Thanks to ad-n770 on the IRC. Needed to add a call to gst_element_sync_state_with_parent() after creating the app sink -- View this message in context: http://gstreamer-devel.966125.n4.nabble.com/Help-creating-element-after-decodebin-started-tp4658441p4658442.html Sent from the GStreamer-devel mailing list archive at Nabble.com.