Not seeing all video files

[Volts]

They’re readable to a human, but none of them match the convention in the article.

Plex is looking for this:

• /TV Shows/ShowName/Season 02/ShowName – s02e17 – Optional_Info.ext

So for example:

Season 1
    The X-Files - S01E01 - Pilot.mp4
    The X-Files - S01E02 - Deep Throat.mp4

Season 11
    The X-Files - S11E01.mp4
    The X-Files - S11E02.mp4

The Special you have in Season 10 is best moved if you would like metadata to be fetched automatically. Here’s the TVDB link for it.

Specials
    The X-Files - S00E07 - Re-Opened.mp4

Another approach people sometimes use with Specials, if they really want to keep them in a Season folder, is to name them S10E00 or S10E107 and manually fill in the metadata as desired.

For the Season 9 file with episodes 19 and 20 concatenated together, you have a couple choices.

First (recommended) is to split it into two episodes.

[HowTo]: splitting multi-episode files with MKVtoolnix GUI

The purpose of this HowTo is to split videofiles which contain more than one episode of a tv show into single-episode files. So they show up individually within plex, can be played individually and don’t produce any of the weird things that multi-episode files are plagued with. The tool used is MKVtoolnixGUI it is freely available for all major PC operating systems. Therefore the container format of the output files will be MKV. The input format can be a multitude of containers like AVI, MP4…

Second is to just name it like this:

Season 9
    The X-Files - S09E19 - The Truth.mp4

In that case there won’t be an E20 in the library, but everything will just work.

Another choice is to name it like this:

Season 9
    The X-Files - S09E19-E20 - The Truth.mp4

In that case, both episodes will show up in Plex … but when you try to play either of them, both episodes will play. It’s quite confusing.

If you have a significant amount of media to clean up, consider investing in FileBot or TMM.