Bug 513931

Summary:	Rotoscope not cropping clips
Product:	[Applications] kdenlive	Reporter:	gobbe <gobbe5700>
Component:	Audio Effects & Transitions	Assignee:	Jean-Baptiste Mardelle <jb>
Status:	NEEDSINFO WAITINGFORINFO
Severity:	normal
Priority:	NOR
Version First Reported In:	unspecified
Target Milestone:	---
Platform:	NixOS
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	trying crop with rotoscope Track compositing option

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