@beckfield said:
Plex has made it known that they made a conscious decision to not modify media files. I think the only exception to this is the option to allow the server owner to delete media files from within Plex.
The built in metadata editor in plex has made it very easy to correct an error on the fly on any player, without having to open another program or a file explorer window to change a tag. I have been using the feature for a while without realizing that it does not change the metadata in the files.
Writing metadata back to files should be an option in library settings. Example:
