I did it g_object_set(G_OBJECT(appsrc),"format", GST_FORMAT_TIME, NULL); Do i have to use some other type instead ? -- View this message in context: http://gstreamer-devel.966125.n4.nabble.com/Appsrc-buffer-timestamping-problems-tp4682567p4682573.html Sent from the GStreamer-devel mailing list archive at Nabble.com.