Tool to rename and organize existing 'library'


I am looking for the best tool to (re)organize an existing collection. The problem is, for example, some movies currently have their own directory , other series are all collected into a singe directory or a sub-directory. Also, naming is inconsistent currently, based on history.

Is there a tool to help organize this?

My goal is to end up with the naming schemes of movies, directories, previews, etc, as required by Jellyfin, like defined here: Movies | Documentation - Jellyfin Project
I am fine with selecting options for detected movies one by one in some tool, but renaming all files by hand from the command-line or just explorer will be very cumbersome…

Maybe I am looking for the movie-equivalent of ‘music brains Picards’ , where the systems suggests options for renaming, etc.

Thanks for any hints,