Bug 439194

Summary: Effects on clips (in project bin) stop being applied to timeline clip zones
Product: [Applications] kdenlive Reporter: Ryan K <ryan.kelln>
Component: Video Effects & TransitionsAssignee: Jean-Baptiste Mardelle <jb>
Status: RESOLVED FIXED    
Severity: minor CC: fritzibaby
Priority: NOR Keywords: triaged
Version First Reported In: 21.04.2Flags: fritzibaby: Backport+
Target Milestone: ---   
Platform: Appimage   
OS: Linux   
Latest Commit: https://invent.kde.org/multimedia/kdenlive/-/commit/f2a05da290cccdc9398f4b49241da379a19891a8 Version Fixed/Implemented In: 25.04.2
Sentry Crash Report:

Description Ryan K 2021-06-26 19:01:32 UTC 
SUMMARY
Effects applied to clips in project bin (e.g. Chroma Key dragged onto entire clip in project bin) stop being applied to the zones/copies of that clip in the timeline. Disabling and then re-enabling the associated timeline clips fixes the issues. Note that all of the timeline zone clips must be selected at the same time when doing the workaround, otherwise the unselected clips will have their project bin effects unapplied.

I am not sure exactly what else might trigger the "forgetting" of the project bin clip effects.

STEPS TO REPRODUCE
1. Drag project bin clip into timeline twice.
2. Drag effect (e.g. Chroma Key) onto a clip in project bin.
3. Disable and re-enable one of the clips in timeline (there may be other triggers but this one seems reliable).
4. The other clip will now lose it's effects.
5. Select both clips and disable and re-enable them both. Both clips will have effects applied.  

OBSERVED RESULT
Clip zones no longer have project bin clip effects applied.

EXPECTED RESULT
Clip zones always reflect the effects of bin clip effects.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 
Ubuntu 18.04
AppImage 21.04.2
Comment 1 emohr 2021-06-27 09:48:29 UTC 
Thank you for reporting. I can confirm this behavior. Only selecting both clips and disable/enable clip in the timeline brings back the effect on both clips.
Comment 2 Jean-Baptiste Mardelle 2025-05-23 11:29:29 UTC 
Git commit f2a05da290cccdc9398f4b49241da379a19891a8 by Jean-Baptiste Mardelle.
Committed on 23/05/2025 at 11:29.
Pushed by mardelle into branch 'release/25.04'.

Fix bin clip effects disappear after disabling a timeline clip
FIXED-IN: 25.04.2

M  +0    -8    src/bin/projectclip.cpp
M  +0    -1    src/timeline2/view/timelinecontroller.cpp

https://invent.kde.org/multimedia/kdenlive/-/commit/f2a05da290cccdc9398f4b49241da379a19891a8