SUMMARY If drag & drop an effect of a clip from one Kdenlive instance to another, the target Kdenlive will segfault. I found that there are other similar reports (https://bugs.kde.org/show_bug.cgi?id=377581 , https://bugs.kde.org/show_bug.cgi?id=398791) which state that this is currently not implemented. However, IMO it still shouldn't segfault. My intention was to copy effects with complex parameters (such as Lift/Gamma/Gain or Curves) from an older project to a newer one. And yes, I'm aware of the library and I very well use it, but in this case I don't know how to do it because I only need the effect and its parameters and not a sequence of a video. STEPS TO REPRODUCE 1. Open 2 instances of Kdenlive. 2. Add a clip to the timeline of both instances. 3. Add an effect to the clip in the timeline of one of the instances of Kdenlive. 4. Drag & drop this effect to the 2nd instance's timeline clip. OBSERVED RESULT Immediate segfault. `segfault at d8 ip 0000000000b5fe20 sp 00007fffc6e27388 error 4 in kdenlive[75fe20,4d3000+9c6000] likely on CPU 11 (core 11, socket 0)` EXPECTED RESULT Effect dropped on the clip. SOFTWARE/OS VERSIONS Operating System: Kubuntu 25.04 KDE Plasma Version: 6.3.4 KDE Frameworks Version: 6.12.0 Qt Version: 6.8.3 Kernel Version: 6.14.0-33-generic (64-bit) ADDITIONAL INFORMATION Tested with the current app image 25.08.1 as well as with s a self-compiled version 25.08.2 checkout out from git release/25.08 #0c7bd834ec.
Git commit 587b1c73465812d6c41ed03c363d8d77e1de4b88 by Jean-Baptiste Mardelle. Committed on 06/10/2025 at 07:40. Pushed by mardelle into branch 'master'. Fix crash dragging effect from another window FIXED-IN: 25.08.2 M +24 -6 src/core.cpp M +4 -0 src/timeline2/model/timelineitemmodel.cpp https://invent.kde.org/multimedia/kdenlive/-/commit/587b1c73465812d6c41ed03c363d8d77e1de4b88
Git commit 0953f92cf91aac4485a8f538cb5893283870d9bd by Jean-Baptiste Mardelle. Committed on 06/10/2025 at 16:49. Pushed by mardelle into branch 'release/25.08'. Fix crash dragging effect from another window FIXED-IN: 25.08.2 M +24 -6 src/core.cpp M +4 -0 src/timeline2/model/timelineitemmodel.cpp https://invent.kde.org/multimedia/kdenlive/-/commit/0953f92cf91aac4485a8f538cb5893283870d9bd