Bug 503806

Summary: Edge Crop effects do not stack
Product: [Applications] kdenlive Reporter: Jonathan Gilbert <c6kargn6hz>
Component: Video Effects & TransitionsAssignee: Jean-Baptiste Mardelle <jb>
Status: REPORTED ---    
Severity: normal    
Priority: NOR    
Version First Reported In: 24.12.1   
Target Milestone: ---   
Platform: Other   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Jonathan Gilbert 2025-05-05 18:54:37 UTC 
SUMMARY
If you place two Edge Crop effects into the same stack, the resulting output video is scaled incorrectly.

STEPS TO REPRODUCE
1. Add a video to a KDEnlive project and place it onto the timeline.
2. Add two Edge Crop effects to the clip's effect stack.
3. Alter the parameters of the top effect.

OBSERVED RESULT
The Edge Crop removes the requested pixels, but then the clip is scaled incorrectly, distorting the aspect ratio.

EXPECTED RESULT
The result of two Edge Crop effects should be the same as the result of a single Edge Crop filter with the parameters equal to the sum of the two.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Ubuntu 24.04 LTS
KDE Plasma Version: 5.27.12
KDE Frameworks Version: 5.115.0
Qt Version: 5.15.13