543     const gchar * factory_name, GstElementFactory * factory,  in _create_element()  argument
548   g_assert (!factory || !factory_name);  in _create_element()
550   if (factory_name) {  in _create_element()
551     elt = gst_element_factory_make (factory_name, element_name);  in _create_element()
553     factory_name =  in _create_element()
564           factory_name);  in _create_element()
569             ("no '%s' plugin found", factory_name));  in _create_element()
572             ("no '%s' plugin found", factory_name));  in _create_element()
576             ("can't instantiate '%s'", factory_name));  in _create_element()
579             ("can't instantiate '%s'", factory_name));  in _create_element()
591           ("failed to set '%s' to READY", factory_name));  in _create_element()
593       GST_WARNING_OBJECT (self, "Failed to set '%s' to READY", factory_name);  in _create_element()
603           ("failed to add '%s' to subtitleoverlay", factory_name));  in _create_element()
606           factory_name);  in _create_element()