Each movie needs to be in it’s own folder. it can named in the following format:
<movie_name> <year> <tmbdid>
so for example
Welcome (2007) [20294] and then movie within the folder be named the same thing, with the file extension at the end
and then subtitles with same title

-r flag for recursive so you can copy the entire directory
scp -r <path_to_movie_directory> jelly:/var/lib/jellyfin/media/<library>