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issue with dvbsrc and dashsink

    • Closed Issue created by vandana @vandana

    Getting an error when trying to use dashsink and dvbsrc, and the generated segment file is 0 bytes. Note: gstreamer was built using gst-build

    pipeline:

    gst-launch-1.0 --gst-debug=3 dashsink name=dashsink mpd-root-path=/var/www/vividcoredash/media target-duration=60 dynamic=false period-duration=60000 muxer=ts dvbsrc modulation=5 adapter=0 frequency=165000000 delsys=dvb-c-b ! queue ! tsdemux ! mpegvideoparse ! dashsink.video_0
    Setting pipeline to PAUSED ...
0:00:00.022439988 29082 0x5605483ee990 WARN              aggregator gstaggregator.c:2048:gst_aggregator_query_latency_unlocked:<mpegtsmux0> Latency query failed
0:00:00.130847890 29082 0x560548396ac0 FIXME                 dvbsrc gstdvbsrc.c:2140:gst_dvbsrc_is_valid_modulation: No modulation sanity-checks implemented for delivery system: '2'
0:00:00.130879122 29082 0x560548396ac0 FIXME                 dvbsrc gstdvbsrc.c:2108:gst_dvbsrc_is_valid_trans_mode: No transmission-mode sanity checks implemented for this delivery system
0:00:00.130889245 29082 0x560548396ac0 FIXME                 dvbsrc gstdvbsrc.c:2172:gst_dvbsrc_is_valid_bandwidth: No bandwidth sanity checks implemented for this delivery system
Pipeline is live and does not need PREROLL ...
0:00:00.689528390 29082 0x5605483ee850 FIXME                default gstutils.c:4026:gst_pad_create_stream_id_internal:<dvbsrc0:src> Creating random stream-id, consider implementing a deterministic way of creating a stream-id
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
0:00:00.714599397 29082 0x5605483ee940 WARN                 tsdemux tsdemux.c:1725:create_pad_for_stream: AC3 stream type found but no guaranteed way found to differentiate between AC3 and EAC3. Assuming plain AC3.
0:00:00.843793514 29082 0x5605483ee940 WARN            splitmuxsink gstsplitmuxsink.c:2756:handle_mq_input:<splitmuxsink0> Could not request a keyframe. Files may not split at the exact location they should
0:00:01.492284801 29082 0x7f99640021e0 FIXME               basesink gstbasesink.c:3386:gst_base_sink_default_event:<sink> stream-start event without group-id. Consider implementing group-id handling in the upstream elements

(gst-launch-1.0:29082): GStreamer-CRITICAL **: 09:24:21.827: gst_caps_get_structure: assertion 'GST_IS_CAPS (caps)' failed

(gst-launch-1.0:29082): GStreamer-CRITICAL **: 09:24:21.827: gst_structure_get_name: assertion 'structure != NULL' failed

(gst-launch-1.0:29082): GStreamer-CRITICAL **: 09:24:21.827: gst_structure_get_value: assertion 'structure != NULL' failed

(gst-launch-1.0:29082): GStreamer-CRITICAL **: 09:24:21.827: gst_structure_get_string: assertion 'structure != NULL' failed
Caught SIGSEGV
exec gdb failed: No such file or directory
Spinning.  Please run 'gdb gst-launch-1.0 29082' to continue debugging, Ctrl-C to quit, or Ctrl-\ to dump core.
0:00:00.3 / 99:99:99.

    Capabilities

    gst-inspect-1.0 dvbsrc

    Pad Templates: SRC template: 'src' Availability: Always Capabilities: video/mpegts mpegversion: 2 systemstream: true

    Edited

    Designs

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      Activity

      • Stéphane Cerveau changed the description

        changed the description

      • Stéphane Cerveau
        Stéphane Cerveau @dabrain34 ·
        Reporter

        Hello @vandana

        Could you please provide the backtrace of the coredump ?

        You can run the pipeline with G_DEBUG=fatal-warnings to generate a coredump on the first (gst-launch-1.0:29082): GStreamer-CRITICAL **: 09:24:21.827: gst_caps_get_structure: assertion 'GST_IS_CAPS (caps)' failed crittical warning.

        You can also provide GST_DEBUG=*:5 GST_DEBUG_FILE=/tmp/gst.txt environment variable to your command line to generate a log file and attach it to this issue.

        Thx in advance.

      • Tim-Philipp Müller
        Tim-Philipp Müller @tpm ·
        Owner

        Possibly a duplicate of !1981 (merged), so if you could test that patch or the tip of either the 1.18 or master branch that'd be helpful.

      • vandana
        vandana @vandana ·
        Author

        @dabrain34 attching the log file with GST_DEBUG=5gst.txt

      • Stéphane Cerveau
        Stéphane Cerveau @dabrain34 ·
        Reporter

        could you please provide the backtrace:

        Please run 'gdb gst-launch-1.0 29082' to continue debugging, Ctrl-C to quit, or Ctrl-\ to dump core.

      • vandana
        vandana @vandana ·
        Author

        @dabrain34 goodmorning Stephane

        PFA tar file containing following:

        • log file with gdb and continue (gst_gdbcontinue_200223.txt)
        • log file with core dump (gst_200223.txt) I hope this is what was required. If not, pls let me know the specific gdb options to run. gst_log_210223.tar.gz 
        sudo gdb gst-launch-1.0 5440

Attaching to program: /usr/local/bin/gst-launch-1.0, process 5440
[New LWP 5441]
[New LWP 5442]
[New LWP 5443]
[New LWP 5446]
[New LWP 5447]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007fa1cf3fccb9 in __GI___poll (fds=0x562780a45780, nfds=2, timeout=99) at ../sysdeps/unix/sysv/linux/poll.c:29
29	../sysdeps/unix/sysv/linux/poll.c: No such file or directory.
(gdb) continue
Continuing.
        Edited by vandana
      • Stéphane Cerveau
        Stéphane Cerveau @dabrain34 ·
        Reporter

        Hello @vandana,

        Could you run your pipeline with gdb such as:

        G_DEBUG=fatal-warnings gdb --args gst-launch-1.0 dashsink name=dashsink mpd-root-path=/var/www/vividcoredash/media target-duration=60 dynamic=false period-duration=60000 muxer=ts dvbsrc modulation=5 adapter=0 frequency=165000000 delsys=dvb-c-b ! queue ! tsdemux ! mpegvideoparse ! dashsink.video_0

        then start the program with:

        (gdb) run

        and when it breaks into the first error:

        (gdb) thread apply all bt

        And copy paste the result.

        Otherwise you can generate a coredump after setting:

        ulimit -c unlimited

        and runs the pipeline again:

        G_DEBUG=fatal-warnings gst-launch-1.0 dashsink name=dashsink mpd-root-path=/var/www/vividcoredash/media target-duration=60 dynamic=false period-duration=60000 muxer=ts dvbsrc modulation=5 adapter=0 frequency=165000000 delsys=dvb-c-b ! queue ! tsdemux ! mpegvideoparse ! dashsink.video_0

        and read core generated with gdb:

        $ gdb gst-launch-1.0
(gdb) core-file core
$(gdb) thread apply all bt
      • vandana
        vandana @vandana ·
        Author

        Thank you @dabrain34 and here goes

        G_DEBUG=fatal-warnings gdb --args gst-launch-1.0 dashsink name=dashsink mpd-root-path=/var/www/vividcoredash/media target-duration=60 dynamic=false period-duration=60000 muxer=ts dvbsrc modulation=5 adapter=0 frequency=165000000 delsys=dvb-c-b ! queue ! tsdemux ! mpegvideoparse ! dashsink.video_0
GNU gdb (Ubuntu 8.1.1-0ubuntu1) 8.1.1
Copyright (C) 2018 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from gst-launch-1.0...(no debugging symbols found)...done.
(gdb) run
Starting program: /usr/local/bin/gst-launch-1.0 dashsink name=dashsink mpd-root-path=/var/www/vividcoredash/media target-duration=60 dynamic=false period-duration=60000 muxer=ts dvbsrc modulation=5 adapter=0 frequency=165000000 delsys=dvb-c-b \! queue \! tsdemux \! mpegvideoparse \! dashsink.video_0
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Setting pipeline to PAUSED ...
[New Thread 0x7ffff208e700 (LWP 9725)]
[New Thread 0x7ffff188d700 (LWP 9726)]
[New Thread 0x7ffff108c700 (LWP 9727)]
[New Thread 0x7ffff088b700 (LWP 9730)]
Pipeline is live and does not need PREROLL ...
[New Thread 0x7fffe3fff700 (LWP 9731)]
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
[New Thread 0x7fffe37fe700 (LWP 9732)]

(gst-launch-1.0:9721): GStreamer-CRITICAL **: 11:21:18.932: gst_caps_get_structure: assertion 'GST_IS_CAPS (caps)' failed

Thread 2 "mpegtsmux0:src" received signal SIGTRAP, Trace/breakpoint trap.
[Switching to Thread 0x7ffff208e700 (LWP 9725)]
0x00007ffff77b3ea1 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
(gdb) thread apply all bt

Thread 7 (Thread 0x7fffe37fe700 (LWP 9732)):
#0  0x00007ffff7019639 in syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff77f487a in g_cond_wait_until () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffff7781571 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffff7781b2c in g_async_queue_timeout_pop () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007ffff77d6c1e in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007ffff77d6175 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007ffff72f66db in start_thread (arg=0x7fffe37fe700) at pthread_create.c:463
#7  0x00007ffff701f71f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7fffe3fff700 (LWP 9731)):
#0  0x00007ffff7012cb9 in __GI___poll (fds=0x5555559c0df0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff77ae5c9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffff77ae6dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffff77ae721 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007ffff77d6175 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007ffff72f66db in start_thread (arg=0x7fffe3fff700) at pthread_create.c:463
#6  0x00007ffff701f71f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7ffff088b700 (LWP 9730)):
#0  0x00007ffff7012db6 in __GI_ppoll (fds=0x7fffdc0033e0, nfds=2, timeout=<optimized out>, sigmask=0x0)
    at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1  0x00007ffff7b1f4e4 in gst_poll_wait () at /usr/local/lib/libgstreamer-1.0.so.0
#2  0x00007ffff3b2c5c7 in gst_dvbsrc_create () at /usr/local/lib/gstreamer-1.0/libgstdvb.so
#3  0x00007ffff5c46a49 in gst_base_src_get_range () at /usr/local/lib/libgstbase-1.0.so.0
#4  0x00007ffff5c49d80 in gst_base_src_loop () at /usr/local/lib/libgstbase-1.0.so.0
#5  0x00007ffff7b44809 in gst_task_func () at /usr/local/lib/libgstreamer-1.0.so.0
#6  0x00007ffff77d6b40 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007ffff77d6175 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007ffff72f66db in start_thread (arg=0x7ffff088b700) at pthread_create.c:463
#9  0x00007ffff701f71f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7ffff108c700 (LWP 9727)):
#0  0x00007ffff7019639 in syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
---Type <return> to continue, or q <return> to quit---
#1  0x00007ffff77f475f in g_cond_wait () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffff36b85bf in gst_queue_loop () at /usr/local/lib/gstreamer-1.0/libgstcoreelements.so
#3  0x00007ffff7b44809 in gst_task_func () at /usr/local/lib/libgstreamer-1.0.so.0
#4  0x00007ffff77d6b40 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007ffff77d6175 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007ffff72f66db in start_thread (arg=0x7ffff108c700) at pthread_create.c:463
#7  0x00007ffff701f71f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7ffff188d700 (LWP 9726)):
#0  0x00007ffff7019639 in syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff77f475f in g_cond_wait () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffff5c1cd24 in gst_aggregator_pad_chain_internal () at /usr/local/lib/libgstbase-1.0.so.0
#3  0x00007ffff5c1ef16 in gst_aggregator_pad_chain () at /usr/local/lib/libgstbase-1.0.so.0
#4  0x00007ffff7b06812 in gst_pad_push_data () at /usr/local/lib/libgstreamer-1.0.so.0
#5  0x00007ffff7b0f2e3 in gst_pad_push () at /usr/local/lib/libgstreamer-1.0.so.0
#6  0x00007ffff36b8d3a in gst_queue_loop () at /usr/local/lib/gstreamer-1.0/libgstcoreelements.so
#7  0x00007ffff7b44809 in gst_task_func () at /usr/local/lib/libgstreamer-1.0.so.0
#8  0x00007ffff77d6b40 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007ffff77d6175 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007ffff72f66db in start_thread (arg=0x7ffff188d700) at pthread_create.c:463
#11 0x00007ffff701f71f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7ffff208e700 (LWP 9725)):
#0  0x00007ffff77b3ea1 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007ffff77b51dd in g_logv () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffff77b531f in g_log () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffff7ad0842 in gst_caps_get_structure () at /usr/local/lib/libgstreamer-1.0.so.0
#4  0x00007ffff22ca32f in gst_base_ts_mux_create_stream () at /usr/local/lib/gstreamer-1.0/libgstmpegtsmux.so
#5  0x00007ffff22d0afb in gst_base_ts_mux_create_pad_stream_func () at /usr/local/lib/gstreamer-1.0/libgstmpegtsmux.so
#6  0x00007ffff7ae3ded in gst_element_do_foreach_pad () at /usr/local/lib/libgstreamer-1.0.so.0
#7  0x00007ffff22cefcc in gst_base_ts_mux_aggregate () at /usr/local/lib/gstreamer-1.0/libgstmpegtsmux.so
#8  0x00007ffff5c195a1 in gst_aggregator_aggregate_func () at /usr/local/lib/libgstbase-1.0.so.0
#9  0x00007ffff7b44809 in gst_task_func () at /usr/local/lib/libgstreamer-1.0.so.0
#10 0x00007ffff77d6b40 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007ffff77d6175 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
        Edited by vandana
      • Stéphane Cerveau
        Stéphane Cerveau @dabrain34 ·
        Reporter

        It seems that the bug happens in mpegtsmux.

        Could it be possible to generate a TS sample of your dvbsrc, something like a minute (can you confirm when the bug happens, not sure if it happens after 9 hours ??), to reproduce the issue ?

        gst-launch-1.0 dvbsrc modulation=5 adapter=0 frequency=165000000 delsys=dvb-c-b ! queue ! filesink location=/tmp/dvbsrc.ts

      • vandana
        vandana @vandana ·
        Author

        @dabrain34 The error comes up only when dashsink is used, and it comes up immediately, within a minute, not 9 hours.

        with filesink or hlssink, there is no error and the output files are playable.

        This is my hlssink pipeline

        gst-launch-1.0 -v dvbsrc modulation=5 adapter=0 frequency=165000000 delsys=dvb-c-b  ! decodebin name=demux demux. ! queue ! audioresample ! audioconvert !  avenc_aac bitrate = 128000 ! queue !   mpegtsmux name=mux bitrate=2000000 alignment=7 ! hlssink   location=/tmp/media/kl83w0ns/segment%05d.ts playlist-root=http://localhost/media/kl83w0ns playlist-location=/tmp/media/kl83w0ns/live.m3u8   target-duration=20  max-files=10 demux. ! queue  ! videoconvert ! videoscale ! x264enc bitrate=1200  tune=zerolatency ! video/x-h264,stream-format=byte-stream,width=640,height=480,key-int-max=15 ! mux.
      • Stéphane Cerveau
        Stéphane Cerveau @dabrain34 ·
        Reporter

        The error comes up only when dashsink is used, and it comes up immediately, within a minute, not 9 hours. ok that's why I'd like you to generate a sample ts file with your dvbsrc and provide the sample here.

        My idea would be to reproduce a filesrc ! tsdemux ! ... instead of dvbsrc.

        Because on my side with a standard ts file I can not reproduce an issue with dashsink.

      • vandana
        vandana @vandana ·
        Author

        @dabrain34 Hello Stephane,

        Below is the gdb output for using filesrc instead of dvbsrc. Am not getting any errors, and the process didnt stop after the gdb "run". Stopped it manually after an hour or so. However the output file /tmp/video_0_1.ts is 0 bytes. Could this be because I stopped the task manually? The input filesrc file is 2mb.

        G_DEBUG=fatal-warnings gdb --args gst-launch-1.0 dashsink name=dashsink mpd-root-path=/tmp target-duration=60 dynamic=false period-duration=60000 muxer=ts filesrc location=sample_videos/big_buck_bunny_720p_2mb.mp4 ! queue ! tsdemux ! mpegvideoparse ! dashsink.video_0
GNU gdb (Ubuntu 8.1.1-0ubuntu1) 8.1.1
Copyright (C) 2018 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from gst-launch-1.0...(no debugging symbols found)...done.
(gdb) run
Starting program: /usr/local/bin/gst-launch-1.0 dashsink name=dashsink mpd-root-path=/tmp target-duration=60 dynamic=false period-duration=60000 muxer=ts filesrc location=sample_videos/big_buck_bunny_720p_2mb.mp4 \! queue \! tsdemux \! mpegvideoparse \! dashsink.video_0
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Setting pipeline to PAUSED ...
[New Thread 0x7ffff22b1700 (LWP 11999)]
[New Thread 0x7ffff1ab0700 (LWP 12000)]
[New Thread 0x7ffff12af700 (LWP 12001)]
[New Thread 0x7ffff0aae700 (LWP 12002)]
Pipeline is PREROLLING ...
[New Thread 0x7fffe3fff700 (LWP 12003)]
^C
Thread 1 "gst-launch-1.0" received signal SIGINT, Interrupt.
0x00007ffff7012cb9 in __GI___poll (fds=0x5555559e3d70, nfds=2, timeout=100) at ../sysdeps/unix/sysv/linux/poll.c:29
29	../sysdeps/unix/sysv/linux/poll.c: No such file or directory.
(gdb) thread apply all bt

Thread 6 (Thread 0x7fffe3fff700 (LWP 12003)):
#0  0x00007ffff7012cb9 in __GI___poll (fds=0x5555559e3c70, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff77ae5c9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffff77ae6dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffff77ae721 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007ffff77d6175 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007ffff72f66db in start_thread (arg=0x7fffe3fff700) at pthread_create.c:463
#6  0x00007ffff701f71f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7ffff0aae700 (LWP 12002)):
#0  0x00007ffff7019639 in syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff77f475f in g_cond_wait () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffff7b4499c in gst_task_func () at /usr/local/lib/libgstreamer-1.0.so.0
#3  0x00007ffff77d6b40 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007ffff77d6175 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007ffff72f66db in start_thread (arg=0x7ffff0aae700) at pthread_create.c:463
#6  0x00007ffff701f71f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7ffff12af700 (LWP 12001)):
#0  0x00007ffff7019639 in syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff77f475f in g_cond_wait () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffff7b4499c in gst_task_func () at /usr/local/lib/libgstreamer-1.0.so.0
#3  0x00007ffff77d6b40 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007ffff77d6175 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007ffff72f66db in start_thread (arg=0x7ffff12af700) at pthread_create.c:463
#6  0x00007ffff701f71f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7ffff1ab0700 (LWP 12000)):
#0  0x00007ffff7019639 in syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff77f475f in g_cond_wait () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffff3b105bf in gst_queue_loop () at /usr/local/lib/gstreamer-1.0/libgstcoreelements.so
#3  0x00007ffff7b44809 in gst_task_func () at /usr/local/lib/libgstreamer-1.0.so.0
#4  0x00007ffff77d6b40 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007ffff77d6175 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
---Type <return> to continue, or q <return> to quit---
      • Stéphane Cerveau
        Stéphane Cerveau @dabrain34 ·
        Reporter

        Is it a file generated with your dvbsrc ?

      • vandana
        vandana @vandana ·
        Author

        Finally I understood what you needed me to do. :-(

        Generated a file from dvbsrc gst-launch-1.0 -v dvbsrc modulation=5 adapter=0 frequency=147000000 delsys=dvb-c-b ! filesink location=/tmp/dvbsrc.ts

        and then used that for the dashsink. The gdp output is pasted

        G_DEBUG=fatal-warnings gdb --args gst-launch-1.0 dashsink name=dashsink mpd-root-path=/tmp target-duration=60 dynamic=false period-duration=60000 muxer=ts filesrc location=/tmp/dvbsrc.ts ! queue ! tsdemux ! mpegvideoparse ! dashsink.video_0
GNU gdb (Ubuntu 8.1.1-0ubuntu1) 8.1.1
Copyright (C) 2018 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
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<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from gst-launch-1.0...(no debugging symbols found)...done.
(gdb) run
Starting program: /usr/local/bin/gst-launch-1.0 dashsink name=dashsink mpd-root-path=/tmp target-duration=60 dynamic=false period-duration=60000 muxer=ts filesrc location=/tmp/dvbsrc.ts \! queue \! tsdemux \! mpegvideoparse \! dashsink.video_0
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Setting pipeline to PAUSED ...
[New Thread 0x7ffff22b1700 (LWP 13453)]
[New Thread 0x7ffff1ab0700 (LWP 13454)]
[New Thread 0x7ffff12af700 (LWP 13455)]
[New Thread 0x7ffff0aae700 (LWP 13456)]
Pipeline is PREROLLING ...
[New Thread 0x7fffebfff700 (LWP 13457)]
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock

(gst-launch-1.0:13444): GStreamer-CRITICAL **: 08:48:40.222: gst_caps_get_structure: assertion 'GST_IS_CAPS (caps)' failed

Thread 2 "mpegtsmux0:src" received signal SIGTRAP, Trace/breakpoint trap.
[Switching to Thread 0x7ffff22b1700 (LWP 13453)]
0x00007ffff77b3ea1 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
(gdb) thread apply all bt

Thread 6 (Thread 0x7fffebfff700 (LWP 13457)):
#0  0x00007ffff7012cb9 in __GI___poll (fds=0x5555559e48d0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff77ae5c9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffff77ae6dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffff77ae721 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007ffff77d6175 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007ffff72f66db in start_thread (arg=0x7fffebfff700) at pthread_create.c:463
#6  0x00007ffff701f71f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7ffff0aae700 (LWP 13456)):
#0  0x00007ffff7019639 in syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff77f475f in g_cond_wait () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ffff3b105bf in gst_queue_loop () at /usr/local/lib/gstreamer-1.0/libgstcoreelements.so
#3  0x00007ffff7b44809 in gst_task_func () at /usr/local/lib/libgstreamer-1.0.so.0
#4  0x00007ffff77d6b40 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007ffff77d6175 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007ffff72f66db in start_thread (arg=0x7ffff0aae700) at pthread_create.c:463
#7  0x00007ffff701f71f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7ffff12af700 (LWP 13455)):
#0  0x00007ffff7300474 in __libc_read (fd=6, buf=0x7fffd800b270, nbytes=4096) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007ffff3ae219f in gst_file_src_fill () at /usr/local/lib/gstreamer-1.0/libgstcoreelements.so
#2  0x00007ffff5c452bf in gst_base_src_default_create () at /usr/local/lib/libgstbase-1.0.so.0
#3  0x00007ffff5c46a49 in gst_base_src_get_range () at /usr/local/lib/libgstbase-1.0.so.0
#4  0x00007ffff5c49d80 in gst_base_src_loop () at /usr/local/lib/libgstbase-1.0.so.0
#5  0x00007ffff7b44809 in gst_task_func () at /usr/local/lib/libgstreamer-1.0.so.0
#6  0x00007ffff77d6b40 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007ffff77d6175 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007ffff72f66db in start_thread (arg=0x7ffff12af700) at pthread_create.c:463
#9  0x00007ffff701f71f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7ffff1ab0700 (LWP 13454)):
#0  0x00007ffff7019639 in syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff77f475f in g_cond_wait () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
        Edited by vandana
      • Stéphane Cerveau
        Stéphane Cerveau @dabrain34 ·
        Reporter

        Seems that we can reproduce the issue :).

        Can you attach the file generated ?

      • vandana
        vandana @vandana ·
        Author

        It is a 740mb file, attaching it here is taking very long. Could you pls download from here: https://drive.google.com/file/d/1Lu2H2kjXSi0D1vYrxKaxngecYqukgalF/view?usp=sharing

      • Stéphane Cerveau
        Stéphane Cerveau @dabrain34 ·
        Reporter

        Can you give me access with scerveau@collabora.com ?

      • vandana
        vandana @vandana ·
        Author

        done

      • Stéphane Cerveau
        Stéphane Cerveau @dabrain34 ·
        Reporter

        no I dont have the authorization

        Can you try with a shorter version (5s) if the crash happens very early ?

      • vandana
        vandana @vandana ·
        Author

        Pls try again, i have enabled access for anyone with link. If this doesnt work, then will create a smaller file.

      • Stéphane Cerveau
        Stéphane Cerveau @dabrain34 ·
        Reporter

        Working this time the download link but unfortunately I'm unable to reproduce the issue:

        gst-launch-1.0 dashsink name=dashsink mpd-root-path=/tmp target-duration=60 dynamic=false period-duration=60000 muxer=ts filesrc location= /tmp/dvbsrc.ts ! tsdemux ! mpegvideoparse ! dashsink.video_0

        Are you sure to run the last gst-build version ?

      • vandana
        vandana @vandana ·
        Author

        @dabrain34 Goodmorning Stephane, Built gstreamer again (earlier was about a month back). And now no error. Many thanks for walking me through.

      • Stéphane Cerveau
        Stéphane Cerveau @dabrain34 ·
        Reporter

        Good morning Vandana,

        very happy to hear that.

      • Stéphane Cerveau closed

        closed

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