It sounds like in your situation, you’d create a shared folder where your media lives (smb or nfs) on the Synology and mount that share to the machine running jellyfin. Then adding the folder as a library will be the same as choosing a local folder.
this post was submitted on 25 Aug 2025
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That was the idea but it comes to give it the path to the folder I don't know what path I have to give it, the one I have from the file manager (smb://nas/videos/) jellyfin says it is not a valid path.
My guess is that I need to give it the path to where it is mounted but I can't find it or even know if it is somewhere at all.
On jellyfin you have to give the local path on the server, where your SMB share is mounted
The smb path to mount from Synology is like:
smb://[NAS]/volume1/[name of your share]
if you have more than one volume you need to choose the good one
Edit: not sure if it was the question actually
In the long run you’ll want to specify where it lives. Manually you could use the mount command, but really you want the share to mount every time you reboot the machine so it’s always available. If you’re after a GUI app to do that, check out smb4k. I think that has options to do automatic mounting to a directory of your choosing (the path would typically be something like /media/<your username>/<synology hostname>/<name of share>).
If you want to do this from the command line, look into autofs, which lets you define a configuration and automatically mount an SMB share whenever your system needs it.
This is what I do. Shared folder via NFS, mounted inside the VM (fstab), added to the volumes of the docker container in the compose file...
https://forum.jellyfin.org/t-mounting-local-storage-in-linux-linux-permissions-primer
This guide may be of help.
It help to understand some things, I'm with the last poster:
And what do I do if I installed Jellyfin via Ubuntu software, it runs, but /etc/passwd shows no jellyfin user exists?
you should be able to find the user jellyfin is running as with:
ps aux | grep jellyfin
the first column is the user name or ID
you’re looking for a line something like this
biru 13576 0.1 9.6 281378280 3170688 ? Ssl Jul09 85:05 /usr/bin/jellyfin --ffmpeg=/usr/lib/jellyfin-ffmpeg/ffmpeg
Let's see, it returned three lines:
oriol 2759 0.0 0.0 3580 1280 ? S 10:21 0:00 bwrap --args 38 -- jellyfin.sh
oriol 2768 0.1 1.9 275074792 323812 ? Sl 10:21 0:09 jellyfin
oriol 11618 0.0 0.0 11804 2304 pts/0 S+ 12:01 0:00 grep --color=auto jellyfin
looks like jellyfin is running as the user “oriol”. does that sound right?
assuming you have your files mounted somewhere locally that jellyfin can access, their file permissions will need to allow access to that user
The thing is that I mount the files using the GUI and I have no idea where they are mounted.
@quediuspayu from ubuntu i use the following command, mounts it as readonly so nothing on nas can be altered
sudo mount -t cifs -r -ro username=username,password=password,uid=root,gid=root //nasip/videos /mnt/videos
On my DS1522+ I have installed the Jellyfin app from the SynoCommunity repository. I used to have Jellyfin on a separate host, but using the app has been much less painful. Maybe that's an option for you?
That was my first idea, unfortunately the DS416 does not support the container manager that I read everywhere is necessary to install jellyfin.
You might try it anyway; as far as I know Container Manager is not required for the Jellyfin app. I have several containers running, but not Jellyfin. Jellyfin is just a regular app installed through Package Center (after adding the SynoCommunity repository).