Plex is often asking me to upgrade my library now so it can better match Metadata - evidently it will discontinue the old formats soon. I have a 25K-album music collection that I digitized myself and meticulously found artwork for that’s embedded in the music files (mainly .m4a). Hence my question is whether Plex would overwrite that information in my actual music files (something I wouldn’t want to do) or if it just puts the new metadata in its own library files (that’s OK)? Hence, should I do this library upgrade or not…? I welcome suggestions.
Plex doesn’t touch your original media.
The only exception is if you enable the option to delete media from within Plex – in which case deleting an item will actually delete the underlying file(s).
https://support.plex.tv/articles/upgrade-music-libraries-new-metadata-system/
All of my Plex media is on a volume that offers read-only access. Plex works fine, it does not have to touch the original files.
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