.
- as a scheduled task – generate chapter thumbnails during the regular server maintenance period.
- as a scheduled task and when media is added – generate chapter thumbnails for new items when they’re added and for existing items during the regular server maintenance period.
We recommend using the default
as a scheduled task value.
Analyze audio tracks for loudness
Letting the server to analyze your audio tracks for loudness information will allow you to make use of features such as leveling (often referred to as “normalizing”) the loudness as well as letting apps perform smart transitions between tracks. Analysis can cause high CPU usage, but doesn’t take very long to complete for individual tracks or albums. If you’re adding a lot of music (or creating a music library for the first time), the process could take a long time to complete.
- never – never perform loudness analysis.
- as a scheduled task – perform loudness analysis during the regular server maintenance period.
- as a scheduled task and when media is added – perform loudness analysis for new items when they’re added and for existing items during the regular server maintenance period.
You can set who is allowed to see location names for items which contain geolocation metadata. For instance, photos taken by a mobile phone will often have GPS data embedded, which we make use of to determine where the photo was taken.
By default, only the server admin/owner account will be able to see the location information. You can optionally allow shared users to see the information, too.
OS X Specific Settings
Display system notifications when scanning libraries.
Click on the Show Advanced button at the top right of the settings area to toggle display of advanced settings. Be careful when adjusting or using advanced settings.
Run a partial scan when changes are detected
When changes to library folders are detected, only scan the folder which changed rather than the entire content location. This works together with the normal Update my library automatically setting (and requires that setting to be enabled).
Allow media deletion
Plex apps (signed in with the same Plex account as the Plex Media Server) will be able to delete media from the library. Users with which you share your server will not be authorized to delete media, even with this setting enabled.
Deleted items will be immediately removed from your library and the corresponding media file will also be deleted. Most operating systems will place the file in the system Trash or Recycle Bin, but it’s possible the file will be permanently deleted immediately (particularly when deleting large numbers of items).
Warning!: Be careful enabling this setting as it allows actual source media files to be deleted from your system.
Note: Shared users cannot delete media through an app, even with this option enabled. Only the server owner account can delete media.
Related Page: How do I delete something from my Library?
Weeks to look at for On Deck
Lets you choose how many weeks to check for content to be included in the On Deck data for a library. The default value of 16 weeks is good for the vast majority of users. You can lower the value if your On Deck is particularly slow to appear. (Increasing the value can cause On Deck or app dashboards to be slower to appear.)
Include season premieres in On Deck
Season premieres generally will fall outside of the number of weeks for On Deck for most since it can be several months before a new season starts. Enabled by default, this setting makes episode one of a new season appear even if it falls outside of Weeks for On Deck setting (assuming all previous episodes are watched).
Run scanner tasks at a lower priority
On low-powered systems (e.g. ARM-based NAS devices), it can be beneficial to run scanner tasks at a lower priority than other tasks. This can help ensure they do not interfere with regular streaming.