tried it months ago, setup was horrible, could never get it to work, tried both on the umbrel server and startOS server and standalone. Nothing. Garbage.
Discussion
i dont think there is a good solution without your friend downloading some app, keet seems good but you could even have him stream a torrent
there is web apps for torrents www.makeuseof.com/best-torrent-streaming-apps/
https://webtor.io/#/ and brave browser supports them dirrectly
He's on a samsung tablet with almost nothing installed except brave and simplex
https://ufile.io 5Gb 30days?
I tried it but it only lets you download the file, not stream the video.
depending on the file some browsers can stream, tbh its quite a problematic set of circumstances, you could also run an ftp server?
or work out why jellyfin wont work for you?
it wont load the contents of the network folder i point it to even though the same machine can see those files.
its been over 20 years since I've done that.
Any recommendations?
depends on your os, but on linux http://proftpd.org
Thanks! GNU/Linux only here!