Jellyfin struggling with non-standard extra features

[King Mustard]

For my example, The Big Bang Theory currently has six extras on TheTVDB.

I have two of them (S00E05 and S00E06) but I also have lots of extra features from the DVDs that are not on TheTVDB.

For example, I have:

The Big Bang Theory S00E00 S01 Gag Reel.mkv
The Big Bang Theory S00E00 S02 Physicist to the Stars.mkv
The Big Bang Theory S00E00 S03 Take-out With the Cast.mkv
#The Big Bang Theory S00E00 S04 The Big Bang Theory Theme Song.mkv
The Big Bang Theory S00E05 Comic-Con 2016 Writers Panel.mkv
The Big Bang Theory S00E06 A Big Bang Farewell.mkv

Jellyfin shows S00E05 and S00E06 correctly:

   

However, for the others, it just duplicates what it thinks is S00E01 ('Unaired Pilot') from TheTVDB:

   

This is happening for all my TV shows.

Any ideas?

[theguymadmax]

Specials should be placed in the Specials/Season 00 folder if they have a corresponding match in the metadata provider.

All other specials should be placed in an Extras folder.

[King Mustard]

Specials should be placed in the Specials/Season 00 folder if they have a corresponding match in the metadata provider.

All other specials should be placed in an Extras folder.

I appreciate it.

In another example, I have lots of Red Dwarf extra features that are not listed on TMDB (which I use).

The ones in the \\Red Dwarf\Specials folder work great. e.g.:

\\Red Dwarf\Specials\Red Dwarf - S00E09 - Red Dwarf A-Z (199.mkv
\\Red Dwarf\Specials\Red Dwarf - S00E21 - The Doug Naylor Interview.mkv
\\Red Dwarf\Specials\ Red Dwarf - S00E54 - Dwarfing USA.mkv

However, the ones that are not listed on TMDB look messed up within Jellyfin.

Currently, they have their own folder, such as:

\\Red Dwarf\Specials\Season 00\Red Dwarf - S00E00 - Series 1 - Drunk.mkv
\\Red Dwarf\Specials\Season 00\Red Dwarf - S00E00 - Series 2 - Alternate Personalities.mkv
\\Red Dwarf\Specials\Season 00\Red Dwarf - S00E00 - Series 3 - DVD Menu.mkv

How can I fix those that are not listed on TMDB (that I have named S00E00)?