Dear Maintainer, hello Laura Arjona Reina, I just tried to have a look at this crash.
Unfortunately given information point to no exact location. In that case the line from dmesg would already be helpful: [ 609.690904] kamoso[28487]: segfault at 0 ip 000055bc679e7fd5 sp 00007ffc474fd950 error 4 in kamoso[55bc679d3000+2b000] A good information would be just to run it that way: gdb -q -ex run -ex bt -ex detach -ex quit --args kamoso Another way would be to install a core dump collector like systemd-coredump and execute something like this: coredumpctl list coredumpctl gdb <PID> Even better when debug symbols are installed like described in [1]. Nevertheless I could reproduce a crash in a minimal stretch amd64 qemu VM, with a forwarded usb webcam. (gdb) bt #0 0x000055bc679e7fd5 in WebcamControl::play (this=this@entry=0x7ffc474fdc80, device=0x55bc68b82220) at ./src/video/webcamcontrol.cpp:135 #1 0x000055bc679e8bfd in WebcamControl::WebcamControl (this=0x7ffc474fdc80) at ./src/video/webcamcontrol.cpp:86 #2 0x000055bc679e071f in main (argc=<optimized out>, argv=0x7ffc474fdde8) at ./src/main.cpp:43 (gdb) print cameraSource $1 = {m_class = 0x0} 134 auto cameraSource = QGst::ElementFactory::make("wrappercamerabinsrc", "video_balance"); 135 cameraSource->setProperty("video-source-filter", bin); That "wrappercamerabinsrc" points to a missing package gstreamer1.0-plugins-bad. Maybe you can confirm that installing that package avoids the crash, if you still run a stretch installation that shows it. This crash got fixed upstream in [2]. Kind regards, Bernhard [1] https://wiki.debian.org/HowToGetABacktrace [2] https://cgit.kde.org/kamoso.git/commit/?id=1ff5f14fedd42bfa61ae181e0c598ec991ba4407