LinDVB

LinDVB is a digital TV and radio app. It plays and records satellite, cable,
terrestrial and internet TV and radio using the Linux DVB API and GStreamer.
It has timeshift, timer and series recordings, a programme guide, teletext,
HbbTV, several tuners at once including Unicable/JESS, channel search and a
channel editor.
Suitable for DVB-S/S2, DVB-C, DVB-T/T2, ATSC, ISDB-T, DTMB. Ready for IPTV, Xtream, TVheadend, DVB-I, SAT>IP.

To use a DVB tuner, connect the dvb interface:
sudo snap connect lindvb:dvb