Application: kdenlive (19.03.70)

Qt Version: 5.11.1
Frameworks Version: 5.54.0
Operating System: Linux 4.18.0-16-generic x86_64
Distribution: Ubuntu 18.10

-- Information about the crash:
- What I was doing when the application crashed:

Added a clip to the timeline > right-click > Change speed > Invert clip and crash.

The crash can be reproduced every time.

-- Backtrace:
Application: Kdenlive (kdenlive), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7ff9f6288940 (LWP 8846))]

Thread 79 (Thread 0x7ff99c64b700 (LWP 9933)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff95a11c684) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff95a11c6e8, cond=0x7ff95a11c658) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff95a11c658, mutex=0x7ff95a11c6e8) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 78 (Thread 0x7ff950ffa700 (LWP 9932)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff95a11c4d4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff95a11c538, cond=0x7ff95a11c4a8) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff95a11c4a8, mutex=0x7ff95a11c538) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 77 (Thread 0x7ff8f57fa700 (LWP 9931)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff95a11c324) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff95a11c388, cond=0x7ff95a11c2f8) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff95a11c2f8, mutex=0x7ff95a11c388) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 76 (Thread 0x7ff8f67fc700 (LWP 9930)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff95a11c170) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff95a11c1d8, cond=0x7ff95a11c148) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff95a11c148, mutex=0x7ff95a11c1d8) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 75 (Thread 0x7ff9f3b6d700 (LWP 9929)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff95a11bfc4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff95a11c028, cond=0x7ff95a11bf98) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff95a11bf98, mutex=0x7ff95a11c028) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 74 (Thread 0x7ff8f4ff9700 (LWP 9917)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff8d0dce2c0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff8d0dce328, cond=0x7ff8d0dce298) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff8d0dce298, mutex=0x7ff8d0dce328) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 73 (Thread 0x7ff8f37f6700 (LWP 9916)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff8d0dce110) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff8d0dce178, cond=0x7ff8d0dce0e8) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff8d0dce0e8, mutex=0x7ff8d0dce178) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 72 (Thread 0x7ff8f3ff7700 (LWP 9915)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff8d0dcdf60) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff8d0dcdfc8, cond=0x7ff8d0dcdf38) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff8d0dcdf38, mutex=0x7ff8d0dcdfc8) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 71 (Thread 0x7ff8f47f8700 (LWP 9914)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff8d0dcddb0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff8d0dcde18, cond=0x7ff8d0dcdd88) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff8d0dcdd88, mutex=0x7ff8d0dcde18) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 70 (Thread 0x7ff91dffb700 (LWP 9913)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff8d0dcdc00) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff8d0dcdc68, cond=0x7ff8d0dcdbd8) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff8d0dcdbd8, mutex=0x7ff8d0dcdc68) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 69 (Thread 0x7ff94d7f2700 (LWP 9912)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff95a0d6980) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff95a0d69e8, cond=0x7ff95a0d6958) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff95a0d6958, mutex=0x7ff95a0d69e8) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 68 (Thread 0x7ff91e7fc700 (LWP 9911)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff95a0d67d4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff95a0d6838, cond=0x7ff95a0d67a8) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff95a0d67a8, mutex=0x7ff95a0d6838) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 67 (Thread 0x7ff8fffff700 (LWP 9910)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff95a0d6624) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff95a0d6688, cond=0x7ff95a0d65f8) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff95a0d65f8, mutex=0x7ff95a0d6688) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 66 (Thread 0x7ff8feffd700 (LWP 9909)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff95a0d6474) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff95a0d64d8, cond=0x7ff95a0d6448) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff95a0d6448, mutex=0x7ff95a0d64d8) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 65 (Thread 0x7ff8fe7fc700 (LWP 9908)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff95a0d62c0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff95a0d6328, cond=0x7ff95a0d6298) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff95a0d6298, mutex=0x7ff95a0d6328) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 64 (Thread 0x7ff98cf5c700 (LWP 9907)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff95a20c540) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff95a20c5a8, cond=0x7ff95a20c518) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff95a20c518, mutex=0x7ff95a20c5a8) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 63 (Thread 0x7ff9cf919700 (LWP 9906)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff95a20c390) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff95a20c3f8, cond=0x7ff95a20c368) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff95a20c368, mutex=0x7ff95a20c3f8) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 62 (Thread 0x7ff9527fc700 (LWP 9905)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff95a20c1e4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff95a20c248, cond=0x7ff95a20c1b8) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff95a20c1b8, mutex=0x7ff95a20c248) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 61 (Thread 0x7ff951ffb700 (LWP 9904)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff95a20c034) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff95a20c098, cond=0x7ff95a20c008) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff95a20c008, mutex=0x7ff95a20c098) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 60 (Thread 0x7ff9507f9700 (LWP 9903)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff95a20be80) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff95a20bee8, cond=0x7ff95a20be58) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff95a20be58, mutex=0x7ff95a20bee8) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 59 (Thread 0x7ff8f5ffb700 (LWP 9902)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff9582ab580) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff9582ab5e8, cond=0x7ff9582ab558) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff9582ab558, mutex=0x7ff9582ab5e8) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 58 (Thread 0x7ff8ea7fc700 (LWP 9901)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff9582ab3d0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff9582ab438, cond=0x7ff9582ab3a8) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff9582ab3a8, mutex=0x7ff9582ab438) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 57 (Thread 0x7ff8eaffd700 (LWP 9900)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff9582ab220) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff9582ab288, cond=0x7ff9582ab1f8) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff9582ab1f8, mutex=0x7ff9582ab288) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 56 (Thread 0x7ff8eb7fe700 (LWP 9899)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff9582ab070) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff9582ab0d8, cond=0x7ff9582ab048) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff9582ab048, mutex=0x7ff9582ab0d8) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 55 (Thread 0x7ff9657fa700 (LWP 9898)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff9582aaec0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff9582aaf28, cond=0x7ff9582aae98) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff9582aae98, mutex=0x7ff9582aaf28) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 54 (Thread 0x7ff904ff9700 (LWP 9897)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff8fb746604) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff8fb746668, cond=0x7ff8fb7465d8) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff8fb7465d8, mutex=0x7ff8fb746668) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 53 (Thread 0x7ff8fcff9700 (LWP 9896)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff8fb746450) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff8fb7464b8, cond=0x7ff8fb746428) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff8fb746428, mutex=0x7ff8fb7464b8) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 52 (Thread 0x7ff8fd7fa700 (LWP 9895)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff8fb7462a0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff8fb746308, cond=0x7ff8fb746278) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff8fb746278, mutex=0x7ff8fb746308) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 51 (Thread 0x7ff8ff7fe700 (LWP 9894)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff8fb7460f0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff8fb746158, cond=0x7ff8fb7460c8) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff8fb7460c8, mutex=0x7ff8fb746158) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 50 (Thread 0x7ff9667fc700 (LWP 9893)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff8fb745f44) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff8fb745fa8, cond=0x7ff8fb745f18) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff8fb745f18, mutex=0x7ff8fb745fa8) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 49 (Thread 0x7ff94cff1700 (LWP 9890)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff8ec4f2844) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff8ec4f28a8, cond=0x7ff8ec4f2818) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff8ec4f2818, mutex=0x7ff8ec4f28a8) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 48 (Thread 0x7ff91ffff700 (LWP 9889)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff8ec4f2694) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff8ec4f26f8, cond=0x7ff8ec4f2668) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff8ec4f2668, mutex=0x7ff8ec4f26f8) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 47 (Thread 0x7ff91f7fe700 (LWP 9888)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff8ec4f24e4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff8ec4f2548, cond=0x7ff8ec4f24b8) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff8ec4f24b8, mutex=0x7ff8ec4f2548) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 46 (Thread 0x7ff91effd700 (LWP 9887)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff8ec4f2334) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff8ec4f2398, cond=0x7ff8ec4f2308) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff8ec4f2308, mutex=0x7ff8ec4f2398) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 45 (Thread 0x7ff9677fe700 (LWP 9886)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff8ec4f2180) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff8ec4f21e8, cond=0x7ff8ec4f2158) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff8ec4f2158, mutex=0x7ff8ec4f21e8) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 44 (Thread 0x7ff918ff9700 (LWP 9885)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff9856af3c0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff9856af428, cond=0x7ff9856af398) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff9856af398, mutex=0x7ff9856af428) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 43 (Thread 0x7ff907fff700 (LWP 9884)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff9856af210) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff9856af278, cond=0x7ff9856af1e8) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff9856af1e8, mutex=0x7ff9856af278) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 42 (Thread 0x7ff9077fe700 (LWP 9883)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff9856af060) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff9856af0c8, cond=0x7ff9856af038) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff9856af038, mutex=0x7ff9856af0c8) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 41 (Thread 0x7ff906ffd700 (LWP 9882)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff9856aeeb4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff9856aef18, cond=0x7ff9856aee88) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff9856aee88, mutex=0x7ff9856aef18) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 40 (Thread 0x7ff97a823700 (LWP 9881)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff9856aed00) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff9856aed68, cond=0x7ff9856aecd8) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff9856aecd8, mutex=0x7ff9856aed68) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 39 (Thread 0x7ff965ffb700 (LWP 9754)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5654dbdb76c4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x5654dbdb7670, cond=0x5654dbdb7698) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x5654dbdb7698, mutex=0x5654dbdb7670) at pthread_cond_wait.c:655
#3  0x00007ff9e80d699d in  () at /usr/lib/x86_64-linux-gnu/mlt/libmltsdl2.so
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 38 (Thread 0x7ff9197fa700 (LWP 9748)):
#0  0x00007ffa01251707 in getpid () at ../sysdeps/unix/syscall-template.S:60
#1  0x00007ff9f85fbd3f in pa_detect_fork () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-12.2.so
#2  0x00007ff9fbe12cdb in pa_stream_writable_size () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#3  0x00007ff9d813ed25 in  () at /usr/lib/x86_64-linux-gnu/libSDL2-2.0.so.0
#4  0x00007ff9d809e836 in  () at /usr/lib/x86_64-linux-gnu/libSDL2-2.0.so.0
#5  0x00007ff9d80e55ec in  () at /usr/lib/x86_64-linux-gnu/libSDL2-2.0.so.0
#6  0x00007ff9d815af89 in  () at /usr/lib/x86_64-linux-gnu/libSDL2-2.0.so.0
#7  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#8  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 37 (Thread 0x7ff94eff5700 (LWP 9732)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5654dbda42c8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x5654dbda4278, cond=0x5654dbda42a0) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x5654dbda42a0, mutex=0x5654dbda4278) at pthread_cond_wait.c:655
#3  0x00007ffa034a8973 in  () at /usr/lib/x86_64-linux-gnu/libmlt.so.6
#4  0x00005654d144fb07 in RenderThread::run() (this=0x7ff94434e3f0) at /home/jorgetech/Temp/kdenlive/src/monitor/glwidget.cpp:1559
#5  0x00007ffa01751c87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#7  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 36 (Thread 0x7ff9a6f7f700 (LWP 9731)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5654dbdb76fc) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x5654dbdb7700, cond=0x5654dbdb76d0) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x5654dbdb76d0, mutex=0x5654dbdb7700) at pthread_cond_wait.c:655
#3  0x00007ff9e80d7512 in  () at /usr/lib/x86_64-linux-gnu/mlt/libmltsdl2.so
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 35 (Thread 0x7ff99de3b700 (LWP 9730)):
#0  0x00007ff9f862a8dd in pa_pstream_unref () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-12.2.so
#1  0x00007ff9f862ae33 in  () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-12.2.so
#2  0x00007ff9f862b66a in  () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-12.2.so
#3  0x00007ff9fbe0a568 in pa_mainloop_dispatch () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007ff9fbe0a83c in pa_mainloop_iterate () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007ff9fbe0a8e0 in pa_mainloop_run () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007ff9d813eeef in  () at /usr/lib/x86_64-linux-gnu/libSDL2-2.0.so.0
#7  0x00007ff9d80e55ec in  () at /usr/lib/x86_64-linux-gnu/libSDL2-2.0.so.0
#8  0x00007ff9d815af89 in  () at /usr/lib/x86_64-linux-gnu/libSDL2-2.0.so.0
#9  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 34 (Thread 0x7ff952ffd700 (LWP 9716)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff940357f44) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff940357fa8, cond=0x7ff940357f18) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff940357f18, mutex=0x7ff940357fa8) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 33 (Thread 0x7ff9537fe700 (LWP 9715)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff940357d94) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff940357df8, cond=0x7ff940357d68) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff940357d68, mutex=0x7ff940357df8) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 32 (Thread 0x7ff953fff700 (LWP 9714)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff940357be4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff940357c48, cond=0x7ff940357bb8) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff940357bb8, mutex=0x7ff940357c48) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 31 (Thread 0x7ff964ff9700 (LWP 9713)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff940357a34) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff940357a98, cond=0x7ff940357a08) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff940357a08, mutex=0x7ff940357a98) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 30 (Thread 0x7ff97a00a700 (LWP 9712)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff940357880) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff9403578e8, cond=0x7ff940357858) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff940357858, mutex=0x7ff9403578e8) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 29 (Thread 0x7ff94e7f4700 (LWP 9561)):
#0  0x00007ff9f8629908 in  () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-12.2.so
#1  0x00007ff9f862aa6d in  () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-12.2.so
#2  0x00007ff9f862ae19 in  () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-12.2.so
#3  0x00007ff9f862b66a in  () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-12.2.so
#4  0x00007ff9fbe0a568 in pa_mainloop_dispatch () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007ff9fbe0a83c in pa_mainloop_iterate () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007ff9fbe0a8e0 in pa_mainloop_run () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#7  0x00007ff9fbe188f9 in  () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#8  0x00007ff9f863b6f8 in  () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-12.2.so
#9  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 28 (Thread 0x7ff970ff9700 (LWP 9553)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff991313c40) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff991313bf0, cond=0x7ff991313c18) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff991313c18, mutex=0x7ff991313bf0) at pthread_cond_wait.c:655
#3  0x00007ffa034b14eb in  () at /usr/lib/x86_64-linux-gnu/libmlt.so.6
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 27 (Thread 0x7ff9717fa700 (LWP 9552)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff991313c40) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff991313bf0, cond=0x7ff991313c18) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff991313c18, mutex=0x7ff991313bf0) at pthread_cond_wait.c:655
#3  0x00007ffa034b14eb in  () at /usr/lib/x86_64-linux-gnu/libmlt.so.6
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 26 (Thread 0x7ff971ffb700 (LWP 9551)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff991313c40) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff991313bf0, cond=0x7ff991313c18) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff991313c18, mutex=0x7ff991313bf0) at pthread_cond_wait.c:655
#3  0x00007ffa034b14eb in  () at /usr/lib/x86_64-linux-gnu/libmlt.so.6
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 25 (Thread 0x7ff9727fc700 (LWP 9550)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff991313c40) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff991313bf0, cond=0x7ff991313c18) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff991313c18, mutex=0x7ff991313bf0) at pthread_cond_wait.c:655
#3  0x00007ffa034b14eb in  () at /usr/lib/x86_64-linux-gnu/libmlt.so.6
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 24 (Thread 0x7ff972ffd700 (LWP 9549)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff99056c240) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff99056c2a8, cond=0x7ff99056c218) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff99056c218, mutex=0x7ff99056c2a8) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 23 (Thread 0x7ff9737fe700 (LWP 9548)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff99056c090) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff99056c0f8, cond=0x7ff99056c068) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff99056c068, mutex=0x7ff99056c0f8) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 22 (Thread 0x7ff973fff700 (LWP 9547)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff99056bee4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff99056bf48, cond=0x7ff99056beb8) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff99056beb8, mutex=0x7ff99056bf48) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 21 (Thread 0x7ff978ff9700 (LWP 9546)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff99056bd34) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff99056bd98, cond=0x7ff99056bd08) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff99056bd08, mutex=0x7ff99056bd98) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 20 (Thread 0x7ff9797fa700 (LWP 9545)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff99056bb84) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff99056bbe8, cond=0x7ff99056bb58) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff99056bb58, mutex=0x7ff99056bbe8) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 19 (Thread 0x7ff998dfe700 (LWP 9539)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff990009bc0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff990009c28, cond=0x7ff990009b98) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff990009b98, mutex=0x7ff990009c28) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 18 (Thread 0x7ff9995ff700 (LWP 9538)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff990009a10) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff990009a78, cond=0x7ff9900099e8) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff9900099e8, mutex=0x7ff990009a78) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 17 (Thread 0x7ff999e00700 (LWP 9537)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff990009860) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff9900098c8, cond=0x7ff990009838) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff990009838, mutex=0x7ff9900098c8) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 16 (Thread 0x7ff99a601700 (LWP 9536)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff9900096b0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff990009718, cond=0x7ff990009688) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff990009688, mutex=0x7ff990009718) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7ff94f7f6700 (LWP 9535)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff990009500) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff990009568, cond=0x7ff9900094d8) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff9900094d8, mutex=0x7ff990009568) at pthread_cond_wait.c:655
#3  0x00007ff9de7734fe in  () at /usr/lib/x86_64-linux-gnu/libavcodec.so.58
#4  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#5  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7ff98e7fc700 (LWP 9534)):
#0  0x00007ffa0127bf64 in __GI___libc_read (fd=35, buf=0x7ff98e7fba00, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:26
#1  0x00007ff9fbeca180 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff9fbe8491f in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff9fbe84df0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007ff9fbe84f6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007ffa0194c15b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007ffa018f916b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007ffa017480b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007ffa02836396 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007ffa01751c87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#11 0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7ff98f7fe700 (LWP 8868)):
#0  0x00007ffa0127bf64 in __GI___libc_read (fd=31, buf=0x7ff98f7fda40, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:26
#1  0x00007ff9fbeca180 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff9fbe8491f in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff9fbe84df0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007ff9fbe84f6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007ffa0194c15b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007ffa018f916b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007ffa017480b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007ffa01751c87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7ff98ffff700 (LWP 8867)):
#0  0x00007ff9fbecb509 in g_mutex_lock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007ff9fbe8482c in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff9fbe84df0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff9fbe84f6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007ffa0194c15b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ffa018f916b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007ffa017480b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007ffa01751c87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#9  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7ff9b5fbd700 (LWP 8862)):
#0  0x00007ffa0194c03e in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007ff9fbe84379 in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff9fbe84d7b in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff9fbe84f6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007ffa0194c15b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ffa018f916b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007ffa017480b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007ffa02836396 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007ffa01751c87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7ff9b71fe700 (LWP 8861)):
#0  0x00007ffa01744dfc in QMutex::lock() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007ffa0194c619 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007ff9fbe84821 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff9fbe84df0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007ff9fbe84f6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007ffa0194c15b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007ffa018f916b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007ffa017480b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007ffa025b11f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007ffa01751c87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#11 0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7ff9b79ff700 (LWP 8860)):
#0  0x00007ff9fbecb509 in g_mutex_lock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007ff9fbe84e0e in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff9fbe84f6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffa0194c15b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ffa018f916b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ffa017480b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007ffa02836396 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007ffa01751c87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#9  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7ff9ccc96700 (LWP 8859)):
#0  0x00007ff9fbe83fb0 in g_main_context_release () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007ff9fbe84e06 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff9fbe84f6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffa0194c15b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ffa018f916b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ffa017480b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007ffa025b11f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007ffa01751c87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#9  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7ff9cded7700 (LWP 8858)):
#0  0x00007ffa012806d9 in __GI___poll (fds=0x7ff9b8004860, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ff9fbe84e46 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff9fbe84f6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffa0194c15b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ffa018f916b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ffa017480b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007ffa025b11f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007ffa01751c87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#9  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7ff9cf118700 (LWP 8857)):
#0  0x00007ffa0129b111 in __libc_enable_asynccancel () at ../sysdeps/unix/sysv/linux/x86_64/cancellation.S:58
#1  0x00007ffa0127bf55 in __GI___libc_read (fd=16, buf=0x7ff9cf117a20, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:26
#2  0x00007ff9fbeca180 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff9fbe8491f in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007ff9fbe84df0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007ff9fbe84f6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007ffa0194c15b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007ffa018f916b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007ffa017480b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007ffa025b11f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007ffa01751c87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#12 0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7ff9d0e3f700 (LWP 8853)):
#0  0x00007ff9fbecb524 in g_mutex_unlock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007ff9fbe84e06 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff9fbe84f6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffa0194c15b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ffa018f916b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ffa017480b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007ffa025b11f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007ffa01751c87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#9  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7ff9f0b3e700 (LWP 8850)):
#0  0x00007ffa012806d9 in __GI___poll (fds=0x7ff9e00092c0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ff9fbe84e46 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff9fbe84f6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ffa0194c15b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ffa018f916b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ffa017480b6 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007ffa03290545 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007ffa01751c87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#9  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7ff9f171f700 (LWP 8849)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5654d2148378) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x5654d2148328, cond=0x5654d2148350) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x5654d2148350, mutex=0x5654d2148328) at pthread_cond_wait.c:655
#3  0x00007ff9f1dfc46b in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007ff9f1dfc1d7 in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#6  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7ff9f6284700 (LWP 8847)):
#0  0x00007ff9fffb12eb in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff9ffa5d090) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff9fffb12eb in __pthread_cond_wait_common (abstime=0x0, mutex=0x5654d20cbde0, cond=0x7ff9ffa5d068) at pthread_cond_wait.c:502
#2  0x00007ff9fffb12eb in __pthread_cond_wait (cond=0x7ff9ffa5d068, mutex=0x5654d20cbde0) at pthread_cond_wait.c:655
#3  0x00007ffa015ba83c in std::condition_variable::wait(std::unique_lock<std::mutex>&) () at /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#4  0x00007ff9fef8b832 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#5  0x00007ff9fef8b949 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#6  0x00007ffa015c063f in  () at /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#7  0x00007ff9fffab164 in start_thread (arg=<optimized out>) at pthread_create.c:486
#8  0x00007ffa0128cdef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7ff9f6288940 (LWP 8846)):
[KCrash Handler]
#6  0x00007ffa011b3077 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#7  0x00007ffa01194535 in __GI_abort () at abort.c:79
#8  0x00007ffa017108d7 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007ffa0170fdb3 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00005654d119c72b in QList<QVariant>::at(int) const (this=0x565507f8d140, i=-1) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:541
#11 0x00005654d15e8eca in TimelineWaveform::paint(QPainter*) (this=0x565507f8d120, painter=0x7ffc665750f8) at /home/jorgetech/Temp/kdenlive/src/timeline2/view/qml/timelineitems.cpp:122
#12 0x00007ffa028ac8b7 in QSGDefaultPainterNode::paint() () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#13 0x00007ffa028ad64c in QSGDefaultPainterNode::update() () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#14 0x00007ffa02947ba9 in QQuickPaintedItem::updatePaintNode(QSGNode*, QQuickItem::UpdatePaintNodeData*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#15 0x00007ffa0290a4f0 in QQuickWindowPrivate::updateDirtyNode(QQuickItem*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#16 0x00007ffa0290a953 in QQuickWindowPrivate::updateDirtyNodes() () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#17 0x00007ffa0290be12 in QQuickWindowPrivate::syncSceneGraph() () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#18 0x00007ffa029c7e39 in QQuickRenderControl::sync() () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#19 0x00007ffa034d10c6 in  () at /usr/lib/x86_64-linux-gnu/libQt5QuickWidgets.so.5
#20 0x00007ffa034d12a6 in  () at /usr/lib/x86_64-linux-gnu/libQt5QuickWidgets.so.5
#21 0x00007ffa01923f4b in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007ffa02d24c6b in QWidget::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#23 0x00007ffa034d4e2d in QQuickWidget::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5QuickWidgets.so.5
#24 0x00007ffa02ce64a1 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#25 0x00007ffa02cedae0 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#26 0x00007ffa018fa499 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007ffa0194b558 in QTimerInfoList::activateTimers() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#28 0x00007ffa0194bdb4 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007ff9fbe84c3e in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#30 0x00007ff9fbe84ed8 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#31 0x00007ff9fbe84f6c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007ffa0194c143 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#33 0x00007ff9f4f66e51 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#34 0x00007ffa018f916b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#35 0x00007ffa019012e2 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#36 0x00005654d109e1d2 in main(int, char**) (argc=1, argv=0x7ffc66575e18) at /home/jorgetech/Temp/kdenlive/src/main.cpp:196
[Inferior 1 (process 8846) detached]

Reported using DrKonqi