Hi Nicolas. Thanks so much for your helpful reply. I will take a look at the GstTypeFind API and give those functions a go! Cheers, Martin. -- View this message in context: http://gstreamer-devel.966125.n4.nabble.com/Autopluggable-Decryptor-Element-tp4665189p4665193.html Sent from the GStreamer-devel mailing list archive at Nabble.com.