https://bugs.kde.org/show_bug.cgi?id=488742
Bug ID: 488742
Summary: Combining two transform result in huge quality loss
Classification: Applications
Product: kdenlive
Version: 24.05.0
Platform: Appimage
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Effects & Transitions
Assignee: j...@kdenlive.org
Reporter: tobias.b...@gmail.com
Target Milestone: ---
Created attachment 170638
--> https://bugs.kde.org/attachment.cgi?id=170638&action=edit
Video showing bug
SUMMARY
When I apply on the same image two transform (one scaling down to 25% and one
doing nothing), the quality is suddenly super bad.
STEPS TO REPRODUCE
1. Start KDEnlive and import in the project a png image (see attachments)
2. Insert the png in the timeline
3. Add to this new clip an effect Transform, and set scale to 25%. Observe the
preview in reasonable quality.
4. Drag a second Transform on the object. Observe how the quality suddenly
dropped (in both preview and exported video)
OBSERVED RESULT
Bad quality
EXPECTED RESULT
No quality loss when applying an identity filter.
SOFTWARE/OS VERSIONS
Operating System: NixOS 24.05
KDE Plasma Version: 5.27.10
KDE Frameworks Version: 5.115.0
Qt Version: 5.15.12
Kernel Version: 6.1.80 (64-bit)
Graphics Platform: X11
Processors: 8 × Intel® Core™ i5-8365U CPU @ 1.60GHz
Memory: 15.5 Gio of RAM
Graphics Processor: Mesa Intel® UHD Graphics 620
ADDITIONAL INFORMATION
I need this as the second transform is used to track an object.
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