Cycle through the transition types by rolling the mouse wheel.
Crash happens when reaching the Matte transition.
Thread 257 "RenderThread" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fff7e30a700 (LWP 4685)]
0x00007fffce0a6ed6 in ?? () from /usr/lib/mlt/libmltcore.so
(gdb) thread apply all bt
Thread 257 (Thread 0x7fff7e30a700 (LWP 4685)):
#0 0x00007fffce0a6ed6 in () at /usr/lib/mlt/libmltcore.so
#1 0x00007fffce0a7165 in () at /usr/lib/mlt/libmltcore.so
#2 0x00007ffff6fbf14f in mlt_frame_get_image () at /usr/lib/libmlt.so.6
#3 0x00007ffff6fbf14f in mlt_frame_get_image () at /usr/lib/libmlt.so.6
#4 0x00007fffcda19f77 in () at /usr/lib/mlt/libmltqt.so
#5 0x00007ffff6fbf14f in mlt_frame_get_image () at /usr/lib/libmlt.so.6
#6 0x00007ffff6fbf14f in mlt_frame_get_image () at /usr/lib/libmlt.so.6
#7 0x00007fffcda19bb2 in () at /usr/lib/mlt/libmltqt.so
#8 0x00007ffff6fbf14f in mlt_frame_get_image () at /usr/lib/libmlt.so.6
#9 0x00007ffff6fd53ec in () at /usr/lib/libmlt.so.6
#10 0x00007ffff6fbf14f in mlt_frame_get_image () at /usr/lib/libmlt.so.6
#11 0x00007ffff6fd2807 in () at /usr/lib/libmlt.so.6
#12 0x0000555556bbc0a7 in RenderThread::run() (this=0x604000a1eb90) at /home/farid/kdenlive/src/monitor/glwidget.cpp:1600
#13 0x00007ffff1f8a5b0 in () at /usr/lib/libQt5Core.so.5
#14 0x00007ffff1b6d4cf in start_thread () at /usr/lib/libpthread.so.0
#15 0x00007ffff1a752d3 in clone () at /usr/lib/libc.so.6