make[1]: Leaving directory '/home/pi/build/tvheadend/master'
CC              src/transcoding/transcode/stream.o
src/transcoding/transcode/stream.c: In function ‘tvh_stream_setup’:
src/transcoding/transcode/stream.c:74:22: error: implicit declaration of function ‘avcodec_find_decoder_by_id’ [-Werror=implicit-function-declaration]
             icodec = avcodec_find_decoder_by_id("h264_mmal");
                      ^~~~~~~~~~~~~~~~~~~~~~~~~~
src/transcoding/transcode/stream.c:74:20: error: assignment makes pointer from integer without a cast [-Werror=int-conversion]
             icodec = avcodec_find_decoder_by_id("h264_mmal");
                    ^
src/transcoding/transcode/stream.c:76:20: error: assignment makes pointer from integer without a cast [-Werror=int-conversion]
             icodec = avcodec_find_decoder_by_id("mpeg2_mmal");
                    ^
cc1: all warnings being treated as errors
Makefile:688: recipe for target '/home/pi/build/tvheadend/master/build.linux/src/transcoding/transcode/stream.o' failed
make: *** [/home/pi/build/tvheadend/master/build.linux/src/transcoding/transcode/stream.o] Error 1