SOLVED: Playback issues with certain files

[Schos]

Thank you for the link! I did adapt the transcoding as requested, low power I can not use at the moment (the host is running Debian 11, Debian 12 is recommended as the whole firmware-non-free repo stuff changed, so I'll be upgrading to Debian 12 soon).

But the issue remained (takes immensely long to start playback)
What I tried next:

• copy episode in question to the same host machine, add a new volume, add a new library, remove old library
  
• start playback. And it works flawless as expected.
  

So after a quick search in the docs I found this: https://jellyfin.org/docs/general/admini...orage/#nfs
which explains my issue to the spot!

Of course I use NFSv3 (dunno why ...)

Code:

$ mount
nuc-4:/mnt/Media/Media on /mnt/Media type nfs (rw,relatime,vers=3,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=192.168.1.171,mountvers=3,mountport=32767,mountproto=udp,local_lock=none,addr=192.168.1.171)

My next step will be changing the NFS version on the server side, remounting and retrying.