It does work for movies if they're in the same directory and have the same name before a -.
For shows there's sadly now way iirc.
E.g. Movie Name (2025) - 1080p x264.mkv and Movie Name (2025) - UHD HEVC.mkv would make Jellyfin show a video selection in the same way they do for audio currently.
Jellyfin in general requires proper naming for media to get detected, which is not problem with automation but not that great for a collection grown over time.