Application: kdenlive (17.12.1)
 (Compiled from sources)
Qt Version: 5.6.2
Frameworks Version: 5.32.0
Operating System: Linux 4.4.112-2.gaf1ac1a-default x86_64
Distribution: "openSUSE Leap 42.3"

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

everything is fine when I add clips to the project, but when I start to select the ones I'm going to insert into the timeline, it closes unexpectedly

The crash can be reproduced every time.

-- Backtrace:
Application: Kdenlive (kdenlive), signal: Aborted
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7ff275d2c900 (LWP 18979))]

Thread 10 (Thread 0x7ff21b66e700 (LWP 19134)):
[KCrash Handler]
#6  0x00007ff26e35e8c7 in raise () from /lib64/libc.so.6
#7  0x00007ff26e35fc9a in abort () from /lib64/libc.so.6
#8  0x00007ff23421545f in movit::abort_gl_error(unsigned int, char const*, int) () from /usr/lib64/libmovit.so.7
#9  0x00007ff234225d5b in movit::EffectChain::execute_phase(movit::Phase*, bool, std::map<movit::Phase*, unsigned int, std::less<movit::Phase*>, std::allocator<std::pair<movit::Phase* const, unsigned int> > >*, std::set<movit::Phase*, std::less<movit::Phase*>, std::allocator<movit::Phase*> >*) () from /usr/lib64/libmovit.so.7
#10 0x00007ff234226067 in movit::EffectChain::render_to_fbo(unsigned int, unsigned int, unsigned int) () from /usr/lib64/libmovit.so.7
#11 0x00007ff234489eaf in GlslManager::render_frame_texture (this=0x1f8a110, chain=0x7ff210098b50, frame=0x7ff1f12dae10, width=1920, height=1080, image=0x7ff21b66dca8) at filter_glsl_manager.cpp:404
#12 0x00007ff23448cd23 in convert_image (frame=0x7ff1f12dae10, image=0x7ff21b66dca8, format=0x254383c, output_format=mlt_image_glsl_texture) at filter_movit_convert.cpp:573
#13 0x00007ff274f8f898 in mlt_frame_get_image (self=self@entry=0x7ff1f12dae10, buffer=buffer@entry=0x7ff21b66dca8, format=format@entry=0x254383c, width=width@entry=0x7ff21b66dc94, height=height@entry=0x7ff21b66dc98, writable=writable@entry=0) at mlt_frame.c:591
#14 0x00007ff274fa2aac in consumer_read_ahead_thread (arg=0x28a1860) at mlt_consumer.c:825
#15 0x000000000072428d in RenderThread::run (this=0x7ff210551280) at /usr/src/debug/kdenlive-17.12.1/src/monitor/glwidget.cpp:1282
#16 0x00007ff26ee00a29 in ?? () from /usr/lib64/libQt5Core.so.5
#17 0x00007ff26cbff724 in start_thread () from /lib64/libpthread.so.0
#18 0x00007ff26e413c1d in clone () from /lib64/libc.so.6

Thread 9 (Thread 0x7ff1ff815700 (LWP 19133)):
#0  0x00007ff26cc040cf in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007ff274fa2d2b in mlt_consumer_rt_frame (self=self@entry=0x28a1860) at mlt_consumer.c:1576
#2  0x00007ff2329154d8 in consumer_thread (arg=0x28a1860) at consumer_sdl_audio.c:531
#3  0x00007ff26cbff724 in start_thread () from /lib64/libpthread.so.0
#4  0x00007ff26e413c1d in clone () from /lib64/libc.so.6

Thread 8 (Thread 0x7ff21ae6d700 (LWP 18995)):
#0  0x00007ff26ac41d57 in g_main_context_check () from /usr/lib64/libglib-2.0.so.0
#1  0x00007ff26ac422a8 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007ff26ac4242c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007ff26f0131ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#4  0x00007ff26efc0bfb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#5  0x00007ff26edfbf5a in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#6  0x00007ff26ee00a29 in ?? () from /usr/lib64/libQt5Core.so.5
#7  0x00007ff26cbff724 in start_thread () from /lib64/libpthread.so.0
#8  0x00007ff26e413c1d in clone () from /lib64/libc.so.6

Thread 7 (Thread 0x7ff21be6f700 (LWP 18993)):
#0  0x00007ff26ac83899 in g_mutex_lock () from /usr/lib64/libglib-2.0.so.0
#1  0x00007ff26ac41dac in g_main_context_check () from /usr/lib64/libglib-2.0.so.0
#2  0x00007ff26ac422a8 in ?? () from /usr/lib64/libglib-2.0.so.0
#3  0x00007ff26ac4242c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#4  0x00007ff26f0131ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#5  0x00007ff26efc0bfb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#6  0x00007ff26edfbf5a in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#7  0x00007ff26ee00a29 in ?? () from /usr/lib64/libQt5Core.so.5
#8  0x00007ff26cbff724 in start_thread () from /lib64/libpthread.so.0
#9  0x00007ff26e413c1d in clone () from /lib64/libc.so.6

Thread 6 (Thread 0x7ff22a3e6700 (LWP 18988)):
#0  0x00007ff26ac3f68c in ?? () from /usr/lib64/libglib-2.0.so.0
#1  0x00007ff26ac418fb in g_main_context_prepare () from /usr/lib64/libglib-2.0.so.0
#2  0x00007ff26ac42230 in ?? () from /usr/lib64/libglib-2.0.so.0
#3  0x00007ff26ac4242c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#4  0x00007ff26f0131ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#5  0x00007ff26efc0bfb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#6  0x00007ff26edfbf5a in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#7  0x00007ff2701883d8 in ?? () from /usr/lib64/libQt5Qml.so.5
#8  0x00007ff26ee00a29 in ?? () from /usr/lib64/libQt5Core.so.5
#9  0x00007ff26cbff724 in start_thread () from /lib64/libpthread.so.0
#10 0x00007ff26e413c1d in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7ff22c2ca700 (LWP 18986)):
#0  0x00007ff26cc04f01 in pthread_getspecific () from /lib64/libpthread.so.0
#1  0x00007ff26ac66f20 in g_thread_self () from /usr/lib64/libglib-2.0.so.0
#2  0x00007ff26ac4241d in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007ff26f0131ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#4  0x00007ff26efc0bfb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#5  0x00007ff26edfbf5a in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#6  0x00007ff2701883d8 in ?? () from /usr/lib64/libQt5Qml.so.5
#7  0x00007ff26ee00a29 in ?? () from /usr/lib64/libQt5Core.so.5
#8  0x00007ff26cbff724 in start_thread () from /lib64/libpthread.so.0
#9  0x00007ff26e413c1d in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7ff2515c1700 (LWP 18985)):
#0  0x00007ff26ac3f6fe in ?? () from /usr/lib64/libglib-2.0.so.0
#1  0x00007ff26ac418fb in g_main_context_prepare () from /usr/lib64/libglib-2.0.so.0
#2  0x00007ff26ac42230 in ?? () from /usr/lib64/libglib-2.0.so.0
#3  0x00007ff26ac4242c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#4  0x00007ff26f0131ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#5  0x00007ff26efc0bfb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#6  0x00007ff26edfbf5a in QThread::exec() () from /usr/lib64/libQt5Core.so.5
#7  0x00007ff270c0a295 in ?? () from /usr/lib64/libQt5DBus.so.5
#8  0x00007ff26ee00a29 in ?? () from /usr/lib64/libQt5Core.so.5
#9  0x00007ff26cbff724 in start_thread () from /lib64/libpthread.so.0
#10 0x00007ff26e413c1d in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7ff252448700 (LWP 18984)):
#0  0x00007ff26cc040cf in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007ff25d770b4b in ?? () from /usr/lib64/dri/r600_dri.so
#2  0x00007ff25d7708c7 in ?? () from /usr/lib64/dri/r600_dri.so
#3  0x00007ff26cbff724 in start_thread () from /lib64/libpthread.so.0
#4  0x00007ff26e413c1d in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7ff25f869700 (LWP 18982)):
#0  0x00007ff26e40b37d in poll () from /lib64/libc.so.6
#1  0x00007ff2687293c2 in ?? () from /usr/lib64/libxcb.so.1
#2  0x00007ff26872afaf in xcb_wait_for_event () from /usr/lib64/libxcb.so.1
#3  0x00007ff261dc40d9 in ?? () from /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007ff26ee00a29 in ?? () from /usr/lib64/libQt5Core.so.5
#5  0x00007ff26cbff724 in start_thread () from /lib64/libpthread.so.0
#6  0x00007ff26e413c1d in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7ff275d2c900 (LWP 18979)):
#0  0x00007ff26cc040cf in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007ff268729609 in ?? () from /usr/lib64/libxcb.so.1
#2  0x00007ff26872acff in ?? () from /usr/lib64/libxcb.so.1
#3  0x00007ff26872ae12 in xcb_wait_for_reply () from /usr/lib64/libxcb.so.1
#4  0x00007ff261de07ad in ?? () from /usr/lib64/libQt5XcbQpa.so.5
#5  0x00007ff261de0973 in ?? () from /usr/lib64/libQt5XcbQpa.so.5
#6  0x00007ff26f51a4b4 in QCursor::pos(QScreen const*) () from /usr/lib64/libQt5Gui.so.5
#7  0x00007ff26f51a671 in QCursor::pos() () from /usr/lib64/libQt5Gui.so.5
#8  0x00007ff270fdd35c in QApplicationPrivate::sendSyntheticEnterLeave(QWidget*) () from /usr/lib64/libQt5Widgets.so.5
#9  0x00007ff27101a7ed in QWidget::setVisible(bool) () from /usr/lib64/libQt5Widgets.so.5
#10 0x00007ff271019de1 in ?? () from /usr/lib64/libQt5Widgets.so.5
#11 0x00007ff26efede26 in QObject::event(QEvent*) () from /usr/lib64/libQt5Core.so.5
#12 0x00007ff27101ae9b in QWidget::event(QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#13 0x00007ff270fd928c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#14 0x00007ff270fdd8ea in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
#15 0x00007ff26efc2be5 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib64/libQt5Core.so.5
#16 0x00007ff26efc49ca in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib64/libQt5Core.so.5
#17 0x00007ff26f013b03 in ?? () from /usr/lib64/libQt5Core.so.5
#18 0x00007ff26ac42134 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#19 0x00007ff26ac42388 in ?? () from /usr/lib64/libglib-2.0.so.0
#20 0x00007ff26ac4242c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#21 0x00007ff26f01318c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#22 0x00007ff26efc0bfb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
#23 0x00007ff26efc8ae6 in QCoreApplication::exec() () from /usr/lib64/libQt5Core.so.5
#24 0x00000000004964fb in main (argc=1, argv=<optimized out>) at /usr/src/debug/kdenlive-17.12.1/src/main.cpp:165

Reported using DrKonqi