/usr/include/libdvben50221/ is in dvb-apps 1.1.1+rev1500-1.2.
This file is owned by root:root, with mode 0o755.
..
/usr/include/libdvben50221/asn_1.h
/usr/include/libdvben50221/en50221_app_ai.h
/usr/include/libdvben50221/en50221_app_auth.h
/usr/include/libdvben50221/en50221_app_ca.h
/usr/include/libdvben50221/en50221_app_datetime.h
/usr/include/libdvben50221/en50221_app_dvb.h
/usr/include/libdvben50221/en50221_app_epg.h
/usr/include/libdvben50221/en50221_app_lowspeed.h
/usr/include/libdvben50221/en50221_app_mmi.h
/usr/include/libdvben50221/en50221_app_rm.h
/usr/include/libdvben50221/en50221_app_smartcard.h
/usr/include/libdvben50221/en50221_app_tags.h
/usr/include/libdvben50221/en50221_app_teletext.h
/usr/include/libdvben50221/en50221_app_utils.h
/usr/include/libdvben50221/en50221_errno.h
/usr/include/libdvben50221/en50221_session.h
/usr/include/libdvben50221/en50221_stdcam.h
/usr/include/libdvben50221/en50221_transport.h