Bug 469416

Summary:	Full Color Range and Same-Track Transitions Conflicting
Product:	[Applications] kdenlive	Reporter:	vi.kurtz
Component:	Rendering & Export	Assignee:	Jean-Baptiste Mardelle <jb>
Status:	REPORTED ---
Severity:	normal	CC:	fritzibaby
Priority:	NOR
Version First Reported In:	23.04.0
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description vi.kurtz 2023-05-06 14:42:18 UTC

SUMMARY
When rendering a video with Full Color Range enabled, any same-track transitions appear to distort the colors of the portion of the video they cover. Namely, those regions of the video become more "washed out", as if reverted to limited color range.

STEPS TO REPRODUCE
1. Create timeline with two separate full color range clips
2. Place them one after the other, then add a same-track transition to them
3. Render the video with Full Color Range enabled

OBSERVED RESULT
Portion of track covered by same-track transition looks more "washed out", a noticeable change in color compared to immediately before and after the transition.

EXPECTED RESULT
Color remains "correct"/not "washed out" through the transition.

SOFTWARE/OS VERSIONS
Linux: 6.3.1
(available in About System)
KDE Plasma Version: 5.27.4
KDE Frameworks Version: 5.105.0
Qt Version: 5.15.9

ADDITIONAL INFORMATION
Color looks correct in the preview in-editor. It is only the rendered video where the transition looks "washed out".

Comment 1 emohr 2023-05-07 10:11:42 UTC

There was a Bug fix about color in MLT framework lately. Please try with the daily AppImage of 7-Jun-2023 if the issue still occurs. https://binary-factory.kde.org/job/Kdenlive_Nightly_appimage-centos7/lastSuccessfulBuild/artifact/