TV Shows won’t work in Movie Libraries. Period.
https://support.plex.tv/articles/200288926-creating-libraries/
Now you have the TV Show library - it won’t work without the proper file names and structures:
https://support.plex.tv/articles/naming-and-organizing-your-tv-show-files/
Using MP4/M4V files, you say? Do this:
With LMA in priority, Embedded Titles within MP4/M4V files are preferred - even over a perfect file name. Local Media Assets should - AT ALL TIMES - remain enabled (unless specifically instructed to turn it off).
Local Media Assets should be ‘Demoted’, to the bottom of the stack of active agents under ALL tabs in Shows and Movies, but should NOT be disabled.
Local Media Assets is needed for many things - it doesn’t need to be given Tip-Top-Priority (as Plex has so hatefully placed it as it’s …
As you battle Plex Tooth and nail - naming/renaming/restructuring/etc., there will come a time when you just have to start over. The Plex Dance is the ‘Do-Over’:
The purpose of this is to remove all cached metadata and xml data for an item that Plex usually keeps. This helps when you want to “start from scratch” for particular item
move all files for the media item out of the directory your Library is looking at, so Plex will not “see” it anymore
scan the library library (to detect changes)
empty trash
clean bundles (in menu next to server name, when accessed under ‘More’)
double check naming schema and move files back
scan the library
Support articl…
All steps, in order - or it won’t work.