SUMMARY


STEPS TO REPRODUCE
1. 
2. 
3. 

OBSERVED RESULT


EXPECTED RESULT


SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION

information error:

Application: melt (melt), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f6ae773f7c0 (LWP 4085))]

Thread 17 (Thread 0x7f6a977f5700 (LWP 4126)):
#0  0x00007f6ae710e9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f6aa52b6540) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7f6aa52b65a8, cond=0x7f6aa52b6518) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7f6aa52b6518, mutex=0x7f6aa52b65a8) at pthread_cond_wait.c:655
#3  0x00007f6acddbe50e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec.so.57
#4  0x00007f6ae71086db in start_thread (arg=0x7f6a977f5700) at pthread_create.c:463
#5  0x00007f6ae6aff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 16 (Thread 0x7f6a997f9700 (LWP 4125)):
#0  0x00007f6ae710e9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f6aa52b6390) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7f6aa52b63f8, cond=0x7f6aa52b6368) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7f6aa52b6368, mutex=0x7f6aa52b63f8) at pthread_cond_wait.c:655
#3  0x00007f6acddbe50e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec.so.57
#4  0x00007f6ae71086db in start_thread (arg=0x7f6a997f9700) at pthread_create.c:463
#5  0x00007f6ae6aff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7f6a98ff8700 (LWP 4124)):
#0  0x00007f6ae710e9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f6aa52b61e0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7f6aa52b6248, cond=0x7f6aa52b61b8) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7f6aa52b61b8, mutex=0x7f6aa52b6248) at pthread_cond_wait.c:655
#3  0x00007f6acddbe50e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec.so.57
#4  0x00007f6ae71086db in start_thread (arg=0x7f6a98ff8700) at pthread_create.c:463
#5  0x00007f6ae6aff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7f6a99ffa700 (LWP 4123)):
#0  0x00007f6ae710e9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f6aa44d48a0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7f6aa44d4908, cond=0x7f6aa44d4878) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7f6aa44d4878, mutex=0x7f6aa44d4908) at pthread_cond_wait.c:655
#3  0x00007f6acddbe50e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec.so.57
#4  0x00007f6ae71086db in start_thread (arg=0x7f6a99ffa700) at pthread_create.c:463
#5  0x00007f6ae6aff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7f6a9bffe700 (LWP 4122)):
#0  0x00007f6ae710e9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f6aa44d46f0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7f6aa44d4758, cond=0x7f6aa44d46c8) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7f6aa44d46c8, mutex=0x7f6aa44d4758) at pthread_cond_wait.c:655
#3  0x00007f6acddbe50e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec.so.57
#4  0x00007f6ae71086db in start_thread (arg=0x7f6a9bffe700) at pthread_create.c:463
#5  0x00007f6ae6aff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7f6a9b7fd700 (LWP 4121)):
#0  0x00007f6ae710e9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f6aa44d4540) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7f6aa44d45a8, cond=0x7f6aa44d4518) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7f6aa44d4518, mutex=0x7f6aa44d45a8) at pthread_cond_wait.c:655
#3  0x00007f6acddbe50e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec.so.57
#4  0x00007f6ae71086db in start_thread (arg=0x7f6a9b7fd700) at pthread_create.c:463
#5  0x00007f6ae6aff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7f6a7f0ec700 (LWP 4120)):
#0  0x00007f6ae710e9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f6aa4dcc984) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7f6aa4dcc9e8, cond=0x7f6aa4dcc958) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7f6aa4dcc958, mutex=0x7f6aa4dcc9e8) at pthread_cond_wait.c:655
#3  0x00007f6acddbe50e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec.so.57
#4  0x00007f6ae71086db in start_thread (arg=0x7f6a7f0ec700) at pthread_create.c:463
#5  0x00007f6ae6aff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f6a7f8ed700 (LWP 4119)):
#0  0x00007f6ae710e9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f6aa4dcc7d0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7f6aa4dcc838, cond=0x7f6aa4dcc7a8) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7f6aa4dcc7a8, mutex=0x7f6aa4dcc838) at pthread_cond_wait.c:655
#3  0x00007f6acddbe50e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec.so.57
#4  0x00007f6ae71086db in start_thread (arg=0x7f6a7f8ed700) at pthread_create.c:463
#5  0x00007f6ae6aff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f6a800ee700 (LWP 4118)):
#0  0x00007f6ae710e9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f6aa4dcc624) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7f6aa4dcc688, cond=0x7f6aa4dcc5f8) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7f6aa4dcc5f8, mutex=0x7f6aa4dcc688) at pthread_cond_wait.c:655
#3  0x00007f6acddbe50e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec.so.57
#4  0x00007f6ae71086db in start_thread (arg=0x7f6a800ee700) at pthread_create.c:463
#5  0x00007f6ae6aff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f6a808ef700 (LWP 4117)):
#0  0x00007f6ae710e9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f6aa4de2820) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7f6aa4de2888, cond=0x7f6aa4de27f8) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7f6aa4de27f8, mutex=0x7f6aa4de2888) at pthread_cond_wait.c:655
#3  0x00007f6acddbe50e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec.so.57
#4  0x00007f6ae71086db in start_thread (arg=0x7f6a808ef700) at pthread_create.c:463
#5  0x00007f6ae6aff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f6a810f0700 (LWP 4116)):
#0  0x00007f6ae710e9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f6aa4de2670) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7f6aa4de26d8, cond=0x7f6aa4de2648) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7f6aa4de2648, mutex=0x7f6aa4de26d8) at pthread_cond_wait.c:655
#3  0x00007f6acddbe50e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec.so.57
#4  0x00007f6ae71086db in start_thread (arg=0x7f6a810f0700) at pthread_create.c:463
#5  0x00007f6ae6aff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f6a818f1700 (LWP 4115)):
#0  0x00007f6ae710e9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f6aa4de24c0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7f6aa4de2528, cond=0x7f6aa4de2498) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7f6aa4de2498, mutex=0x7f6aa4de2528) at pthread_cond_wait.c:655
#3  0x00007f6acddbe50e in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec.so.57
#4  0x00007f6ae71086db in start_thread (arg=0x7f6a818f1700) at pthread_create.c:463
#5  0x00007f6ae6aff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f6aac91e700 (LWP 4089)):
[KCrash Handler]
#6  0x00007f6ad827580c in jack_deactivate () from /usr/lib/x86_64-linux-gnu/libjack.so.0
#7  0x00007f6ad84b9912 in process_info_destroy (procinfo=0x7f6aa43334e0) at process.c:595
#8  0x00007f6ad84b55c6 in jack_rack_destroy (jack_rack=0x7f6aa58c8810) at jack_rack.c:73
#9  0x00007f6ae732c2c8 in clear_property (self=self@entry=0x7f6aa4275100) at mlt_property.c:109
#10 0x00007f6ae732d06f in mlt_property_set_data (self=0x7f6aa4275100, value=value@entry=0x7f6aa453bc90, length=length@entry=0, destructor=destructor@entry=0x7f6ad84b55b0 <jack_rack_destroy>, serialiser=serialiser@entry=0x0) at mlt_property.c:266
#11 0x00007f6ae73300c1 in mlt_properties_set_data (self=self@entry=0x55dccd37e8b0, name=name@entry=0x7f6ad84bca33 "jackrack", value=value@entry=0x7f6aa453bc90, length=length@entry=0, destroy=0x7f6ad84b55b0 <jack_rack_destroy>, serialise=serialise@entry=0x0) at mlt_properties.c:1165
#12 0x00007f6ad84bb3ec in initialise_jack_rack (properties=properties@entry=0x55dccd37e8b0, channels=channels@entry=4) at filter_ladspa.c:49
#13 0x00007f6ad84bb50d in initialise_jack_rack (properties=properties@entry=0x55dccd37e8b0, channels=2) at filter_ladspa.c:86
#14 0x00007f6ad84bb9cb in ladspa_get_audio (frame=frame@entry=0x7f6aa615ddc0, buffer=buffer@entry=0x7f6aac91db80, format=format@entry=0x55dccd1ba9c0, frequency=frequency@entry=0x7f6aac91db68, channels=channels@entry=0x7f6aac91db70, samples=samples@entry=0x7f6aac91db78) at filter_ladspa.c:133
#15 0x00007f6ae7329509 in mlt_frame_get_audio (self=self@entry=0x7f6aa615ddc0, buffer=buffer@entry=0x7f6aac91db80, format=format@entry=0x55dccd1ba9c0, frequency=frequency@entry=0x7f6aac91db68, channels=channels@entry=0x7f6aac91db70, samples=samples@entry=0x7f6aac91db78) at mlt_frame.c:785
#16 0x00007f6ae7340445 in producer_get_audio (self=self@entry=0x7f6aa514aad0, buffer=buffer@entry=0x7f6aac91db80, format=format@entry=0x55dccd1ba9c0, frequency=frequency@entry=0x7f6aac91db68, channels=channels@entry=0x7f6aac91db70, samples=samples@entry=0x7f6aac91db78) at mlt_tractor.c:420
#17 0x00007f6ae7329509 in mlt_frame_get_audio (self=self@entry=0x7f6aa514aad0, buffer=buffer@entry=0x7f6aac91db80, format=format@entry=0x55dccd1ba9c0, frequency=frequency@entry=0x7f6aac91db68, channels=channels@entry=0x7f6aac91db70, samples=samples@entry=0x7f6aac91db78) at mlt_frame.c:785
#18 0x00007f6ad1c76f60 in transition_get_audio (frame_a=frame_a@entry=0x7f6aa64baf80, buffer=buffer@entry=0x7f6aac91de10, format=format@entry=0x55dccd1ba9c0, frequency=frequency@entry=0x55dccd1baabc, channels=channels@entry=0x55dccd1baab8, samples=samples@entry=0x7f6aac91de0c) at transition_mix.c:138
#19 0x00007f6ae7329509 in mlt_frame_get_audio (self=self@entry=0x7f6aa64baf80, buffer=buffer@entry=0x7f6aac91de10, format=format@entry=0x55dccd1ba9c0, frequency=frequency@entry=0x55dccd1baabc, channels=channels@entry=0x55dccd1baab8, samples=samples@entry=0x7f6aac91de0c) at mlt_frame.c:785
#20 0x00007f6ae7340445 in producer_get_audio (self=self@entry=0x7f6aa4299ce0, buffer=buffer@entry=0x7f6aac91de10, format=format@entry=0x55dccd1ba9c0, frequency=frequency@entry=0x55dccd1baabc, channels=channels@entry=0x55dccd1baab8, samples=samples@entry=0x7f6aac91de0c) at mlt_tractor.c:420
#21 0x00007f6ae7329509 in mlt_frame_get_audio (self=self@entry=0x7f6aa4299ce0, buffer=buffer@entry=0x7f6aac91de10, format=format@entry=0x55dccd1ba9c0, frequency=frequency@entry=0x55dccd1baabc, channels=channels@entry=0x55dccd1baab8, samples=samples@entry=0x7f6aac91de0c) at mlt_frame.c:785
#22 0x00007f6ae7340445 in producer_get_audio (self=self@entry=0x7f6aa628f1d0, buffer=buffer@entry=0x7f6aac91de10, format=format@entry=0x55dccd1ba9c0, frequency=frequency@entry=0x55dccd1baabc, channels=channels@entry=0x55dccd1baab8, samples=samples@entry=0x7f6aac91de0c) at mlt_tractor.c:420
#23 0x00007f6ae7329509 in mlt_frame_get_audio (self=self@entry=0x7f6aa628f1d0, buffer=buffer@entry=0x7f6aac91de10, format=format@entry=0x55dccd1ba9c0, frequency=frequency@entry=0x55dccd1baabc, channels=channels@entry=0x55dccd1baab8, samples=samples@entry=0x7f6aac91de0c) at mlt_frame.c:785
#24 0x00007f6ae733d69f in consumer_read_ahead_thread (arg=0x55dccd1b93c0) at mlt_consumer.c:874
#25 0x00007f6ae71086db in start_thread (arg=0x7f6aac91e700) at pthread_create.c:463
#26 0x00007f6ae6aff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f6aadbf6700 (LWP 4088)):
#0  0x00007f6ae710e9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55dccd1baa2c) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x55dccd1ba9d8, cond=0x55dccd1baa00) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=cond@entry=0x55dccd1baa00, mutex=mutex@entry=0x55dccd1ba9d8) at pthread_cond_wait.c:655
#3  0x00007f6ae733da73 in mlt_consumer_rt_frame (self=self@entry=0x55dccd1b93c0) at mlt_consumer.c:1587
#4  0x00007f6acfdba337 in consumer_thread (arg=<optimized out>) at consumer_avformat.c:1797
#5  0x00007f6ae71086db in start_thread (arg=0x7f6aadbf6700) at pthread_create.c:463
#6  0x00007f6ae6aff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f6aaf58d700 (LWP 4087)):
#0  0x00007fff2d1a3b62 in clock_gettime ()
#1  0x00007f6ae6b0eea6 in __GI___clock_gettime (clock_id=1, tp=0x7f6aaf58cb20) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007f6ad34c16b1 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f6ad34bfee9 in QTimerInfoList::updateCurrentTime() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f6ad34c04c5 in QTimerInfoList::timerWait(timespec&) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f6ad34c1b0e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f6adf879a28 in g_main_context_prepare () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007f6adf87a3fb in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007f6adf87a5dc in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007f6ad34c1dcb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f6ad346303a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f6ad328a4ca in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f6abdb66015 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#13 0x00007f6ad328bc72 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f6ae71086db in start_thread (arg=0x7f6aaf58d700) at pthread_create.c:463
#15 0x00007f6ae6aff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f6abbeb4700 (LWP 4086)):
#0  0x00007f6ae6af2bf9 in __GI___poll (fds=0x7f6abbeb3ce8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f6ae37fc747 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f6ae37fe36a in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f6abde4a578 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f6ad328bc72 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f6ae71086db in start_thread (arg=0x7f6abbeb4700) at pthread_create.c:463
#6  0x00007f6ae6aff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f6ae773f7c0 (LWP 4085)):
#0  0x00007f6ae7112c60 in __GI___nanosleep (requested_time=0x7fff2d00d950, remaining=0x0) at ../sysdeps/unix/sysv/linux/nanosleep.c:28
#1  0x000055dccb1d34b8 in transport (consumer=0x55dccd1b93c0, producer=0x55dccd1a2900) at melt.c:471
#2  main (argc=<optimized out>, argv=<optimized out>) at melt.c:1004