[Bug 703743] GStreamer-CRITICAL **: guint64 _gst_util_uint64_scale_int(guint64, gint, gint, gint): assertion `denom > 0' failed

GStreamer (bugzilla.gnome.org) bugzilla at gnome.org
Mon Jul 8 07:20:06 PDT 2013


https://bugzilla.gnome.org/show_bug.cgi?id=703743
  GStreamer | gstreamer (core) | unspecified

--- Comment #3 from Sebastian Dröge <slomo at circular-chaos.org> 2013-07-08 14:20:00 UTC ---
Backtrace of the first warning

** (gst-launch-1.0:15155): CRITICAL **: gst_video_decoder_negotiate_default:
assertion `GST_VIDEO_INFO_WIDTH (&state->info) != 0' failed

Program received signal SIGTRAP, Trace/breakpoint trap.
[Switching to Thread 0x7ffff3123700 (LWP 15190)]
g_logv (log_domain=0x0, log_level=G_LOG_LEVEL_CRITICAL, format=<optimized out>,
args=args at entry=0x7ffff3121318)
    at /tmp/buildd/glib2.0-2.36.3/./glib/gmessages.c:981
981    /tmp/buildd/glib2.0-2.36.3/./glib/gmessages.c: No such file or
directory.
(gdb) thread apply all bt
[New Thread 0x7fffdaffd700 (LWP 15198)]

Thread 12 (Thread 0x7fffdaffd700 (LWP 15198)):
#0  clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:83
#1  0x00007ffff726fd40 in ?? () at pthread_create.c:219 from
/lib/x86_64-linux-gnu/libpthread.so.0
#2  0x00007fffdaffd700 in ?? ()
#3  0x0000000000000000 in ?? ()

Thread 11 (Thread 0x7fffdb7fe700 (LWP 15197)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007ffff5b5401d in frame_worker_thread (arg=0x7fffe40c71a8) at
libavcodec/pthread.c:366
#2  0x00007ffff726fe0e in start_thread (arg=0x7fffdb7fe700) at
pthread_create.c:311
#3  0x00007ffff6fa493d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 10 (Thread 0x7fffdbfff700 (LWP 15196)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007ffff5b5401d in frame_worker_thread (arg=0x7fffe40c3160) at
libavcodec/pthread.c:366
#2  0x00007ffff726fe0e in start_thread (arg=0x7fffdbfff700) at
pthread_create.c:311
#3  0x00007ffff6fa493d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 9 (Thread 0x7ffff0834700 (LWP 15195)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007ffff5b5401d in frame_worker_thread (arg=0x7fffe80c6238) at
libavcodec/pthread.c:366
#2  0x00007ffff726fe0e in start_thread (arg=0x7ffff0834700) at
pthread_create.c:311
---Type <return> to continue, or q <return> to quit---
#3  0x00007ffff6fa493d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 8 (Thread 0x7ffff1035700 (LWP 15194)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007ffff5b5401d in frame_worker_thread (arg=0x7fffe80c21f0) at
libavcodec/pthread.c:366
#2  0x00007ffff726fe0e in start_thread (arg=0x7ffff1035700) at
pthread_create.c:311
#3  0x00007ffff6fa493d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 7 (Thread 0x7ffff1836700 (LWP 15193)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007ffff5b5401d in frame_worker_thread (arg=0x7fffe80be1a8) at
libavcodec/pthread.c:366
#2  0x00007ffff726fe0e in start_thread (arg=0x7ffff1836700) at
pthread_create.c:311
#3  0x00007ffff6fa493d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 6 (Thread 0x7ffff2037700 (LWP 15192)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007ffff5b5454b in ff_thread_get_buffer (avctx=0x7fffe80b6280,
f=0x7ffff000f040) at libavcodec/pthread.c:954
#2  0x00007ffff5b19319 in alloc_frame_buffer (pic=0x7ffff000f040, s=0x794020)
at libavcodec/mpegvideo.c:285
#3  ff_alloc_picture (s=s at entry=0x794020, pic=pic at entry=0x7ffff000f040,
shared=shared at entry=0) at libavcodec/mpegvideo.c:345
#4  0x00007ffff5b1b5f1 in ff_MPV_frame_start (s=s at entry=0x794020,
avctx=avctx at entry=0x7fffe80b6280)
    at libavcodec/mpegvideo.c:1423
#5  0x00007ffff5a37fb2 in ff_h263_decode_frame (avctx=0x7fffe80b6280,
data=0x7fffe80ba2c0, got_frame=0x7fffe80ba490, 
    avpkt=<optimized out>) at libavcodec/h263dec.c:629
---Type <return> to continue, or q <return> to quit---
#6  0x00007ffff5b54083 in frame_worker_thread (arg=0x7fffe80ba160) at
libavcodec/pthread.c:378
#7  0x00007ffff726fe0e in start_thread (arg=0x7ffff2037700) at
pthread_create.c:311
#8  0x00007ffff6fa493d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 5 (Thread 0x7ffff2922700 (LWP 15191)):
#0  0x00007ffff6f9919d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007ffff76d0194 in g_main_context_poll (priority=2147483647, n_fds=1,
fds=0x7fffdc0008c0, timeout=-1, 
    context=0x64b4f0) at /tmp/buildd/glib2.0-2.36.3/./glib/gmain.c:3995
#2  g_main_context_iterate (context=context at entry=0x64b4f0,
block=block at entry=1, dispatch=dispatch at entry=1, 
    self=<optimized out>) at /tmp/buildd/glib2.0-2.36.3/./glib/gmain.c:3696
#3  0x00007ffff76d029c in g_main_context_iteration (context=0x64b4f0,
may_block=may_block at entry=1)
    at /tmp/buildd/glib2.0-2.36.3/./glib/gmain.c:3762
#4  0x00007ffff76d02e9 in glib_worker_main (data=<optimized out>) at
/tmp/buildd/glib2.0-2.36.3/./glib/gmain.c:5427
#5  0x00007ffff76f41d5 in g_thread_proxy (data=0x787050) at
/tmp/buildd/glib2.0-2.36.3/./glib/gthread.c:798
#6  0x00007ffff726fe0e in start_thread (arg=0x7ffff2922700) at
pthread_create.c:311
#7  0x00007ffff6fa493d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 4 (Thread 0x7ffff3123700 (LWP 15190)):
#0  g_logv (log_domain=0x0, log_level=G_LOG_LEVEL_CRITICAL, format=<optimized
out>, args=args at entry=0x7ffff3121318)
    at /tmp/buildd/glib2.0-2.36.3/./glib/gmessages.c:981
#1  0x00007ffff76d7072 in g_log (log_domain=log_domain at entry=0x0,
log_level=log_level at entry=G_LOG_LEVEL_CRITICAL, 
    format=format at entry=0x7ffff771be42 "%s: assertion `%s' failed") at
/tmp/buildd/glib2.0-2.36.3/./glib/gmessages.c:1010
#2  0x00007ffff76d7099 in g_return_if_fail_warning
(log_domain=log_domain at entry=0x0, 
---Type <return> to continue, or q <return> to quit---
    pretty_function=pretty_function at entry=0x7ffff7eacb40
<__PRETTY_FUNCTION__.19191> "gst_video_decoder_negotiate_default", 
    expression=expression at entry=0x7ffff7eaa070 "GST_VIDEO_INFO_WIDTH
(&state->info) != 0")
    at /tmp/buildd/glib2.0-2.36.3/./glib/gmessages.c:1019
#3  0x00007ffff7e972cd in gst_video_decoder_negotiate_default
(decoder=0x64cc00) at gstvideodecoder.c:3010
#4  0x00007ffff7e99d03 in gst_video_decoder_negotiate (decoder=0x64cc00) at
gstvideodecoder.c:3140
#5  0x00007ffff58bcccc in gst_ffmpegviddec_negotiate
(ffmpegdec=ffmpegdec at entry=0x64cc00, force=0) at gstavviddec.c:894
#6  0x00007ffff58bed80 in gst_ffmpegviddec_negotiate (force=0,
ffmpegdec=0x64cc00) at gstavviddec.c:628
#7  gst_ffmpegviddec_get_buffer (context=0x7fffe80b6280,
picture=0x7ffff000f040) at gstavviddec.c:562
#8  0x00007ffff5b53d5b in submit_packet (avpkt=0x7ffff31216b0,
p=0x7fffe80ba160) at libavcodec/pthread.c:573
#9  ff_thread_decode_frame (avctx=avctx at entry=0x64b000,
picture=picture at entry=0x5dc560, 
    got_picture_ptr=got_picture_ptr at entry=0x7ffff31216ac,
avpkt=avpkt at entry=0x7ffff31216b0) at libavcodec/pthread.c:603
#10 0x00007ffff5bbc6b0 in avcodec_decode_video2 (avctx=0x64b000,
picture=0x5dc560, 
    got_picture_ptr=got_picture_ptr at entry=0x7ffff31216ac,
avpkt=avpkt at entry=0x7ffff31216b0) at libavcodec/utils.c:1283
#11 0x00007ffff58bd067 in gst_ffmpegviddec_video_frame
(ffmpegdec=ffmpegdec at entry=0x64cc00, data=<optimized out>, 
    data at entry=0x7fffe80d6490 "", size=8476, frame=frame at entry=0x7fffe8025aa0,
ret=ret at entry=0x7ffff3121b7c)
    at gstavviddec.c:1115
#12 0x00007ffff58bdae8 in gst_ffmpegviddec_frame
(ffmpegdec=ffmpegdec at entry=0x64cc00, data=data at entry=0x7fffe80d6490 "", 
    size=size at entry=8476, got_data=got_data at entry=0x7ffff3121b78,
frame=frame at entry=0x7fffe8025aa0, 
    ret=ret at entry=0x7ffff3121b7c) at gstavviddec.c:1242
#13 0x00007ffff58be174 in gst_ffmpegviddec_handle_frame (decoder=0x64cc00,
frame=0x7fffe8025aa0) at gstavviddec.c:1358
#14 0x00007ffff7e92809 in gst_video_decoder_decode_frame
(decoder=decoder at entry=0x64cc00, frame=0x7fffe8025aa0)
    at gstvideodecoder.c:2753
#15 0x00007ffff7e94f13 in gst_video_decoder_chain_forward
(decoder=decoder at entry=0x64cc00, buf=buf at entry=0x7fffe80b72a0, 
---Type <return> to continue, or q <return> to quit---
    at_eos=at_eos at entry=0) at gstvideodecoder.c:1756
#16 0x00007ffff7e96583 in gst_video_decoder_chain (pad=<optimized out>,
parent=<optimized out>, buf=0x7fffe80b72a0)
    at gstvideodecoder.c:2003
#17 0x00007ffff7f54005 in gst_pad_chain_data_unchecked (data=0x7fffe80b72a0,
type=4112, pad=0x761920) at gstpad.c:3718
#18 gst_pad_push_data (pad=0x7616f0, type=type at entry=4112, data=<optimized
out>) at gstpad.c:3948
#19 0x00007ffff7f5ae76 in gst_pad_push (pad=<optimized out>, buffer=<optimized
out>) at gstpad.c:4051
#20 0x00007ffff57de40e in gst_rtp_base_depayload_push
(filter=filter at entry=0x78e0d0, out_buf=0x7fffe80b72a0)
    at gstrtpbasedepayload.c:607
#21 0x00007ffff57de9c1 in gst_rtp_base_depayload_chain (pad=<optimized out>,
parent=<optimized out>, in=0x7fffe8025880)
    at gstrtpbasedepayload.c:355
#22 0x00007ffff7f55058 in gst_pad_chain_data_unchecked (data=0x7fffe8025880,
type=4112, pad=0x7614c0) at gstpad.c:3718
#23 gst_pad_chain_list_default (pad=0x7614c0, parent=<optimized out>,
list=0x7fffe4002de0) at gstpad.c:3850
#24 0x00007ffff7f540ba in gst_pad_chain_data_unchecked (data=0x7fffe4002de0,
type=4128, pad=0x7614c0) at gstpad.c:3733
#25 gst_pad_push_data (pad=0x761060, type=type at entry=4128, data=<optimized
out>, data at entry=0x7fffe4002de0) at gstpad.c:3948
#26 0x00007ffff7f5af66 in gst_pad_push_list (pad=<optimized out>,
list=list at entry=0x7fffe4002de0) at gstpad.c:4086
#27 0x00007ffff57dd760 in gst_rtp_base_payload_push_list (payload=<optimized
out>, list=list at entry=0x7fffe4002de0)
    at gstrtpbasepayload.c:929
#28 0x00007ffff53249d5 in gst_rtp_mp4v_pay_flush
(rtpmp4vpay=rtpmp4vpay at entry=0x788190) at gstrtpmp4vpay.c:295
#29 0x00007ffff5324e8d in gst_rtp_mp4v_pay_handle_buffer (basepayload=0x788190,
buffer=0x7aade0) at gstrtpmp4vpay.c:535
#30 0x00007ffff7f54005 in gst_pad_chain_data_unchecked (data=0x7aade0,
type=4112, pad=0x761290) at gstpad.c:3718
#31 gst_pad_push_data (pad=0x760e30, type=type at entry=4112, data=<optimized
out>, data at entry=0x7aade0) at gstpad.c:3948
#32 0x00007ffff7f5ae76 in gst_pad_push (pad=<optimized out>,
buffer=buffer at entry=0x7aade0) at gstpad.c:4051
#33 0x00007ffff7e9ef33 in gst_video_encoder_finish_frame
(encoder=encoder at entry=0x764800, frame=0x0, 
---Type <return> to continue, or q <return> to quit---
    frame at entry=0x7fffe8025000) at gstvideoencoder.c:1940
#34 0x00007ffff58b8472 in gst_ffmpegvidenc_handle_frame (encoder=0x764800,
frame=0x7fffe8025000) at gstavvidenc.c:623
#35 0x00007ffff7e9d819 in gst_video_encoder_chain (pad=<optimized out>,
parent=<optimized out>, buf=<optimized out>)
    at gstvideoencoder.c:1352
#36 0x00007ffff7f54005 in gst_pad_chain_data_unchecked (data=0x7aacd0,
type=4112, pad=0x760c00) at gstpad.c:3718
#37 gst_pad_push_data (pad=pad at entry=0x7609d0, type=type at entry=4112,
data=<optimized out>) at gstpad.c:3948
#38 0x00007ffff7f5ae76 in gst_pad_push (pad=pad at entry=0x7609d0,
buffer=<optimized out>) at gstpad.c:4051
#39 0x00007ffff7e4b155 in gst_base_src_loop (pad=0x7609d0) at gstbasesrc.c:2726
#40 0x00007ffff7f81b89 in gst_task_func (task=0x7b6120) at gsttask.c:316
#41 0x00007ffff76f4b96 in g_thread_pool_thread_proxy (data=<optimized out>)
    at /tmp/buildd/glib2.0-2.36.3/./glib/gthreadpool.c:309
#42 0x00007ffff76f41d5 in g_thread_proxy (data=0x787000) at
/tmp/buildd/glib2.0-2.36.3/./glib/gthread.c:798
#43 0x00007ffff726fe0e in start_thread (arg=0x7ffff3123700) at
pthread_create.c:311
#44 0x00007ffff6fa493d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 3 (Thread 0x7ffff3924700 (LWP 15189)):
#0  clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:83
#1  0x00007ffff726eff5 in do_clone (pd=pd at entry=0x7fffdaffd700,
attr=attr at entry=0x7ffff7278ce0 <default_attr>, 
    stackaddr=<optimized out>, stopped=stopped at entry=1, fct=0x7ffff726fd40
<start_thread>, clone_flags=4001536)
    at ../nptl/sysdeps/pthread/createthread.c:74
#2  0x00007ffff72707fc in create_thread (stackaddr=<optimized out>,
attr=0x7ffff7278ce0 <default_attr>, pd=0x7fffdaffd700)
    at ../nptl/sysdeps/pthread/createthread.c:200
#3  __pthread_create_2_1 (newthread=0x7fffe40cb1f8, attr=0x0,
start_routine=0x7ffff5b53f80 <frame_worker_thread>, 
---Type <return> to continue, or q <return> to quit---
    arg=0x7fffe40cb1f0) at pthread_create.c:584
#4  0x00007ffff5b54b37 in frame_thread_init (avctx=0x63d000) at
libavcodec/pthread.c:859
#5  ff_thread_init (avctx=avctx at entry=0x63d000) at libavcodec/pthread.c:1048
#6  0x00007ffff5bbe9bd in avcodec_open2 (avctx=avctx at entry=0x63d000,
codec=codec at entry=0x7ffff5ed8ee0 <ff_mpeg4_decoder>, 
    options=options at entry=0x0) at libavcodec/utils.c:757
#7  0x00007ffff58ac51d in gst_ffmpeg_avcodec_open (avctx=0x63d000,
codec=0x7ffff5ed8ee0 <ff_mpeg4_decoder>) at gstav.c:48
#8  0x00007ffff58be72b in gst_ffmpegviddec_open (ffmpegdec=0x63de00) at
gstavviddec.c:305
#9  gst_ffmpegviddec_set_format (decoder=0x63de00, state=0x7fffe80277e0) at
gstavviddec.c:465
#10 0x00007ffff7e96c37 in gst_video_decoder_setcaps (caps=0x7fffe40028a0,
decoder=0x63de00) at gstvideodecoder.c:777
#11 gst_video_decoder_chain (pad=<optimized out>, parent=<optimized out>,
buf=0x7fffe40c0700) at gstvideodecoder.c:1964
#12 0x00007ffff7f54005 in gst_pad_chain_data_unchecked (data=0x7fffe40c0700,
type=4112, pad=0x790e10) at gstpad.c:3718
#13 gst_pad_push_data (pad=0x790be0, type=type at entry=4112, data=<optimized
out>) at gstpad.c:3948
#14 0x00007ffff7f5ae76 in gst_pad_push (pad=<optimized out>, buffer=<optimized
out>) at gstpad.c:4051
#15 0x00007ffff57de40e in gst_rtp_base_depayload_push
(filter=filter at entry=0x78e2f0, out_buf=0x7fffe40c0700)
    at gstrtpbasedepayload.c:607
#16 0x00007ffff57de9c1 in gst_rtp_base_depayload_chain (pad=<optimized out>,
parent=<optimized out>, in=0x7fffe80b7d40)
    at gstrtpbasedepayload.c:355
#17 0x00007ffff7f55058 in gst_pad_chain_data_unchecked (data=0x7fffe80b7d40,
type=4112, pad=0x7909b0) at gstpad.c:3718
#18 gst_pad_chain_list_default (pad=0x7909b0, parent=<optimized out>,
list=0x7fffe4002a30) at gstpad.c:3850
#19 0x00007ffff7f540ba in gst_pad_chain_data_unchecked (data=0x7fffe4002a30,
type=4128, pad=0x7909b0) at gstpad.c:3733
#20 gst_pad_push_data (pad=0x790550, type=type at entry=4128, data=<optimized
out>, data at entry=0x7fffe4002a30) at gstpad.c:3948
#21 0x00007ffff7f5af66 in gst_pad_push_list (pad=<optimized out>,
list=list at entry=0x7fffe4002a30) at gstpad.c:4086
#22 0x00007ffff57dd760 in gst_rtp_base_payload_push_list (payload=<optimized
out>, list=list at entry=0x7fffe4002a30)
---Type <return> to continue, or q <return> to quit---
    at gstrtpbasepayload.c:929
#23 0x00007ffff53249d5 in gst_rtp_mp4v_pay_flush
(rtpmp4vpay=rtpmp4vpay at entry=0x788440) at gstrtpmp4vpay.c:295
#24 0x00007ffff5324e8d in gst_rtp_mp4v_pay_handle_buffer (basepayload=0x788440,
buffer=0x7aa780) at gstrtpmp4vpay.c:535
#25 0x00007ffff7f54005 in gst_pad_chain_data_unchecked (data=0x7aa780,
type=4112, pad=0x790780) at gstpad.c:3718
#26 gst_pad_push_data (pad=0x790320, type=type at entry=4112, data=<optimized
out>, data at entry=0x7aa780) at gstpad.c:3948
#27 0x00007ffff7f5ae76 in gst_pad_push (pad=<optimized out>,
buffer=buffer at entry=0x7aa780) at gstpad.c:4051
#28 0x00007ffff7e9ef33 in gst_video_encoder_finish_frame
(encoder=encoder at entry=0x654200, frame=0x0, frame at entry=0x7aa890)
    at gstvideoencoder.c:1940
#29 0x00007ffff58b8472 in gst_ffmpegvidenc_handle_frame (encoder=0x654200,
frame=0x7aa890) at gstavvidenc.c:623
#30 0x00007ffff7e9d819 in gst_video_encoder_chain (pad=<optimized out>,
parent=<optimized out>, buf=<optimized out>)
    at gstvideoencoder.c:1352
#31 0x00007ffff7f54005 in gst_pad_chain_data_unchecked (data=0x7aa670,
type=4112, pad=0x7900f0) at gstpad.c:3718
#32 gst_pad_push_data (pad=pad at entry=0x761d80, type=type at entry=4112,
data=<optimized out>) at gstpad.c:3948
#33 0x00007ffff7f5ae76 in gst_pad_push (pad=pad at entry=0x761d80,
buffer=<optimized out>) at gstpad.c:4051
#34 0x00007ffff7e4b155 in gst_base_src_loop (pad=0x761d80) at gstbasesrc.c:2726
#35 0x00007ffff7f81b89 in gst_task_func (task=0x7b6000) at gsttask.c:316
#36 0x00007ffff76f4b96 in g_thread_pool_thread_proxy (data=<optimized out>)
    at /tmp/buildd/glib2.0-2.36.3/./glib/gthreadpool.c:309
#37 0x00007ffff76f41d5 in g_thread_proxy (data=0x78d770) at
/tmp/buildd/glib2.0-2.36.3/./glib/gthread.c:798
#38 0x00007ffff726fe0e in start_thread (arg=0x7ffff3924700) at
pthread_create.c:311
#39 0x00007ffff6fa493d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 2 (Thread 0x7ffff4125700 (LWP 15188)):
---Type <return> to continue, or q <return> to quit---
#0  0x00007ffff7276acd in nanosleep () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007ffff76f5778 in g_usleep (microseconds=microseconds at entry=50000) at
/tmp/buildd/glib2.0-2.36.3/./glib/gtimer.c:261
#2  0x00007ffff57c3b5f in gst_xvimagesink_event_thread (xvimagesink=0x412f90)
at xvimagesink.c:582
#3  0x00007ffff76f41d5 in g_thread_proxy (data=0x78d720) at
/tmp/buildd/glib2.0-2.36.3/./glib/gthread.c:798
#4  0x00007ffff726fe0e in start_thread (arg=0x7ffff4125700) at
pthread_create.c:311
#5  0x00007ffff6fa493d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 1 (Thread 0x7ffff7ebd700 (LWP 15155)):
#0  0x00007ffff6f9919d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007ffff76d0194 in g_main_context_poll (priority=2147483647, n_fds=2,
fds=0x637fe0, timeout=-1, context=0x7a3e00)
    at /tmp/buildd/glib2.0-2.36.3/./glib/gmain.c:3995
#2  g_main_context_iterate (context=0x7a3e00, block=block at entry=1,
dispatch=dispatch at entry=1, self=<optimized out>)
    at /tmp/buildd/glib2.0-2.36.3/./glib/gmain.c:3696
#3  0x00007ffff76d05fa in g_main_loop_run (loop=0x64b5b0) at
/tmp/buildd/glib2.0-2.36.3/./glib/gmain.c:3895
#4  0x00007ffff7f2ea14 in gst_bus_poll (bus=bus at entry=0x5cacf0,
events=events at entry=GST_MESSAGE_ANY, 
    timeout=<optimized out>) at gstbus.c:1082
#5  0x0000000000404988 in event_loop (pipeline=0x7a4060,
blocking=blocking at entry=1, do_progress=do_progress at entry=1, 
    target_state=target_state at entry=GST_STATE_PAUSED) at gst-launch.c:522
#6  0x00000000004039d6 in main (argc=29, argv=0x7fffffffb7f8) at
gst-launch.c:1104

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