#0  0xb701b0b4 in gst_caps_subtract (minuend=0x9b658e0, subtrahend=0x9c30640)
    at gstcaps.c:1376
	i = <value optimized out>
	j = <value optimized out>
	min = <value optimized out>
	sub = <value optimized out>
	dest = <value optimized out>
	src = <value optimized out>
	__PRETTY_FUNCTION__ = "gst_caps_subtract"
#1  0xb701b3a0 in gst_caps_is_subset (subset=0x9b658e0, superset=0x9c30640)
    at gstcaps.c:1056
	caps = <value optimized out>
	ret = <value optimized out>
	__PRETTY_FUNCTION__ = "gst_caps_is_subset"
#2  0xb701b41e in gst_caps_is_equal (caps1=0x9b658e0, caps2=0x9c30640)
    at gstcaps.c:1093
No locals.
#3  0xb703c716 in gst_pad_accept_caps (pad=0x9b9ad08, caps=0x9b658e0)
    at gstpad.c:2317
	result = <value optimized out>
	acceptfunc = <value optimized out>
	existing = <value optimized out>
	__PRETTY_FUNCTION__ = "gst_pad_accept_caps"
#4  0xb703cf4c in gst_pad_configure_src (pad=0x9b9ad08, caps=0x9b658e0, 
    dosetcaps=1) at gstpad.c:2502
	res = 163776064
	__PRETTY_FUNCTION__ = "gst_pad_configure_src"
#5  0xb703de32 in gst_pad_push (pad=0x9b9ad08, buffer=0x9bc94b8)
    at gstpad.c:4053
	peer = (GstPad *) 0x9bad6c8
	ret = <value optimized out>
	caps = (GstCaps *) 0x9b658e0
	caps_changed = 1
	__PRETTY_FUNCTION__ = "gst_pad_push"
#6  0xb702d31d in gst_proxy_pad_do_chain (pad=0x9ba9b80, buffer=0x9bc94b8)
    at gstghostpad.c:191
	res = GST_FLOW_OK
#7  0xb703cac5 in gst_pad_chain_unchecked (pad=0x9ba9b80, buffer=0x9bc94b8)
    at gstpad.c:3890
	caps = (GstCaps *) 0x9c0bb20
	caps_changed = <value optimized out>
	chainfunc = (GstPadChainFunction) 0xb702d2f0 <gst_proxy_pad_do_chain>
	ret = <value optimized out>
	__PRETTY_FUNCTION__ = "gst_pad_chain_unchecked"
#8  0xb703deba in gst_pad_push (pad=0x9bdb490, buffer=0x9bc94b8)
    at gstpad.c:4057
	peer = (GstPad *) 0x9ba9b80
	ret = <value optimized out>
	caps = (GstCaps *) 0x9c0bb20
	caps_changed = 0
	__PRETTY_FUNCTION__ = "gst_pad_push"
#9  0xb39461a2 in gst_queue_loop (pad=0x9bdb490) at gstqueue.c:1047
	queue = (GstQueue *) 0xb15f56e0
	ret = GST_FLOW_OK
	__PRETTY_FUNCTION__ = "gst_queue_loop"
#10 0xb705f593 in gst_task_func (task=0x9da2a40, tclass=0x9023860)
    at gsttask.c:192
	lock = (GStaticRecMutex *) 0xb1511ab8
	tself = (GThread *) 0xb1510b08
	__PRETTY_FUNCTION__ = "gst_task_func"
#11 0xb6e0b2d6 in g_thread_pool_thread_proxy (data=0x90238f0)
    at /build/buildd/glib2.0-2.19.5/glib/gthreadpool.c:265
	task = (gpointer) 0x9da2a40
	pool = (GRealThreadPool *) 0x90238f0
#12 0xb6e09c3f in g_thread_create_proxy (data=0xb1510b08)
    at /build/buildd/glib2.0-2.19.5/glib/gthread.c:635
	__PRETTY_FUNCTION__ = "g_thread_create_proxy"
#13 0xb7d554ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#14 0xb6cbe3fe in clone () from /lib/tls/i686/cmov/libc.so.6