StacktraceTop:IA__g_type_check_instance_is_a ( IA__g_object_get (_object=0x7f0bbc25ef60, gst_play_sink_get_volume (playsink=0x2ed0050) gst_play_bin_get_property (object=0x2ed7620, IA__g_object_get_valist (object=0x2ed7620,
StacktraceTop: IA__g_type_ check_instance_ is_a ( 0x7f0bbc25ef60, sink_get_ volume (playsink= 0x2ed0050) bin_get_ property (object=0x2ed7620, get_valist (object=0x2ed7620,
IA__g_object_get (_object=
gst_play_
gst_play_
IA__g_object_