This was tested on kdenlive-18.08-beta17-x86_64.AppImage Steps to reproduce: Add clip Drag it to the very beginning of the timeline Press play, then pause Bug can be reproduced only on clean new project. error: Assertion fctx->async_lock failed at libavcodec/pthread_frame.c:153
I can reproduce, thanks for your report. Will investigate in the next days
Thank you for the crash report. As it has been a while since this was reported, can you please test and confirm if this issue is still occurring or if this bug report can be marked as resolved. I have set the bug status to "needsinfo" pending your response, please change back to "reported" or "resolved/worksforme" when you respond, thank you.
Can't reproduce it on stable kdenlive-20.08.3b-x86_64 or daily kdenlive-21.03.70-a3e0b15-x86_64.appimage. Fixed.