I recompile gst-plugins-base gst-plugins-good again.this problem disappear. very strange. -- View this message in context: http://gstreamer-devel.966125.n4.nabble.com/using-autoaudiosinkin-return-error-in-gstreamer-1-6-2-why-tp4675202p4675234.html Sent from the GStreamer-devel mailing list archive at Nabble.com.