Bug 513931 - Rotoscope not cropping clips
Summary: Rotoscope not cropping clips
Status: NEEDSINFO WAITINGFORINFO
Alias: None
Product: kdenlive
Classification: Applications
Component: Audio Effects & Transitions (other bugs)
Version First Reported In: unspecified
Platform: NixOS Linux
: NOR normal
Target Milestone: ---
Assignee: Jean-Baptiste Mardelle
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2025-12-28 21:59 UTC by gobbe
Modified: 2025-12-31 09:45 UTC (History)
0 users

See Also:
Latest Commit:
Version Fixed/Implemented In:
Sentry Crash Report:


Attachments
trying crop with rotoscope (3.81 MB, video/mp4)
2025-12-28 22:03 UTC, gobbe
Details
Track compositing option (49.83 KB, image/jpeg)
2025-12-31 09:45 UTC, Jean-Baptiste Mardelle
Details

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Description gobbe 2025-12-28 21:59:33 UTC
SUMMARY
Been trying to use the rotoscope effect in kdenlive to crop videos, doesn't work for me :/

STEPS TO REPRODUCE
1. Open up kdenlive
2. Apply "Rotoscope" effect to a clip
3. Create a rotoskope shape by left clicking to form a shape, and right clicking to close it off 

OBSERVED RESULT
Nothing happens

EXPECTED RESULT
The rotoscope shape is cropped

SOFTWARE/OS VERSIONS
Operating System: NixOS 25.11
KDE Plasma Version: 6.5.3
KDE Frameworks Version: 6.20.0
Qt Version: 6.10.1
Kernel Version: 6.12.59 (64-bit)
Graphics Platform: Wayland
Processors: 12 × Intel® Core™ i5-10400F CPU @ 2.90GHz
Memory: 24 Gibyte of RAM (23.2 Gibyte usable)
Graphics Processor: NVIDIA GeForce GTX 1660 SUPER

ADDITIONAL INFORMATION
Unsure if this is a global error, either way I kinda really want it fixed as I have a bunch of rotoscoped keyframes I don't just wanna scrap
Comment 1 gobbe 2025-12-28 22:03:24 UTC
Created attachment 188051 [details]
trying crop with rotoscope

trying to crop the clip using the "rotoscope" effect and the "rotoscope (mask)" for extra good measure
Comment 2 Jean-Baptiste Mardelle 2025-12-31 09:45:06 UTC
Can you please ensure you have not disabled "Track Compositing" in the timeline top left menu (see screenshot)
Comment 3 Jean-Baptiste Mardelle 2025-12-31 09:45:34 UTC
Created attachment 188107 [details]
Track compositing option