+ /* Turn on a subtitles track if it has been flagged as default -
+ * but only do this if no subtitles track has already been engaged,
+ * either by an earlier 'default track' (??) or by default
+ * language choice behaviour.
+ */
+ if( tracks[i_track]->b_default )
+ {
+ es_out_Control( sys.demuxer.out,
+ ES_OUT_SET_DEFAULT,
+ tracks[i_track]->p_es );
+ }
+