../subprojects/gst-plugins-bad/ext/smoothstreaming/gstmssdemux.c: In function ‘gst_mss_demux_requires_periodical_playlist_update’:
../subprojects/gst-plugins-bad/ext/smoothstreaming/gstmssdemux.c:729:16: error: unused variable ‘mssdemux’ [-Werror=unused-variable]
   GstMssDemux *mssdemux = GST_MSS_DEMUX_CAST (demux);
                ^~~~~~~~
cc1: all warnings being treated as errors