Bug 503806 - Edge Crop effects do not stack
Summary: Edge Crop effects do not stack
Status: REPORTED
Alias: None
Product: kdenlive
Classification: Applications
Component: Video Effects & Transitions (other bugs)
Version First Reported In: 24.12.1
Platform: Other Linux
: NOR normal
Target Milestone: ---
Assignee: Jean-Baptiste Mardelle
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2025-05-05 18:54 UTC by Jonathan Gilbert
Modified: 2025-05-05 18:54 UTC (History)
0 users

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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