Bug 472551

Summary: Rotate" effect turns the black background of MOVIES purple in some places
Product: [Applications] kdenlive Reporter: fehler-im-programm
Component: Video Effects & TransitionsAssignee: Jean-Baptiste Mardelle <jb>
Status: RESOLVED DUPLICATE    
Severity: normal    
Priority: NOR    
Version First Reported In: 23.04.3   
Target Milestone: ---   
Platform: Other   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:
Attachments: "Contaminated" project file
Bug 'Rotieren' with Movie
Bug 'Rotieren' with Movie (Screenshot)

Description fehler-im-programm 2023-07-23 22:01:56 UTC
Created attachment 160479 [details]
"Contaminated" project file

The phenomenon appears suddenly at some point. Opening an existing project is sufficient.
Emergency solution: Copy all clips into a new project.

STEPS TO REPRODUCE
Cannot be reproduced in new project. I have to attach the "contaminated" project. 
See attachment.

OBSERVED RESULT
Background turns slightly purple (only visible in the dark)

EXPECTED RESULT
Background remains unchanged (black)
Comment 1 fehler-im-programm 2023-07-23 22:05:58 UTC
Created attachment 160480 [details]
Bug 'Rotieren' with Movie
Comment 2 fehler-im-programm 2023-07-23 22:06:33 UTC
Created attachment 160481 [details]
Bug 'Rotieren' with Movie (Screenshot)
Comment 3 Jean-Baptiste Mardelle 2023-07-24 11:36:19 UTC
Thanks for your report. This was caused by a change in MLT (our video backend) that broke the color parameter for some effects (Rotate, Position and Zoom, and Rotate and Shear).
This has now been fixed in git: https://invent.kde.org/multimedia/kdenlive/-/commit/6feb13f87e6b16b9a3917ae6d66da7d876a9e444
and will be fixed in 23.08.0, to be released in one month.

*** This bug has been marked as a duplicate of bug 472449 ***