Tvheadend

it doesn't build:

CC src/timeshift/timeshift_filemgr.o
CC src/timeshift/timeshift_writer.o
CC src/timeshift/timeshift_reader.o
CC src/dvr/dvr_inotify.o
CC src/avahi.o
CC src/libav.o
CC src/muxer/muxer_libav.o
CC src/plumbing/transcoding.o
src/plumbing/transcoding.c: In function ‘transcoder_stream_video’:
src/plumbing/transcoding.c:1129:9: error: implicit declaration of function ‘av_dict_set_int’ [-Werror=implicit-function-declaration]
av_dict_set_int(&opts, "crf", (t->t_props.tp_vbitrate == 0 ? 15 : t->t_props.tp_vbitrate), 0);
^
cc1: all warnings being treated as errors
Makefile:441: recipe for target '/root/tvheadend/build.linux/src/plumbing/transcoding.o' failed
make²: * [/root/tvheadend/build.linux/src/plumbing/transcoding.o] Error 1
make²: Leaving directory '/root/tvheadend'
debian/rules:11: recipe for target 'override_dh_auto_build' failed
make¹: [override_dh_auto_build] Error 2
make¹: Leaving directory '/root/tvheadend'
debian/rules:5: recipe for target 'build' failed
make: ** [build] Error 2
dpkg-buildpackage: Fehler: Fehler-Exitstatus von debian/rules build war 2