We would seek on a NULL pad then, which gives ugly assertions.
https://bugzilla.gnome.org/show_bug.cgi?id=771843
GST_INFO_OBJECT (comp, "Seeking itself %" GST_PTR_FORMAT, event);
+ if (!peer) {
+ GST_ERROR_OBJECT (comp, "Can't seek because no pad available - "
+ "no children in the composition ready to be used, the duration is 0, "
+ "or not committed yet");
+ return FALSE;
+ }
+
if (flush_downstream) {
priv->flush_seqnum = gst_event_get_seqnum (event);
GST_INFO_OBJECT (comp, "sending flushes downstream with seqnum %d",