<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 TRANSITIONAL//EN"> <HTML> <HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; CHARSET=UTF-8"> <META NAME="GENERATOR" CONTENT="GtkHTML/4.4.4"> </HEAD> <BODY> Le vendredi 07 décembre 2012 à 04:05 -0800, deepthips a écrit : <BLOCKQUOTE TYPE=CITE> <TT>From some links I saw to use gst_pad_get_parent instead of GST_PAD_PARENT.</TT> <TT>This solved the seg fault. But I am quite not sure how. All comments will</TT> <TT>be very helpful.</TT> </BLOCKQUOTE> The main difference is that gst_pad_get_parent() will return a reference on the object (you need to unref it when done). This prevent another thread from freeing the object while you are doing your operations. GST_PAD_PARENT() is normally used when the stream lock is taken, i.e. when the chain function is called. regards, Nicolas </BODY> </HTML>