Bug 416883

Summary: Changing the speed of a clip distorts all effects with keyframes
Product: [Applications] kdenlive Reporter: phu <ph.huber>
Component: Video Effects & TransitionsAssignee: Vincent PINON <vpinon>
Status: RESOLVED DUPLICATE    
Severity: minor CC: fritzibaby, julius.kuenzel
Priority: NOR Flags: fritzibaby: Backport+
Version First Reported In: 19.12.1   
Target Milestone: ---   
Platform: Microsoft Windows   
OS: Microsoft Windows   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description phu 2020-01-28 20:14:51 UTC 
SUMMARY

When changing the speed of a clip which has effects with keyframes, the keyframe times are not transformed at all. This lead in wrong keyframe timings and de facto distroy the effects. The keyframes should be scaled according to the clips speed change.

STEPS TO REPRODUCE
1. Create a video project with a brightness effect.
2. Add brightness keyframes with different brightness.
3. Change clip speed.

OBSERVED RESULT

Keyframes are not scaled according to new clip length (clip time)

EXPECTED RESULT

Keyframes should scale according to new clip length so that the effect fits with the video pictures as designed in the original speed.

SOFTWARE/OS VERSIONS
Windows: MS Win10
macOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION
Comment 1 emohr 2020-02-09 18:49:01 UTC 
Confirmed. Doesn't work neither on master.
Comment 2 Julius Künzel 2021-03-02 18:00:24 UTC 

*** This bug has been marked as a duplicate of bug 396921 ***