[BTRBT]

For personal video, you can use nfo file : https://kodi.wiki/view/NFO_files 

Thanks for the response. I've read over this page, and have tried adding .nfo files to the folder these videos are contained in, similarly to how they are after a multiple-file media library export, but nothing seems to be updating. I've really just been trying to change the displayed title, just to see that it's working.

Have you got an example of how it should look?