Prefer mono over trivial (in case trivial somehow wants to work).

modules/audio_filter/channel_mixer/mono.c

@@ -112,7 +112,7 @@ static const uint32_t pi_channels_out[] =
  *****************************************************************************/
 vlc_module_begin();
     set_description( N_("Audio filter for stereo to mono conversion") );
-    set_capability( "audio filter2", 1 );
+    set_capability( "audio filter2", 2 );
 
     add_bool( MONO_CFG "downmix", true, NULL, MONO_DOWNMIX_TEXT,
               MONO_DOWNMIX_LONGTEXT, false );