@trevzilla said:
Finally, if it is an issue with .mp4’s I’d be happy to remux it into an .mkv instead. Could this be causing the issue by chance?
No, this is not the issue. In fact, under many circumstances, mp4 is the optimal container format in Plex.
The issue is, that currently, there is no metadata agent assigned to your movie.
It is ‘unmatched’ guid="local://16500"
For the extras to get recognized, you must achieve a ‘match’.
Since this is a documentary, you’ll probably never achieve a match with the Plex Movie agent (it only matches ‘cinema’ movies).
You can match it using the ‘Personal Media’ agent
or you can try the TMDB agent.
Behold: TMDB has it listed Petit Bus Rouge (2013) — The Movie Database (TMDB)
So, enter the preplay page of your movie
click on the ellipsis ( . . . )
‘Match’
‘Search Options’
now change the ‘Agent’ dropdown to ‘TheMovieDatabase’
put the title and the release year into the appropriate input fields, pick your language
‘Search’ … wait a few seconds
click on the only search result
