I don’t want to plug a USB into the server. So any kind of app that offers such functionality is fine as long as it can run on windows or linux. If my question is cringy, please note that I am very much new to this stuff. Thanks in advance!
Depends on what the OS is but you can just make a network share. If you use Linux then search up Samba, it’s easy to set up and works great. There’s lots of tutorials to do it on Windows as well but sharing folders in windows is pretty weird to me.
Filezilla is simple i exposed my kid to it. Hes new and hopped right on board. Easy to move files via sftp or ftp.
NFS is kinda complex to setup, but very fast.
Any FTP server would do, kinda easy to setup, fast (unless you’re transferring like 10k 1kb files).
SMB is not recommended, as older versions are kinda vulnurable, modern versions can be good, but i haven’t really tried it.
Majority of file managers on Android would support SMB and FTP, Windows and Linux too.
Overall i would recommend looking at FTP server. It’s usually easy to setup, and it’s good in transferring big files (which is usually what Jellyfin is working with).
I do exactly this by running a FileBrowser instance pointing to my media files. As well as uploading it makes rearranging etc easy.