GStreamer-CRITICAL **: gst_caps_is_fixed: assertion `GST_IS_CAPS (caps)' failed
aborting...

Program received signal SIGTRAP, Trace/breakpoint trap.
[Switching to Thread 0xb443cb90 (LWP 2562)]
IA__g_logv (log_domain=<value optimized out>, log_level=G_LOG_LEVEL_CRITICAL, 
    format=0xb7761aea "%s: assertion `%s' failed", 
    args1=0xb443b34c "\030�\206�J�\206�") at gmessages.c:502
502		  depth--;
(gdb) bt
#0  IA__g_logv (log_domain=<value optimized out>, 
    log_level=G_LOG_LEVEL_CRITICAL, 
    format=0xb7761aea "%s: assertion `%s' failed", 
    args1=0xb443b34c "\030�\206�J�\206�") at gmessages.c:502
#1  0xb7713764 in IA__g_log (log_domain=0xb6869358 "GStreamer", 
    log_level=G_LOG_LEVEL_CRITICAL, 
    format=0xb7761aea "%s: assertion `%s' failed") at gmessages.c:517
#2  0xb7713990 in IA__g_return_if_fail_warning (
    log_domain=0xb6869358 "GStreamer", 
    pretty_function=0xb686c118 "gst_caps_is_fixed", 
    expression=0xb686bc4a "GST_IS_CAPS (caps)") at gmessages.c:532
#3  0xb6804c3e in gst_caps_is_fixed (caps=0xa1f4300) at gstcaps.c:963
#4  0xb6806548 in gst_caps_is_equal (caps1=0xa1f4220, caps2=0xa1f4300)
    at gstcaps.c:1084
#5  0xb6826a35 in gst_pad_accept_caps (pad=0xa1b6c10, caps=0xa1f4220)
    at gstpad.c:2305
#6  0xb682792a in gst_pad_chain_unchecked (pad=0xa1b6c10, buffer=0xa86c6e8)
    at gstpad.c:2463
#7  0xb6827f42 in gst_pad_push (pad=0xa1b6b50, buffer=0xa86c6e8)
    at gstpad.c:4045
#8  0xb68a6908 in gst_base_transform_chain (pad=0xa1b6a90, buffer=0xa86c6e8)
    at gstbasetransform.c:1891
#9  0xb682787a in gst_pad_chain_unchecked (pad=0xa1b6a90, buffer=0xa86c6e8)
    at gstpad.c:3877
#10 0xb6827f42 in gst_pad_push (pad=0xa3119c0, buffer=0xa86c6e8)
    at gstpad.c:4045
---Type <return> to continue, or q <return> to quit---
#11 0xb681929a in gst_proxy_pad_do_chain (pad=0xa2d4b20, buffer=0xa86c6e8)
    at gstghostpad.c:207
#12 0xb682787a in gst_pad_chain_unchecked (pad=0xa2d4b20, buffer=0xa86c6e8)
    at gstpad.c:3877
#13 0xb6827f42 in gst_pad_push (pad=0xacf9d110, buffer=0xa86c6e8)
    at gstpad.c:4045
#14 0xb4ece884 in gst_basertppayload_push (payload=0xa31c308, buffer=0xa86c6e8)
    at gstbasertppayload.c:682
#15 0xb1add260 in gst_rtp_h264_pay_payload_nal (basepayload=0xa31c308, 
    data=0xa3a036d "gM@3\222T\n\017�\b\200", size=23, timestamp=35070740666)
    at gstrtph264pay.c:633
#16 0xb1add8ab in gst_rtp_h264_pay_handle_buffer (basepayload=0xa31c308, 
    buffer=0xb190fa40) at gstrtph264pay.c:814
#17 0xb4ecf7b2 in gst_basertppayload_chain (pad=0xacf9d1d0, buffer=0xb190fa40)
    at gstbasertppayload.c:399
#18 0xb682787a in gst_pad_chain_unchecked (pad=0xacf9d1d0, buffer=0xb190fa40)
    at gstpad.c:3877
#19 0xb6827f42 in gst_pad_push (pad=0xacf9d350, buffer=0xb190fa40)
    at gstpad.c:4045
#20 0xb1ab6feb in gst_x264_enc_encode_frame (encoder=0xa260e48, 
    pic_in=<value optimized out>, i_nal=0xb443ba74) at gstx264enc.c:884
#21 0xb1ab7473 in gst_x264_enc_chain (pad=0xacf9d290, buf=0xb1912050)
    at gstx264enc.c:776
#22 0xb682787a in gst_pad_chain_unchecked (pad=0xacf9d290, buffer=0xb1912050)
    at gstpad.c:3877
#23 0xb6827f42 in gst_pad_push (pad=0xacf9d4d0, buffer=0xb1912050)
---Type <return> to continue, or q <return> to quit---
    at gstpad.c:4045
#24 0xb68a6908 in gst_base_transform_chain (pad=0xacf9d410, buffer=0xb1912050)
    at gstbasetransform.c:1891
#25 0xb682787a in gst_pad_chain_unchecked (pad=0xacf9d410, buffer=0xb1912050)
    at gstpad.c:3877
#26 0xb6827f42 in gst_pad_push (pad=0xacf9d650, buffer=0xb1912050)
    at gstpad.c:4045
#27 0xb68a6908 in gst_base_transform_chain (pad=0xacf9d590, buffer=0xb1912050)
    at gstbasetransform.c:1891
#28 0xb682787a in gst_pad_chain_unchecked (pad=0xacf9d590, buffer=0xb1912050)
    at gstpad.c:3877
#29 0xb6827f42 in gst_pad_push (pad=0xb191d008, buffer=0xb1912050)
    at gstpad.c:4045
#30 0xb68a6908 in gst_base_transform_chain (pad=0xacf9d710, buffer=0xb1912050)
    at gstbasetransform.c:1891
#31 0xb682787a in gst_pad_chain_unchecked (pad=0xacf9d710, buffer=0xb1912050)
    at gstpad.c:3877
#32 0xb6827f42 in gst_pad_push (pad=0xa2d4be8, buffer=0xb1912050)
    at gstpad.c:4045
#33 0xb681929a in gst_proxy_pad_do_chain (pad=0xa311aa0, buffer=0xb1912050)
    at gstghostpad.c:207
#34 0xb682787a in gst_pad_chain_unchecked (pad=0xa311aa0, buffer=0xb1912050)
    at gstpad.c:3877
#35 0xb6827f42 in gst_pad_push (pad=0xa1a5240, buffer=0xb1912050)
    at gstpad.c:4045
#36 0xb4ebf80d in gst_valve_chain (pad=0xa1a5300, buffer=0xb1912050)
---Type <return> to continue, or q <return> to quit---
    at gstvalve.c:200
#37 0xb682787a in gst_pad_chain_unchecked (pad=0xa1a5300, buffer=0xb1912050)
    at gstpad.c:3877
#38 0xb6827f42 in gst_pad_push (pad=0xa1a5180, buffer=0xb1912050)
    at gstpad.c:4045
#39 0xb4cf9cf1 in gst_tee_handle_buffer (tee=0xa178970, buffer=0xb1912050)
    at gsttee.c:522
#40 0xb4cfa22f in gst_tee_chain (pad=0xa1a5000, buffer=0xb1912050)
    at gsttee.c:641
#41 0xb682787a in gst_pad_chain_unchecked (pad=0xa1a5000, buffer=0xb1912050)
    at gstpad.c:3877
#42 0xb6827f42 in gst_pad_push (pad=0xa17d190, buffer=0xb1912050)
    at gstpad.c:4045
#43 0xb681929a in gst_proxy_pad_do_chain (pad=0xa1a58e0, buffer=0xb1912050)
    at gstghostpad.c:207
#44 0xb682787a in gst_pad_chain_unchecked (pad=0xa1a58e0, buffer=0xb1912050)
    at gstpad.c:3877
#45 0xb6827f42 in gst_pad_push (pad=0xa1b6d90, buffer=0xb1912050)
    at gstpad.c:4045
#46 0xb4cf6820 in gst_queue_loop (pad=0xa1b6d90) at gstqueue.c:1047
#47 0xb6846e6f in gst_task_func (task=0xa16d690, tclass=0x9e9a828)
    at gsttask.c:192
#48 0xb77327c7 in g_thread_pool_thread_proxy (data=0x9e9a8b8)
    at gthreadpool.c:265
#49 0xb7730eb9 in g_thread_create_proxy (data=0xb3b005c8) at gthread.c:635
#50 0xb7e4f17b in start_thread (arg=0xb443cb90) at pthread_create.c:296
---Type <return> to continue, or q <return> to quit---
#51 0xb7dad09e in clone () from /lib/libc.so.6
(gdb) 
(gdb) thread apply all bt

Thread 24 (Thread 0xa972ab90 (LWP 2600)):
#0  0xffffe424 in __kernel_vsyscall ()
#1  0xb7e567e6 in nanosleep () from /lib/libpthread.so.0
#2  0xb773303b in IA__g_usleep (microseconds=100000) at gtimer.c:170
#3  0xb1866c1c in gst_ximagesink_event_thread (ximagesink=0xa2fc2a8)
    at ximagesink.c:1098
#4  0xb7730eb9 in g_thread_create_proxy (data=0xa4f8ae8) at gthread.c:635
#5  0xb7e4f17b in start_thread (arg=0xa972ab90) at pthread_create.c:296
#6  0xb7dad09e in clone () from /lib/libc.so.6

Thread 22 (Thread 0xaa72cb90 (LWP 2598)):
#0  0xffffe424 in __kernel_vsyscall ()
#1  0xb7da3ca3 in *__GI___poll (fds=0xb7e17ff4, nfds=1, timeout=-1)
    at ../sysdeps/unix/sysv/linux/poll.c:87
#2  0xad38611e in ?? () from /usr/lib/libasound.so.2
#3  0xaa72c1c0 in ?? ()
#4  0x00000001 in ?? ()
#5  0xffffffff in ?? ()
#6  0xad391e3f in ?? () from /usr/lib/libasound.so.2
#7  0x0a30fb48 in ?? ()
#8  0xad3e7ff4 in ?? () from /usr/lib/libasound.so.2
#9  0xaa72c1b8 in ?? ()
#10 0xad381484 in snd_pcm_poll_descriptors_count ()
   from /usr/lib/libasound.so.2
#11 0xad386284 in snd_pcm_wait () from /usr/lib/libasound.so.2
---Type <return> to continue, or q <return> to quit---
#12 0xad386474 in ?? () from /usr/lib/libasound.so.2
#13 0x0a2d63f8 in ?? ()
#14 0xffffffff in ?? ()
#15 0x00000000 in ?? ()

Thread 21 (Thread 0xaaf2db90 (LWP 2597)):
#0  0xffffe424 in __kernel_vsyscall ()
#1  0xb7e567e6 in nanosleep () from /lib/libpthread.so.0
#2  0xb773303b in IA__g_usleep (microseconds=100000) at gtimer.c:170
#3  0xb1866c1c in gst_ximagesink_event_thread (ximagesink=0xa2fc000)
    at ximagesink.c:1098
#4  0xb7730eb9 in g_thread_create_proxy (data=0xa30fa70) at gthread.c:635
#5  0xb7e4f17b in start_thread (arg=0xaaf2db90) at pthread_create.c:296
#6  0xb7dad09e in clone () from /lib/libc.so.6

Thread 19 (Thread 0xac4ffb90 (LWP 2587)):
#0  0xffffe424 in __kernel_vsyscall ()
#1  0xb7e53566 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0xb4d18f88 in gst_rtp_jitter_buffer_loop (jitterbuffer=0xa2db5c8)
    at gstrtpjitterbuffer.c:1072
#3  0xb6846e6f in gst_task_func (task=0xb140be48, tclass=0x9e9a828)
    at gsttask.c:192
#4  0xb77327c7 in g_thread_pool_thread_proxy (data=0x9e9a8b8)
    at gthreadpool.c:265
#5  0xb7730eb9 in g_thread_create_proxy (data=0xa300e18) at gthread.c:635
#6  0xb7e4f17b in start_thread (arg=0xac4ffb90) at pthread_create.c:296
---Type <return> to continue, or q <return> to quit---
#7  0xb7dad09e in clone () from /lib/libc.so.6

Thread 18 (Thread 0xaceffb90 (LWP 2585)):
#0  0xffffe424 in __kernel_vsyscall ()
#1  0xb7e53566 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0xb1a24791 in wait_segment (buf=0xb1904000) at gstringbuffer.c:1215
#3  0xb1a24e8a in gst_ring_buffer_commit_full (buf=0xb1904000, 
    sample=0xacefee48, data=0xb3b75550 "��", in_samples=18, out_samples=18, 
    accum=0xacefee64) at gstringbuffer.c:1453
#4  0xb1a1a72f in gst_base_audio_sink_render (bsink=0xa306190, buf=0xa86c5f8)
    at gstbaseaudiosink.c:1428
#5  0xb6892fb3 in gst_base_sink_render_object (basesink=0xa306190, 
    pad=0xb19224e0, obj=0xa86c5f8) at gstbasesink.c:2189
#6  0xb6894a45 in gst_base_sink_queue_object_unlocked (basesink=0xa306190, 
    pad=0xb19224e0, obj=0xa86c5f8, prerollable=1) at gstbasesink.c:2384
#7  0xb68950ad in gst_base_sink_chain_unlocked (basesink=0xa306190, 
    pad=0xb19224e0, buf=0xa86c5f8) at gstbasesink.c:2728
#8  0xb6895725 in gst_base_sink_chain (pad=0xb19224e0, buf=0xa86c5f8)
    at gstbasesink.c:2769
#9  0xb682787a in gst_pad_chain_unchecked (pad=0xb19224e0, buffer=0xa86c5f8)
    at gstpad.c:3877
#10 0xb6827f42 in gst_pad_push (pad=0xb19225a0, buffer=0xa86c5f8)
    at gstpad.c:4045
#11 0xb181e749 in gst_live_adder_loop (data=0xb19228e0) at gstliveadder.c:1321
#12 0xb6846e6f in gst_task_func (task=0xb140be98, tclass=0x9e9a828)
    at gsttask.c:192
---Type <return> to continue, or q <return> to quit---
#13 0xb77327c7 in g_thread_pool_thread_proxy (data=0x9e9a8b8)
    at gthreadpool.c:265
#14 0xb7730eb9 in g_thread_create_proxy (data=0xa2caa50) at gthread.c:635
#15 0xb7e4f17b in start_thread (arg=0xaceffb90) at pthread_create.c:296
#16 0xb7dad09e in clone () from /lib/libc.so.6

Thread 16 (Thread 0xae3ecb90 (LWP 2581)):
#0  0xffffe424 in __kernel_vsyscall ()
#1  0xb7e53566 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0xb4d18f88 in gst_rtp_jitter_buffer_loop (jitterbuffer=0xa2db008)
    at gstrtpjitterbuffer.c:1072
#3  0xb6846e6f in gst_task_func (task=0xb3b88b70, tclass=0x9e9a828)
    at gsttask.c:192
#4  0xb77327c7 in g_thread_pool_thread_proxy (data=0x9e9a8b8)
    at gthreadpool.c:265
#5  0xb7730eb9 in g_thread_create_proxy (data=0xa256280) at gthread.c:635
#6  0xb7e4f17b in start_thread (arg=0xae3ecb90) at pthread_create.c:296
#7  0xb7dad09e in clone () from /lib/libc.so.6

Thread 15 (Thread 0xaebedb90 (LWP 2577)):
#0  0xffffe424 in __kernel_vsyscall ()
#1  0xb7e53566 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0xb76e7a12 in g_async_queue_pop_intern_unlocked (queue=0xa2a2620, 
    try=<value optimized out>, end_time=0x0) at gasyncqueue.c:358
#3  0xb76e7d5c in IA__g_async_queue_pop (queue=0xa2a2620) at gasyncqueue.c:398
#4  0xb18724da in gst_rtp_dtmf_src_create (basesrc=0xa2a40e0, 
---Type <return> to continue, or q <return> to quit---
    offset=18446744073709551615, length=4096, buffer=0xaebed2d4)
    at gstrtpdtmfsrc.c:688
#5  0xb689acc0 in gst_base_src_get_range (src=0xa2a40e0, 
    offset=18446744073709551615, length=4096, buf=0xaebed2d4)
    at gstbasesrc.c:1854
#6  0xb689ec51 in gst_base_src_loop (pad=0xa276c98) at gstbasesrc.c:2094
#7  0xb6846e6f in gst_task_func (task=0xa16d5f0, tclass=0x9e9a828)
    at gsttask.c:192
#8  0xb77327c7 in g_thread_pool_thread_proxy (data=0x9e9a8b8)
    at gthreadpool.c:265
#9  0xb7730eb9 in g_thread_create_proxy (data=0xa2a2fd8) at gthread.c:635
#10 0xb7e4f17b in start_thread (arg=0xaebedb90) at pthread_create.c:296
#11 0xb7dad09e in clone () from /lib/libc.so.6

Thread 14 (Thread 0xaf3eeb90 (LWP 2576)):
#0  0xffffe424 in __kernel_vsyscall ()
#1  0xb7e53566 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0xb76e7a12 in g_async_queue_pop_intern_unlocked (queue=0xa26bd60, 
    try=<value optimized out>, end_time=0x0) at gasyncqueue.c:358
#3  0xb76e7d5c in IA__g_async_queue_pop (queue=0xa26bd60) at gasyncqueue.c:398
#4  0xb186ff0f in gst_dtmf_src_create (basesrc=0xa29e020, 
    offset=18446744073709551615, length=4096, buffer=0xaf3ee2d4)
    at gstdtmfsrc.c:646
#5  0xb689acc0 in gst_base_src_get_range (src=0xa29e020, 
    offset=18446744073709551615, length=4096, buf=0xaf3ee2d4)
    at gstbasesrc.c:1854
---Type <return> to continue, or q <return> to quit---
#6  0xb689ec51 in gst_base_src_loop (pad=0xa272d68) at gstbasesrc.c:2094
#7  0xb6846e6f in gst_task_func (task=0xa16d730, tclass=0x9e9a828)
    at gsttask.c:192
#8  0xb77327c7 in g_thread_pool_thread_proxy (data=0x9e9a8b8)
    at gthreadpool.c:265
#9  0xb7730eb9 in g_thread_create_proxy (data=0xa29fad8) at gthread.c:635
#10 0xb7e4f17b in start_thread (arg=0xaf3eeb90) at pthread_create.c:296
#11 0xb7dad09e in clone () from /lib/libc.so.6

Thread 13 (Thread 0xafbefb90 (LWP 2574)):
#0  0xffffe424 in __kernel_vsyscall ()
#1  0xb7da3e80 in ppoll (fds=0xa25f788, nfds=2, timeout=0x0, sigmask=0x0)
    at ../sysdeps/unix/sysv/linux/ppoll.c:55
#2  0xb6834022 in gst_poll_wait (set=0xa24bf20, timeout=18446744073709551615)
    at gstpoll.c:1086
#3  0xb1a48232 in gst_udpsrc_create (psrc=0xa250f58, buf=0xafbef2d4)
    at gstudpsrc.c:425
#4  0xb68aa9b5 in gst_push_src_create (bsrc=0xa250f58, 
    offset=18446744073709551615, length=4096, ret=0xafbef2d4)
    at gstpushsrc.c:117
#5  0xb689acc0 in gst_base_src_get_range (src=0xa250f58, 
    offset=18446744073709551615, length=4096, buf=0xafbef2d4)
    at gstbasesrc.c:1854
#6  0xb689ec51 in gst_base_src_loop (pad=0xb3b890f8) at gstbasesrc.c:2094
#7  0xb6846e6f in gst_task_func (task=0x9e86648, tclass=0x9e9a828)
    at gsttask.c:192
---Type <return> to continue, or q <return> to quit---
#8  0xb77327c7 in g_thread_pool_thread_proxy (data=0x9e9a8b8)
    at gthreadpool.c:265
#9  0xb7730eb9 in g_thread_create_proxy (data=0xb3b87870) at gthread.c:635
#10 0xb7e4f17b in start_thread (arg=0xafbefb90) at pthread_create.c:296
#11 0xb7dad09e in clone () from /lib/libc.so.6

Thread 12 (Thread 0xb03f0b90 (LWP 2573)):
#0  0xffffe424 in __kernel_vsyscall ()
#1  0xb7da3e80 in ppoll (fds=0xa24ec08, nfds=2, timeout=0x0, sigmask=0x0)
    at ../sysdeps/unix/sysv/linux/ppoll.c:55
#2  0xb6834022 in gst_poll_wait (set=0xa24bef0, timeout=18446744073709551615)
    at gstpoll.c:1086
#3  0xb1a48232 in gst_udpsrc_create (psrc=0xa250a68, buf=0xb03f02d4)
    at gstudpsrc.c:425
#4  0xb68aa9b5 in gst_push_src_create (bsrc=0xa250a68, 
    offset=18446744073709551615, length=4096, ret=0xb03f02d4)
    at gstpushsrc.c:117
#5  0xb689acc0 in gst_base_src_get_range (src=0xa250a68, 
    offset=18446744073709551615, length=4096, buf=0xb03f02d4)
    at gstbasesrc.c:1854
#6  0xb689ec51 in gst_base_src_loop (pad=0xb1404548) at gstbasesrc.c:2094
#7  0xb6846e6f in gst_task_func (task=0x9e86788, tclass=0x9e9a828)
    at gsttask.c:192
#8  0xb77327c7 in g_thread_pool_thread_proxy (data=0x9e9a8b8)
    at gthreadpool.c:265
#9  0xb7730eb9 in g_thread_create_proxy (data=0xb140ad80) at gthread.c:635
---Type <return> to continue, or q <return> to quit---
#10 0xb7e4f17b in start_thread (arg=0xb03f0b90) at pthread_create.c:296
#11 0xb7dad09e in clone () from /lib/libc.so.6

Thread 11 (Thread 0xb0bf1b90 (LWP 2572)):
#0  0xffffe424 in __kernel_vsyscall ()
#1  0xb7da3e80 in ppoll (fds=0xa25c9e8, nfds=2, timeout=0x0, sigmask=0x0)
    at ../sysdeps/unix/sysv/linux/ppoll.c:55
#2  0xb6834022 in gst_poll_wait (set=0xa24bd20, timeout=18446744073709551615)
    at gstpoll.c:1086
#3  0xb1a48232 in gst_udpsrc_create (psrc=0xa250578, buf=0xb0bf12d4)
    at gstudpsrc.c:425
#4  0xb68aa9b5 in gst_push_src_create (bsrc=0xa250578, 
    offset=18446744073709551615, length=4096, ret=0xb0bf12d4)
    at gstpushsrc.c:117
#5  0xb689acc0 in gst_base_src_get_range (src=0xa250578, 
    offset=18446744073709551615, length=4096, buf=0xb0bf12d4)
    at gstbasesrc.c:1854
#6  0xb689ec51 in gst_base_src_loop (pad=0xa24f0e8) at gstbasesrc.c:2094
#7  0xb6846e6f in gst_task_func (task=0xa16d460, tclass=0x9e9a828)
    at gsttask.c:192
#8  0xb77327c7 in g_thread_pool_thread_proxy (data=0x9e9a8b8)
    at gthreadpool.c:265
#9  0xb7730eb9 in g_thread_create_proxy (data=0xb3b0da60) at gthread.c:635
#10 0xb7e4f17b in start_thread (arg=0xb0bf1b90) at pthread_create.c:296
#11 0xb7dad09e in clone () from /lib/libc.so.6

---Type <return> to continue, or q <return> to quit---
Thread 10 (Thread 0xb13f2b90 (LWP 2571)):
#0  0xffffe424 in __kernel_vsyscall ()
#1  0xb7da3e80 in ppoll (fds=0xa25c9d0, nfds=2, timeout=0x0, sigmask=0x0)
    at ../sysdeps/unix/sysv/linux/ppoll.c:55
#2  0xb6834022 in gst_poll_wait (set=0xa24bcf0, timeout=18446744073709551615)
    at gstpoll.c:1086
#3  0xb1a48232 in gst_udpsrc_create (psrc=0xa250088, buf=0xb13f22d4)
    at gstudpsrc.c:425
#4  0xb68aa9b5 in gst_push_src_create (bsrc=0xa250088, 
    offset=18446744073709551615, length=4096, ret=0xb13f22d4)
    at gstpushsrc.c:117
#5  0xb689acc0 in gst_base_src_get_range (src=0xa250088, 
    offset=18446744073709551615, length=4096, buf=0xb13f22d4)
    at gstbasesrc.c:1854
#6  0xb689ec51 in gst_base_src_loop (pad=0xa246f08) at gstbasesrc.c:2094
#7  0xb6846e6f in gst_task_func (task=0x9e865a8, tclass=0x9e9a828)
    at gsttask.c:192
#8  0xb77327c7 in g_thread_pool_thread_proxy (data=0x9e9a8b8)
    at gthreadpool.c:265
#9  0xb7730eb9 in g_thread_create_proxy (data=0xa2524d8) at gthread.c:635
#10 0xb7e4f17b in start_thread (arg=0xb13f2b90) at pthread_create.c:296
#11 0xb7dad09e in clone () from /lib/libc.so.6

Thread 9 (Thread 0xb22fcb90 (LWP 2566)):
#0  0xffffe424 in __kernel_vsyscall ()
#1  0xb7e537ec in pthread_cond_timedwait@@GLIBC_2.3.2 ()
---Type <return> to continue, or q <return> to quit---
   from /lib/libpthread.so.0
#2  0xb79ab01f in g_cond_timed_wait_posix_impl (cond=0x0, 
    entered_mutex=0x9ea6488, abs_time=0x199c) at gthread-posix.c:242
#3  0xb6841316 in gst_system_clock_id_wait_jitter_unlocked (clock=0xa17d000, 
    entry=0xa0f43b8, jitter=0x0, restart=1) at gstsystemclock.c:405
#4  0xb684193d in gst_system_clock_id_wait_jitter (clock=0xa17d000, 
    entry=0xa0f43b8, jitter=0x0) at gstsystemclock.c:455
#5  0xb6809c97 in gst_clock_id_wait (id=0xa0f43b8, jitter=0x0)
    at gstclock.c:385
#6  0xb4d2bc83 in rtcp_thread (rtpsession=0xa198248) at gstrtpsession.c:916
#7  0xb7730eb9 in g_thread_create_proxy (data=0xb3b06fc8) at gthread.c:635
#8  0xb7e4f17b in start_thread (arg=0xb22fcb90) at pthread_create.c:296
#9  0xb7dad09e in clone () from /lib/libc.so.6

Thread 8 (Thread 0xb2afdb90 (LWP 2565)):
#0  0xffffe424 in __kernel_vsyscall ()
#1  0xb7e537ec in pthread_cond_timedwait@@GLIBC_2.3.2 ()
   from /lib/libpthread.so.0
#2  0xb79ab01f in g_cond_timed_wait_posix_impl (cond=0x0, 
    entered_mutex=0x9ea6488, abs_time=0x1a51) at gthread-posix.c:242
#3  0xb6841316 in gst_system_clock_id_wait_jitter_unlocked (clock=0xa17d000, 
    entry=0xa0ebcf0, jitter=0x0, restart=1) at gstsystemclock.c:405
#4  0xb684193d in gst_system_clock_id_wait_jitter (clock=0xa17d000, 
    entry=0xa0ebcf0, jitter=0x0) at gstsystemclock.c:455
#5  0xb6809c97 in gst_clock_id_wait (id=0xa0ebcf0, jitter=0x0)
    at gstclock.c:385
---Type <return> to continue, or q <return> to quit---
#6  0xb4d2bc83 in rtcp_thread (rtpsession=0xa1983c0) at gstrtpsession.c:916
#7  0xb7730eb9 in g_thread_create_proxy (data=0xb3b00f30) at gthread.c:635
#8  0xb7e4f17b in start_thread (arg=0xb2afdb90) at pthread_create.c:296
#9  0xb7dad09e in clone () from /lib/libc.so.6

Thread 7 (Thread 0xb32feb90 (LWP 2564)):
#0  0xffffe424 in __kernel_vsyscall ()
#1  0xb7da3ca3 in *__GI___poll (fds=0xb7e17ff4, nfds=1, timeout=-1)
    at ../sysdeps/unix/sysv/linux/poll.c:87
#2  0xb6fb36f6 in ?? () from /usr/lib/libX11.so.6
#3  0x0a4f8dc0 in ?? ()
#4  0x00000001 in ?? ()
#5  0xffffffff in ?? ()
#6  0xb6fbbf64 in _X11TransWrite () from /usr/lib/libX11.so.6
#7  0xb6fb3af0 in _XRead () from /usr/lib/libX11.so.6
#8  0xb6fb4421 in _XReply () from /usr/lib/libX11.so.6
#9  0xb6fae84a in XSync () from /usr/lib/libX11.so.6
#10 0xb1866489 in gst_ximagesink_ximage_put (ximagesink=0xa2fc2a8, 
    ximage=<value optimized out>) at ximagesink.c:759
#11 0xb1868c1d in gst_ximagesink_show_frame (bsink=0xa2fc2a8, buf=0xa20ba78)
    at ximagesink.c:1593
#12 0xb689302d in gst_base_sink_render_object (basesink=0xa2fc2a8, 
    pad=0xa1d0a60, obj=0xa20ba78) at gstbasesink.c:2189
#13 0xb6894a45 in gst_base_sink_queue_object_unlocked (basesink=0xa2fc2a8, 
    pad=0xa1d0a60, obj=0xa20ba78, prerollable=1) at gstbasesink.c:2384
#14 0xb68950ad in gst_base_sink_chain_unlocked (basesink=0xa2fc2a8, 
---Type <return> to continue, or q <return> to quit---
    pad=0xa1d0a60, buf=0xa20ba78) at gstbasesink.c:2728
#15 0xb6895725 in gst_base_sink_chain (pad=0xa1d0a60, buf=0xa20ba78)
    at gstbasesink.c:2769
#16 0xb682787a in gst_pad_chain_unchecked (pad=0xa1d0a60, buffer=0xa20ba78)
    at gstpad.c:3877
#17 0xb6827f42 in gst_pad_push (pad=0xa1d09a0, buffer=0xa20ba78)
    at gstpad.c:4045
#18 0xb68a6908 in gst_base_transform_chain (pad=0xa1d0b20, buffer=0xb3b6a6e8)
    at gstbasetransform.c:1891
#19 0xb682787a in gst_pad_chain_unchecked (pad=0xa1d0b20, buffer=0xb3b6a6e8)
    at gstpad.c:3877
#20 0xb6827f42 in gst_pad_push (pad=0xa31f308, buffer=0xb3b6a6e8)
    at gstpad.c:4045
#21 0xb68a6908 in gst_base_transform_chain (pad=0xa1d0be0, buffer=0xb3b6a648)
    at gstbasetransform.c:1891
#22 0xb682787a in gst_pad_chain_unchecked (pad=0xa1d0be0, buffer=0xb3b6a648)
    at gstpad.c:3877
#23 0xb6827f42 in gst_pad_push (pad=0xa2a03f8, buffer=0xb3b6a648)
    at gstpad.c:4045
#24 0xb681929a in gst_proxy_pad_do_chain (pad=0xa1c6f00, buffer=0xb3b6a648)
    at gstghostpad.c:207
#25 0xb682787a in gst_pad_chain_unchecked (pad=0xa1c6f00, buffer=0xb3b6a648)
    at gstpad.c:3877
#26 0xb6827f42 in gst_pad_push (pad=0xa31f3c8, buffer=0xb3b6a648)
    at gstpad.c:4045
#27 0xb4cf9cf1 in gst_tee_handle_buffer (tee=0xa1788b8, buffer=0xb3b6a648)
---Type <return> to continue, or q <return> to quit---
    at gsttee.c:522
#28 0xb4cfa22f in gst_tee_chain (pad=0xa0b50d0, buffer=0xb3b6a648)
    at gsttee.c:641
#29 0xb682787a in gst_pad_chain_unchecked (pad=0xa0b50d0, buffer=0xb3b6a648)
    at gstpad.c:3877
#30 0xb6827f42 in gst_pad_push (pad=0xa1a5800, buffer=0xb3b6a648)
    at gstpad.c:4045
#31 0xb681929a in gst_proxy_pad_do_chain (pad=0xa17d0c8, buffer=0xb3b6a648)
    at gstghostpad.c:207
#32 0xb682787a in gst_pad_chain_unchecked (pad=0xa17d0c8, buffer=0xb3b6a648)
    at gstpad.c:3877
#33 0xb6827f42 in gst_pad_push (pad=0xa0b56d0, buffer=0xb3b6a648)
    at gstpad.c:4045
#34 0xb68a6908 in gst_base_transform_chain (pad=0xa0b5610, buffer=0xb3b6a648)
    at gstbasetransform.c:1891
#35 0xb682787a in gst_pad_chain_unchecked (pad=0xa0b5610, buffer=0xb3b6a648)
    at gstpad.c:3877
#36 0xb6827f42 in gst_pad_push (pad=0xa0b5550, buffer=0xb3b6a648)
    at gstpad.c:4045
#37 0xb68a6908 in gst_base_transform_chain (pad=0xa0b5490, buffer=0xb3b6a648)
    at gstbasetransform.c:1891
#38 0xb682787a in gst_pad_chain_unchecked (pad=0xa0b5490, buffer=0xb3b6a648)
    at gstpad.c:3877
#39 0xb6827f42 in gst_pad_push (pad=0xa0b53d0, buffer=0xb3b6a648)
    at gstpad.c:4045
#40 0xb4cce16a in gst_text_overlay_push_frame (overlay=0xa1980d0, 
---Type <return> to continue, or q <return> to quit---
    video_frame=0xb3b6a648) at gsttextoverlay.c:1107
#41 0xb4ccf529 in gst_text_overlay_video_chain (pad=0xa0b5310, 
    buffer=0xb3b6a648) at gsttextoverlay.c:1496
#42 0xb682787a in gst_pad_chain_unchecked (pad=0xa0b5310, buffer=0xb3b6a648)
    at gstpad.c:3877
#43 0xb6827f42 in gst_pad_push (pad=0xa0b5250, buffer=0xb3b6a648)
    at gstpad.c:4045
#44 0xb689ed56 in gst_base_src_loop (pad=0xa0b5250) at gstbasesrc.c:2187
#45 0xb6846e6f in gst_task_func (task=0x9e864b8, tclass=0x9e9a828)
    at gsttask.c:192
#46 0xb77327c7 in g_thread_pool_thread_proxy (data=0x9e9a8b8)
    at gthreadpool.c:265
#47 0xb7730eb9 in g_thread_create_proxy (data=0xb3b05170) at gthread.c:635
#48 0xb7e4f17b in start_thread (arg=0xb32feb90) at pthread_create.c:296
#49 0xb7dad09e in clone () from /lib/libc.so.6

Thread 6 (Thread 0xb3affb90 (LWP 2563)):
#0  0xffffe424 in __kernel_vsyscall ()
#1  0xb7e537ec in pthread_cond_timedwait@@GLIBC_2.3.2 ()
   from /lib/libpthread.so.0
#2  0xb79ab01f in g_cond_timed_wait_posix_impl (cond=0x0, 
    entered_mutex=0x9ea6488, abs_time=0x1a85) at gthread-posix.c:242
#3  0xb6841316 in gst_system_clock_id_wait_jitter_unlocked (clock=0xa17d000, 
    entry=0xa1da318, jitter=0x0, restart=1) at gstsystemclock.c:405
#4  0xb684193d in gst_system_clock_id_wait_jitter (clock=0xa17d000, 
    entry=0xa1da318, jitter=0x0) at gstsystemclock.c:455
---Type <return> to continue, or q <return> to quit---
#5  0xb6809c97 in gst_clock_id_wait (id=0xa1da318, jitter=0x0)
    at gstclock.c:385
#6  0xb689af3c in gst_base_src_get_range (src=0xa1c2400, 
    offset=18446744073709551615, length=4096, buf=0xb3aff2d4)
    at gstbasesrc.c:1573
#7  0xb689ec51 in gst_base_src_loop (pad=0xa1c0850) at gstbasesrc.c:2094
#8  0xb6846e6f in gst_task_func (task=0xa16d818, tclass=0x9e9a828)
    at gsttask.c:192
#9  0xb77327c7 in g_thread_pool_thread_proxy (data=0x9e9a8b8)
    at gthreadpool.c:265
#10 0xb7730eb9 in g_thread_create_proxy (data=0xb3b00f08) at gthread.c:635
#11 0xb7e4f17b in start_thread (arg=0xb3affb90) at pthread_create.c:296
#12 0xb7dad09e in clone () from /lib/libc.so.6

Thread 5 (Thread 0xb443cb90 (LWP 2562)):
#0  IA__g_logv (log_domain=<value optimized out>, 
    log_level=G_LOG_LEVEL_CRITICAL, 
    format=0xb7761aea "%s: assertion `%s' failed", 
    args1=0xb443b34c "\030�\206�J�\206�") at gmessages.c:502
#1  0xb7713764 in IA__g_log (log_domain=0xb6869358 "GStreamer", 
    log_level=G_LOG_LEVEL_CRITICAL, 
    format=0xb7761aea "%s: assertion `%s' failed") at gmessages.c:517
#2  0xb7713990 in IA__g_return_if_fail_warning (
    log_domain=0xb6869358 "GStreamer", 
    pretty_function=0xb686c118 "gst_caps_is_fixed", 
    expression=0xb686bc4a "GST_IS_CAPS (caps)") at gmessages.c:532
---Type <return> to continue, or q <return> to quit---
#3  0xb6804c3e in gst_caps_is_fixed (caps=0xa1f4300) at gstcaps.c:963
#4  0xb6806548 in gst_caps_is_equal (caps1=0xa1f4220, caps2=0xa1f4300)
    at gstcaps.c:1084
#5  0xb6826a35 in gst_pad_accept_caps (pad=0xa1b6c10, caps=0xa1f4220)
    at gstpad.c:2305
#6  0xb682792a in gst_pad_chain_unchecked (pad=0xa1b6c10, buffer=0xa86c6e8)
    at gstpad.c:2463
#7  0xb6827f42 in gst_pad_push (pad=0xa1b6b50, buffer=0xa86c6e8)
    at gstpad.c:4045
#8  0xb68a6908 in gst_base_transform_chain (pad=0xa1b6a90, buffer=0xa86c6e8)
    at gstbasetransform.c:1891
#9  0xb682787a in gst_pad_chain_unchecked (pad=0xa1b6a90, buffer=0xa86c6e8)
    at gstpad.c:3877
#10 0xb6827f42 in gst_pad_push (pad=0xa3119c0, buffer=0xa86c6e8)
    at gstpad.c:4045
#11 0xb681929a in gst_proxy_pad_do_chain (pad=0xa2d4b20, buffer=0xa86c6e8)
    at gstghostpad.c:207
#12 0xb682787a in gst_pad_chain_unchecked (pad=0xa2d4b20, buffer=0xa86c6e8)
    at gstpad.c:3877
#13 0xb6827f42 in gst_pad_push (pad=0xacf9d110, buffer=0xa86c6e8)
    at gstpad.c:4045
#14 0xb4ece884 in gst_basertppayload_push (payload=0xa31c308, buffer=0xa86c6e8)
    at gstbasertppayload.c:682
#15 0xb1add260 in gst_rtp_h264_pay_payload_nal (basepayload=0xa31c308, 
    data=0xa3a036d "gM@3\222T\n\017�\b\200", size=23, timestamp=35070740666)
    at gstrtph264pay.c:633
---Type <return> to continue, or q <return> to quit---
#16 0xb1add8ab in gst_rtp_h264_pay_handle_buffer (basepayload=0xa31c308, 
    buffer=0xb190fa40) at gstrtph264pay.c:814
#17 0xb4ecf7b2 in gst_basertppayload_chain (pad=0xacf9d1d0, buffer=0xb190fa40)
    at gstbasertppayload.c:399
#18 0xb682787a in gst_pad_chain_unchecked (pad=0xacf9d1d0, buffer=0xb190fa40)
    at gstpad.c:3877
#19 0xb6827f42 in gst_pad_push (pad=0xacf9d350, buffer=0xb190fa40)
    at gstpad.c:4045
#20 0xb1ab6feb in gst_x264_enc_encode_frame (encoder=0xa260e48, 
    pic_in=<value optimized out>, i_nal=0xb443ba74) at gstx264enc.c:884
#21 0xb1ab7473 in gst_x264_enc_chain (pad=0xacf9d290, buf=0xb1912050)
    at gstx264enc.c:776
#22 0xb682787a in gst_pad_chain_unchecked (pad=0xacf9d290, buffer=0xb1912050)
    at gstpad.c:3877
#23 0xb6827f42 in gst_pad_push (pad=0xacf9d4d0, buffer=0xb1912050)
    at gstpad.c:4045
#24 0xb68a6908 in gst_base_transform_chain (pad=0xacf9d410, buffer=0xb1912050)
    at gstbasetransform.c:1891
#25 0xb682787a in gst_pad_chain_unchecked (pad=0xacf9d410, buffer=0xb1912050)
    at gstpad.c:3877
#26 0xb6827f42 in gst_pad_push (pad=0xacf9d650, buffer=0xb1912050)
    at gstpad.c:4045
#27 0xb68a6908 in gst_base_transform_chain (pad=0xacf9d590, buffer=0xb1912050)
    at gstbasetransform.c:1891
#28 0xb682787a in gst_pad_chain_unchecked (pad=0xacf9d590, buffer=0xb1912050)
    at gstpad.c:3877
---Type <return> to continue, or q <return> to quit---
#29 0xb6827f42 in gst_pad_push (pad=0xb191d008, buffer=0xb1912050)
    at gstpad.c:4045
#30 0xb68a6908 in gst_base_transform_chain (pad=0xacf9d710, buffer=0xb1912050)
    at gstbasetransform.c:1891
#31 0xb682787a in gst_pad_chain_unchecked (pad=0xacf9d710, buffer=0xb1912050)
    at gstpad.c:3877
#32 0xb6827f42 in gst_pad_push (pad=0xa2d4be8, buffer=0xb1912050)
    at gstpad.c:4045
#33 0xb681929a in gst_proxy_pad_do_chain (pad=0xa311aa0, buffer=0xb1912050)
    at gstghostpad.c:207
#34 0xb682787a in gst_pad_chain_unchecked (pad=0xa311aa0, buffer=0xb1912050)
    at gstpad.c:3877
#35 0xb6827f42 in gst_pad_push (pad=0xa1a5240, buffer=0xb1912050)
    at gstpad.c:4045
#36 0xb4ebf80d in gst_valve_chain (pad=0xa1a5300, buffer=0xb1912050)
    at gstvalve.c:200
#37 0xb682787a in gst_pad_chain_unchecked (pad=0xa1a5300, buffer=0xb1912050)
    at gstpad.c:3877
#38 0xb6827f42 in gst_pad_push (pad=0xa1a5180, buffer=0xb1912050)
    at gstpad.c:4045
#39 0xb4cf9cf1 in gst_tee_handle_buffer (tee=0xa178970, buffer=0xb1912050)
    at gsttee.c:522
#40 0xb4cfa22f in gst_tee_chain (pad=0xa1a5000, buffer=0xb1912050)
    at gsttee.c:641
#41 0xb682787a in gst_pad_chain_unchecked (pad=0xa1a5000, buffer=0xb1912050)
    at gstpad.c:3877
---Type <return> to continue, or q <return> to quit---
#42 0xb6827f42 in gst_pad_push (pad=0xa17d190, buffer=0xb1912050)
    at gstpad.c:4045
#43 0xb681929a in gst_proxy_pad_do_chain (pad=0xa1a58e0, buffer=0xb1912050)
    at gstghostpad.c:207
#44 0xb682787a in gst_pad_chain_unchecked (pad=0xa1a58e0, buffer=0xb1912050)
    at gstpad.c:3877
#45 0xb6827f42 in gst_pad_push (pad=0xa1b6d90, buffer=0xb1912050)
    at gstpad.c:4045
#46 0xb4cf6820 in gst_queue_loop (pad=0xa1b6d90) at gstqueue.c:1047
#47 0xb6846e6f in gst_task_func (task=0xa16d690, tclass=0x9e9a828)
    at gsttask.c:192
#48 0xb77327c7 in g_thread_pool_thread_proxy (data=0x9e9a8b8)
    at gthreadpool.c:265
#49 0xb7730eb9 in g_thread_create_proxy (data=0xb3b005c8) at gthread.c:635
#50 0xb7e4f17b in start_thread (arg=0xb443cb90) at pthread_create.c:296
#51 0xb7dad09e in clone () from /lib/libc.so.6

Thread 4 (Thread 0xb4c4bb90 (LWP 2561)):
#0  0xffffe424 in __kernel_vsyscall ()
#1  0xb7e53566 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0xb4cf613f in gst_queue_loop (pad=0xa1cd628) at gstqueue.c:1138
#3  0xb6846e6f in gst_task_func (task=0xa16d6e0, tclass=0x9e9a828)
    at gsttask.c:192
#4  0xb77327c7 in g_thread_pool_thread_proxy (data=0x9e9a8b8)
    at gthreadpool.c:265
#5  0xb7730eb9 in g_thread_create_proxy (data=0xa1d1660) at gthread.c:635
---Type <return> to continue, or q <return> to quit---
#6  0xb7e4f17b in start_thread (arg=0xb4c4bb90) at pthread_create.c:296
#7  0xb7dad09e in clone () from /lib/libc.so.6

Thread 1 (Thread 0xb7cea6c0 (LWP 2554)):
#0  0xffffe424 in __kernel_vsyscall ()
#1  0xb7da3ca3 in *__GI___poll (fds=0xb7e17ff4, nfds=5, timeout=449)
    at ../sysdeps/unix/sysv/linux/poll.c:87
#2  0xb770db1d in g_main_context_iterate (context=0x9e89c60, block=1, 
    dispatch=1, self=0x9e7a4f8) at gmain.c:2951
#3  0xb770dfdb in IA__g_main_loop_run (loop=0xa16be00) at gmain.c:2850
#4  0xb72f1e86 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0

#5  0xb76485a3 in _wrap_gtk_main (self=0x0) at ./gtk.override:1186
#6  0xb7ef6b64 in PyEval_EvalFrameEx (f=0x9c7de64, throwflag=0)
    at Python/ceval.c:3557
#7  0xb7ef8877 in PyEval_EvalCodeEx (co=0x9c289f8, globals=0xb7cc3acc, 
    locals=0xb7cc3acc, args=0x0, argcount=0, kws=0x0, kwcount=0, defs=0x0, 
    defcount=0, closure=0x0) at Python/ceval.c:2836
#8  0xb7ef8920 in PyEval_EvalCode (co=0x9c289f8, globals=0xb7cc3acc, 
    locals=0xb7cc3acc) at Python/ceval.c:494
#9  0xb7f10419 in run_mod (mod=<value optimized out>, 
    filename=<value optimized out>, globals=0xb7cc3acc, locals=0xb7cc3acc, 
    flags=0xbfdabbf8, arena=0x9bf5c20) at Python/pythonrun.c:1273
#10 0xb7f104d9 in PyRun_FileExFlags (fp=0x9bdd008, 
    filename=0xbfdad0df "fs2-gui.py", start=257, globals=0xb7cc3acc, 
    locals=0xb7cc3acc, closeit=1, flags=0xbfdabbf8) at Python/pythonrun.c:1259
#11 0xb7f11aad in PyRun_SimpleFileExFlags (fp=0x9bdd008, 
---Type <return> to continue, or q <return> to quit---
    filename=0xbfdad0df "fs2-gui.py", closeit=1, flags=0xbfdabbf8)
    at Python/pythonrun.c:879
#12 0xb7f12169 in PyRun_AnyFileExFlags (fp=0x9bdd008, 
    filename=0xbfdad0df "fs2-gui.py", closeit=1, flags=0xbfdabbf8)
    at Python/pythonrun.c:698
#13 0xb7f1b357 in Py_Main (argc=1, argv=0xbfdabcc4) at Modules/main.c:523
#14 0x0804868e in main (argc=Cannot access memory at address 0x5
) at ./Modules/python.c:23
502		  depth--;
