Application: kdenlive (16.04.3)

Qt Version: 5.6.1
Frameworks Version: 5.36.0
Operating System: Linux 4.4.0-53-generic x86_64
Distribution: Linux Mint 18.2 Sonya

-- Information about the crash:
- What I was doing when the application crashed:
Nothing. Kdenlive was possibly generating placeholders for clips inserted into the project a few minutes ago.

-- Backtrace:
Application: Kdenlive (kdenlive), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f2d88bcb8c0 (LWP 30971))]

Thread 44 (Thread 0x7f2cfb85b700 (LWP 1355)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2d57c84cdb in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007f2d807dc6ba in start_thread (arg=0x7f2cfb85b700) at pthread_create.c:333
#3  0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 43 (Thread 0x7f2c96ffd700 (LWP 1354)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2d57c84cdb in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007f2d807dc6ba in start_thread (arg=0x7f2c96ffd700) at pthread_create.c:333
#3  0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 42 (Thread 0x7f2c967fc700 (LWP 1353)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2d57c84cdb in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007f2d807dc6ba in start_thread (arg=0x7f2c967fc700) at pthread_create.c:333
#3  0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 41 (Thread 0x7f2d1d5eb700 (LWP 1352)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2d57c84cdb in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007f2d807dc6ba in start_thread (arg=0x7f2d1d5eb700) at pthread_create.c:333
#3  0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 40 (Thread 0x7f2d1cdea700 (LWP 1351)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2d57c84cdb in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007f2d807dc6ba in start_thread (arg=0x7f2d1cdea700) at pthread_create.c:333
#3  0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 39 (Thread 0x7f2cfc05c700 (LWP 1321)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2d57c84cdb in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007f2d807dc6ba in start_thread (arg=0x7f2cfc05c700) at pthread_create.c:333
#3  0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 38 (Thread 0x7f2c84fdc700 (LWP 1320)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2d57c84cdb in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007f2d807dc6ba in start_thread (arg=0x7f2c84fdc700) at pthread_create.c:333
#3  0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 37 (Thread 0x7f2c91ff3700 (LWP 1319)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2d57c84cdb in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007f2d807dc6ba in start_thread (arg=0x7f2c91ff3700) at pthread_create.c:333
#3  0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 36 (Thread 0x7f2c927f4700 (LWP 1318)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2d57c84cdb in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007f2d807dc6ba in start_thread (arg=0x7f2c927f4700) at pthread_create.c:333
#3  0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 35 (Thread 0x7f2d1ddec700 (LWP 1317)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2d57c84cdb in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007f2d807dc6ba in start_thread (arg=0x7f2d1ddec700) at pthread_create.c:333
#3  0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 34 (Thread 0x7f2d015e4700 (LWP 1288)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2d57c84cdb in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007f2d807dc6ba in start_thread (arg=0x7f2d015e4700) at pthread_create.c:333
#3  0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 33 (Thread 0x7f2c9dffb700 (LWP 1287)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2d57c84cdb in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007f2d807dc6ba in start_thread (arg=0x7f2c9dffb700) at pthread_create.c:333
#3  0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 32 (Thread 0x7f2d005d8700 (LWP 1286)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2d57c84cdb in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007f2d807dc6ba in start_thread (arg=0x7f2d005d8700) at pthread_create.c:333
#3  0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 31 (Thread 0x7f2d00dd9700 (LWP 1285)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2d57c84cdb in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007f2d807dc6ba in start_thread (arg=0x7f2d00dd9700) at pthread_create.c:333
#3  0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 30 (Thread 0x7f2d1effd700 (LWP 1284)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2d57c84cdb in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007f2d807dc6ba in start_thread (arg=0x7f2d1effd700) at pthread_create.c:333
#3  0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 29 (Thread 0x7f2d3645c700 (LWP 1258)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2d57c84cdb in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007f2d807dc6ba in start_thread (arg=0x7f2d3645c700) at pthread_create.c:333
#3  0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 28 (Thread 0x7f2c9e7fc700 (LWP 1257)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2d57c84cdb in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007f2d807dc6ba in start_thread (arg=0x7f2c9e7fc700) at pthread_create.c:333
#3  0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 27 (Thread 0x7f2c9effd700 (LWP 1256)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2d57c84cdb in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007f2d807dc6ba in start_thread (arg=0x7f2c9effd700) at pthread_create.c:333
#3  0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 26 (Thread 0x7f2c9f7fe700 (LWP 1255)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2d57c84cdb in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007f2d807dc6ba in start_thread (arg=0x7f2c9f7fe700) at pthread_create.c:333
#3  0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 25 (Thread 0x7f2cfa7f1700 (LWP 1254)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2d57c84cdb in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007f2d807dc6ba in start_thread (arg=0x7f2cfa7f1700) at pthread_create.c:333
#3  0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 24 (Thread 0x7f2c81fd7700 (LWP 31576)):
#0  0x00007f2d8217424d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f2d7c23a6f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2d7c1f6e74 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2d7c1f7330 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f2d7c1f749c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f2d82dbc37b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f2d82d64ffa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f2d82b8d9e4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f2d82b92808 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f2d807dc6ba in start_thread (arg=0x7f2c81fd7700) at pthread_create.c:333
#10 0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 23 (Thread 0x7f2d3ca02700 (LWP 31575)):
#0  0x00007f2d7c1f4490 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f2d7c1f6d42 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2d7c1f7330 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2d7c1f749c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f2d82dbc37b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f2d82d64ffa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f2d82b8d9e4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f2d82b92808 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f2d807dc6ba in start_thread (arg=0x7f2d3ca02700) at pthread_create.c:333
#9  0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 22 (Thread 0x7f2cb9ffb700 (LWP 31468)):
#0  0x00007f2d73f279a3 in pa_detect_fork () from /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-8.0.so
#1  0x00007f2d7a9f1b6b in pa_stream_writable_size () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#2  0x00007f2d507c4fff in ?? () from /usr/lib/x86_64-linux-gnu/libSDL-1.2.so.0
#3  0x00007f2d50797920 in ?? () from /usr/lib/x86_64-linux-gnu/libSDL-1.2.so.0
#4  0x00007f2d507a10b8 in ?? () from /usr/lib/x86_64-linux-gnu/libSDL-1.2.so.0
#5  0x00007f2d507e0f59 in ?? () from /usr/lib/x86_64-linux-gnu/libSDL-1.2.so.0
#6  0x00007f2d807dc6ba in start_thread (arg=0x7f2cb9ffb700) at pthread_create.c:333
#7  0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 21 (Thread 0x7f2c837da700 (LWP 31467)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2d87ba8933 in ?? () from /usr/lib/x86_64-linux-gnu/libmlt.so.6
#2  0x000055be734a5f6d in RenderThread::run (this=0x7f2d20009940) at /build/kdenlive-KhSDhU/kdenlive-16.04.3/src/monitor/glwidget.cpp:1230
#3  0x00007f2d82b92808 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f2d807dc6ba in start_thread (arg=0x7f2c837da700) at pthread_create.c:333
#5  0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 20 (Thread 0x7f2c937f6700 (LWP 31466)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2d42d7a30f in ?? () from /usr/lib/x86_64-linux-gnu/mlt/libmltsdl.so
#2  0x00007f2d807dc6ba in start_thread (arg=0x7f2c937f6700) at pthread_create.c:333
#3  0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 19 (Thread 0x7f2c827d8700 (LWP 31450)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2d57c838ae in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007f2d807dc6ba in start_thread (arg=0x7f2c827d8700) at pthread_create.c:333
#3  0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 18 (Thread 0x7f2c7ffd3700 (LWP 31449)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2d57c838ae in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007f2d807dc6ba in start_thread (arg=0x7f2c7ffd3700) at pthread_create.c:333
#3  0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 17 (Thread 0x7f2c807d4700 (LWP 31448)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2d57c838ae in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007f2d807dc6ba in start_thread (arg=0x7f2c807d4700) at pthread_create.c:333
#3  0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 16 (Thread 0x7f2c80fd5700 (LWP 31447)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2d57c838ae in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007f2d807dc6ba in start_thread (arg=0x7f2c80fd5700) at pthread_create.c:333
#3  0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 15 (Thread 0x7f2d1ffff700 (LWP 31446)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2d57c838ae in ?? () from /usr/lib/x86_64-linux-gnu/libavcodec-ffmpeg.so.56
#2  0x00007f2d807dc6ba in start_thread (arg=0x7f2d1ffff700) at pthread_create.c:333
#3  0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 14 (Thread 0x7f2cd0e83700 (LWP 31126)):
#0  0x00007f2d8217a66c in __pselect (nfds=66, readfds=0x7f2cd0e82910, writefds=0x7f2cd0e82990, exceptfds=0x0, timeout=<optimized out>, sigmask=<optimized out>) at ../sysdeps/unix/sysv/linux/pselect.c:69
#1  0x00007f2d82db7aea in qt_safe_select(int, fd_set*, fd_set*, fd_set*, timespec const*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f2d82db7c98 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f2d82cfbdf1 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f2d82c9bf1f in QProcess::waitForFinished(int) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x000055be732a259e in ProxyJob::startJob (this=0x7f2cd54b8860) at /build/kdenlive-KhSDhU/kdenlive-16.04.3/src/project/jobs/proxyclipjob.cpp:168
#6  0x000055be732b43f7 in JobManager::slotProcessJobs (this=0x55be757866d0) at /build/kdenlive-KhSDhU/kdenlive-16.04.3/src/project/jobs/jobmanager.cpp:191
#7  0x000055be7328a1ed in QtConcurrent::RunFunctionTask<void>::run (this=0x7f2cd4021300) at /usr/include/x86_64-linux-gnu/qt5/QtConcurrent/qtconcurrentrunbase.h:130
#8  0x00007f2d82b8ec03 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f2d82b92808 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f2d807dc6ba in start_thread (arg=0x7f2cd0e83700) at pthread_create.c:333
#11 0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 13 (Thread 0x7f2cf9ff0700 (LWP 31089)):
#0  0x00007f2d8217a66c in __pselect (nfds=61, readfds=0x7f2cf9fef910, writefds=0x7f2cf9fef990, exceptfds=0x0, timeout=<optimized out>, sigmask=<optimized out>) at ../sysdeps/unix/sysv/linux/pselect.c:69
#1  0x00007f2d82db7aea in qt_safe_select(int, fd_set*, fd_set*, fd_set*, timespec const*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f2d82db7c98 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f2d82cfbdf1 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f2d82c9bf1f in QProcess::waitForFinished(int) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x000055be732a259e in ProxyJob::startJob (this=0x7f2cd45b9ad0) at /build/kdenlive-KhSDhU/kdenlive-16.04.3/src/project/jobs/proxyclipjob.cpp:168
#6  0x000055be732b43f7 in JobManager::slotProcessJobs (this=0x55be757866d0) at /build/kdenlive-KhSDhU/kdenlive-16.04.3/src/project/jobs/jobmanager.cpp:191
#7  0x000055be7328a1ed in QtConcurrent::RunFunctionTask<void>::run (this=0x7f2d30080940) at /usr/include/x86_64-linux-gnu/qt5/QtConcurrent/qtconcurrentrunbase.h:130
#8  0x00007f2d82b8ec03 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f2d82b92808 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f2d807dc6ba in start_thread (arg=0x7f2cf9ff0700) at pthread_create.c:333
#11 0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 12 (Thread 0x7f2d1f7fe700 (LWP 30995)):
#0  0x00007f2d82b8a96c in QMutex::lock() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007f2d82dbb9ff in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f2d7c1f691d in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2d7c1f72bb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f2d7c1f749c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f2d82dbc37b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f2d82d64ffa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f2d82b8d9e4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f2d82b92808 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f2d807dc6ba in start_thread (arg=0x7f2d1f7fe700) at pthread_create.c:333
#10 0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7f2d34eb4700 (LWP 30993)):
#0  0x00007f2d8217870d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f2d7c1f738c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2d7c1f749c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2d82dbc37b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f2d82d64ffa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f2d82b8d9e4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f2d82b92808 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f2d807dc6ba in start_thread (arg=0x7f2d34eb4700) at pthread_create.c:333
#8  0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7f2d37fff700 (LWP 30988)):
#0  0x00007f2d7c23ba79 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f2d7c1f6929 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2d7c1f72bb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2d7c1f749c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f2d82dbc37b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f2d82d64ffa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f2d82b8d9e4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f2d840156b5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f2d82b92808 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f2d807dc6ba in start_thread (arg=0x7f2d37fff700) at pthread_create.c:333
#10 0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7f2d3da03700 (LWP 30986)):
#0  0x00007f2d7c1f6df9 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f2d7c1f7330 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2d7c1f749c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2d82dbc37b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f2d82d64ffa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f2d82b8d9e4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f2d840156b5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f2d82b92808 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f2d807dc6ba in start_thread (arg=0x7f2d3da03700) at pthread_create.c:333
#9  0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7f2d441ec700 (LWP 30980)):
#0  0x00007f2d8217870d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f2d4a93c64c in ?? () from /lib/x86_64-linux-gnu/libusb-1.0.so.0
#2  0x00007f2d807dc6ba in start_thread (arg=0x7f2d441ec700) at pthread_create.c:333
#3  0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7f2d5a1b9700 (LWP 30979)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2d6486474b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#2  0x00007f2d64864477 in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#3  0x00007f2d807dc6ba in start_thread (arg=0x7f2d5a1b9700) at pthread_create.c:333
#4  0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f2d5a9ba700 (LWP 30978)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2d6486474b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#2  0x00007f2d64864477 in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#3  0x00007f2d807dc6ba in start_thread (arg=0x7f2d5a9ba700) at pthread_create.c:333
#4  0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f2d5b1bb700 (LWP 30977)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2d6486474b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#2  0x00007f2d64864477 in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#3  0x00007f2d807dc6ba in start_thread (arg=0x7f2d5b1bb700) at pthread_create.c:333
#4  0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f2d5b9bc700 (LWP 30976)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2d6486474b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#2  0x00007f2d64864477 in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#3  0x00007f2d807dc6ba in start_thread (arg=0x7f2d5b9bc700) at pthread_create.c:333
#4  0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f2d5c3fc700 (LWP 30975)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2d6486474b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#2  0x00007f2d64864477 in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#3  0x00007f2d807dc6ba in start_thread (arg=0x7f2d5c3fc700) at pthread_create.c:333
#4  0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f2d6d8cc700 (LWP 30974)):
#0  0x00007f2d7c23ba94 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f2d7c1f6910 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2d7c1f72bb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2d7c1f749c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f2d82dbc37b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f2d82d64ffa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f2d82b8d9e4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f2d88c32515 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#8  0x00007f2d82b92808 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f2d807dc6ba in start_thread (arg=0x7f2d6d8cc700) at pthread_create.c:333
#10 0x00007f2d821843dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f2d88bcb8c0 (LWP 30971)):
[KCrash Handler]
#6  0x00007f2c7808e120 in ?? ()
#7  0x00007f2d8797b56b in Mlt::Properties::get(char const*) () from /usr/lib/x86_64-linux-gnu/libmlt++.so.3
#8  0x000055be7352f70c in ClipController::property (this=0x7f2c7856a510, name=...) at /build/kdenlive-KhSDhU/kdenlive-16.04.3/src/mltcontroller/clipcontroller.cpp:311
#9  0x000055be73571021 in ProjectClip::hash (this=0x55be76c056e0) at /build/kdenlive-KhSDhU/kdenlive-16.04.3/src/bin/projectclip.cpp:507
#10 0x000055be735611e2 in Bin::slotThumbnailReady (this=0x55be74134130, id=..., img=..., fromFile=<optimized out>) at /build/kdenlive-KhSDhU/kdenlive-16.04.3/src/bin/bin.cpp:1665
#11 0x000055be735e3ef0 in Bin::qt_static_metacall (_o=0x55be74134130, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at /build/kdenlive-KhSDhU/kdenlive-16.04.3/obj-x86_64-linux-gnu/src/moc_bin.cpp:1074
#12 0x00007f2d82d94719 in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f2d8386704b in QWidget::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#14 0x00007f2d83821afc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007f2d83827036 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007f2d82d672a8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007f2d82d6916a in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007f2d82dbbf53 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f2d7c1f7197 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007f2d7c1f73f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f2d7c1f749c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007f2d82dbc35f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007f2d82d64ffa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007f2d82d6d6bc in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x000055be732493da in main (argc=<optimized out>, argv=<optimized out>) at /build/kdenlive-KhSDhU/kdenlive-16.04.3/src/main.cpp:130

Reported using DrKonqi