I find Jellyfin to be a basic DVR nothing special no advanced passes and no Close Captions on Clients.
Advanced passes is a great feature ... I do not have to search for New shows to record in prime time ... I let the DVR do that.
Example My Prime-Time advanced pass...
Conditions
Tags == New
Title != SIGN OFF
Channel CONTAINS 2.1
Channel CONTAINS 6.1
Channel CONTAINS 8.1
Channel CONTAINS 12.1
Channel CONTAINS 32.1
Time CONTAINS 7pm
Time CONTAINS 8pm
Time CONTAINS 9pm
Time CONTAINS 10pm
Genres EXCLUDES News