Created attachment 177424 [details] crash log SUMMARY Stabilizing a clip in Kdenlive on Fedora results in Kdenlive freezing and sometimes crashing. STEPS TO REPRODUCE 1. Go to Clip Jobs and Stabilize on a longer 4K Clip OBSERVED RESULT Kdenlive often freezes, although sometimes succeeds. Rarely it crashes. SOFTWARE/OS VERSIONS Linux/KDE Plasma: Linux fedora 6.12.9-200.fc41.x86_64 with XFCE KDE Plasma Version: NA KDE Frameworks Version: NA Qt Version: 6.8.1 ADDITIONAL INFORMATION I attached the crash report, although I'm unable to get it to crash again while running with gdb. It's mostly freezing and not crashing. I have tried a few older versions of qt6 Kdenlive, they all had the same issue. This problem is not present on Ubuntu 23.10 on the same machine. Two separate Fedora 41 installs were tested. "dnf install kdenlive" was tried, as well as AppImage with the same result.
Thank you for reporting. That could be a mem-leak or you run out of memory. Check the memory consumption and the CPU usage while stabilizing a 4K clip.
(In reply to emohr from comment #1) > Thank you for reporting. That could be a mem-leak or you run out of memory. > > Check the memory consumption and the CPU usage while stabilizing a 4K clip. I did monitor it. It is not running out of ram. I have the zram set to a 3X system ram which is 16GB, so there's lots of swap and it's not being used at all when the problem happens. There is something strange going on with RAM usage though, after using Kdenlive for a longer time on a big project, the RAM and swap keep filling up more and more while previewing the timeline. I have to restart Kdenlive to free it. I didn't have this problem on Ubuntu, but I have no idea why memory management would be different on Fedora. While stabilizing, Kdenlive is at 2-10% CPU normally, but when the problem happens it jumps to 100% CPU and freezes like that until I terminate it. Any ideas what I could try? I installed irqbalance and tried some kernels parameters but there's no improvement. It's not very usable like this, so I'll have to switch back to Ubuntu if I don't find a fix. Thanks!
Please try with the latest AppImage version 24.12.2 to see if the issue still exists. https://kdenlive.org/en/download/
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(In reply to emohr from comment #3) > Please try with the latest AppImage version 24.12.2 to see if the issue > still exists. https://kdenlive.org/en/download/ Tried 5 stabilize jobs, and all were successful. Looks like it's fixed.
Thank you for your feedback. Glad to here it works. I close this bug. If it still appears in the latest version, please feel free to re-open it and update the affected version number.