TrueNAS Score - Jellyfin

[TheDreadPirate]

"undertitle"? Do you mean subtitle? In live TV? Or just in general?

[Neurothiker]

...yes of course...the subtitle...sorry...
How can I deactivate the subtitle in general and individual.

Update:
I walked through:
Menue - user - edit - allow user to edit subtitle - ticked - saved
Went to user - edit - subtitle - set subtitle modus to no - saved

Subtitle still available in each IPTV-Stream...

[TheDreadPirate]

I don't believe you can disable a user's ability to view subtitles.

MAYBE you could use CSS to remove the web element that allows a user to select subtitles. But that would only be effective on clients that are web-wrappers.