https://bugs.kde.org/show_bug.cgi?id=515196
Bug ID: 515196
Summary: Crop, Scale and Tilt video effect crashes rendering
with title clip and some duration conditions
Classification: Applications
Product: kdenlive
Version First 25.12.1
Reported In:
Platform: Debian testing
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Video Effects & Transitions
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
SUMMARY
Project contains title clip has crashed rendering with Crop, Scale and Tilt
video effect at several length threshold. Little tweak of effect can prevent
rendering crash.
STEPS TO REPRODUCE
1. Add empty Title clip to project bin with default 00:00:05 duration;
2. Add this clip to video timeline;
3. Go to Effects tab, find "Crop, Scale, and Tilt" effect and drag and drop it
to video timeline with title clip;
4. Select video (title clip) on timeline and go to effect tuning window;
5. Add keyframe at the end of video;
6. Select (pre-existing) keyframe at the start of video;
7. Move "Crop Right" seek bar to max value. So we create effect that cropping
right side of video from full to zero from start to and of video;
8. Save project;
9. Render project with default settings;
10. Increase length of video to 3m 50s;
11. Render video again, rendering will crashes;
12. Reduce video length to half of previous value;
13. Render it again, it will crashes;
14. Reduce video length much more (for exmple, 1m 00s); it will be rendered
successful;
15. So you can find some video length threshold of rendering crashing;
16. Make video length so big that crashes rendering;
17. Go to "Crop, Scale, and Tilt" tuning window, select firsr keyframe and
decrease "Crop right" value for 1 (for example from 1280 to 1279);
18. Start rendering video. It will renders successful.
OBSERVED RESULT
Video with titleclip rendering crashes over some length threshold.
It can be solved by reducing crop length by 1.
EXPECTED RESULT
Video with titleclip renders on every length.
Video effect not needed to be hacked.
SOFTWARE/OS VERSIONS
Windows: Windows 10 Pro
macOS:
(available in the Info Center app, or by running `kinfo` in a terminal window)
Linux/KDE Plasma: Debian Live Testing (forky/sid), codename 'forky'
KDE Plasma Version: LXQT 2.3.0
KDE Frameworks Version: 6.20.0
Qt Version: qt-6.9.2, qt-5.15.17
ADDITIONAL INFORMATION
Reproduced on older versions in Linux and 25.12.1 on Windows.
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