https://bugs.kde.org/show_bug.cgi?id=362097
--- Comment #8 from DonnW <don...@yahoo.co.uk> --- I have tried the modified version in the ppa. When I selected create thumbnails with ffmpeg and then restarted Kdenlive it loaded up the project and then crashed before any thumbnails were generated. This happened every time I restarted it. I started a version of a recently compiled kdenlive from the build script, reset the thumbnail generation to not use ffmpeg (to reset the configuration file) and then restarted the installed version. It then worked ok until I reselected ffmpeg option again. I tried running Kdenlive with: gdb kdenlive run then thread apply all bt after it had crashed. this started Kdenlive which was frozen at what looked like thumbnail generation stage. the output from thread apply all bt was: Couldn't get registers: No such process. (gdb) How do I attach or send you a sample video file. My clips are quite large even a short 10s clip is 68Mb which exceeds the allowed size for an attachment -- You are receiving this mail because: You are watching all bug changes.