#0  0x00000000 in ?? ()
#1  0xb7df16b4 in g_object_set_valist () from /usr/lib/libgobject-2.0.so.0
#2  0xb7df1946 in g_object_set () from /usr/lib/libgobject-2.0.so.0
#3  0xb6a9c097 in ?? () from /usr/lib/gstreamer-0.10/libgstplaybin.so
#4  0x0816ba00 in ?? ()
#5  0xb6aa53d2 in ?? () from /usr/lib/gstreamer-0.10/libgstplaybin.so
#6  0x00000000 in ?? ()