gst_message_new_duration 3365 gst/gstbin.c         gst_message_new_duration (GST_OBJECT_CAST (bin), format, fold->max));
gst_message_new_duration  440 gst/gstmessage.h GstMessage *    gst_message_new_duration        (GstObject * src, GstFormat format, gint64 duration);