The best metadata to have in video files is NONE.
But
Metadata, bogus, a high possibility, can be read in mp4 files and for most folks is a real problem. In that case they do this and stop worrying about it. Plex will then concentrate on the file and structure it expects and stop preferring bogus embedded metadata:
And, as always - if you want Plex to behave as expected, follow the naming and structuring rules - especially for TV Shows - or your Plex Career will be frough with much Drama - most of it bad.
This, however, will change your life:
It changed mine - I used to be a Calico Cat named Mittens…
