Bug 492519

Summary:	The "vertigo" effect significantly darkens the clip and creates a black frame at the start of the clip it is applied to.
Product:	[Applications] kdenlive	Reporter:	kymanisawesome
Component:	Video Effects & Transitions	Assignee:	Jean-Baptiste Mardelle <jb>
Status:	CONFIRMED ---
Severity:	minor	CC:	berndmj, nate
Priority:	NOR
Version:	unspecified
Target Milestone:	---
Platform:	Microsoft Windows
OS:	Microsoft Windows
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description kymanisawesome 2024-09-02 04:43:17 UTC

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SUMMARY
When using the effect, it produces an annoying black frame at the start of whatever it is applied to.

STEPS TO REPRODUCE
1. Use Vertigo on any image or video.
2. Thats it. Thats all it takes.


OBSERVED RESULT
When first applied, the video or image looks a bit darker. When exported, it shows a black frame for a split second when the video reaches the section with the image or video, that has the vertigo effect applied to it.

EXPECTED RESULT
No black frame at the start.

SOFTWARE/OS VERSIONS
Windows: 22H2
macOS: 
(available in the Info Center app, or by running `kinfo` in a terminal window)
Linux/KDE Plasma: 
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION
None of note.

Comment 1 Bernd 2024-09-05 22:04:02 UTC

Which version of Kdenlive?

Comment 2 kymanisawesome 2024-09-06 11:31:12 UTC

(In reply to Bernd from comment #1)
> Which version of Kdenlive?

It says 24.11.70. And this has been a constant problem even before this version.

Comment 3 Bernd 2024-09-06 14:00:10 UTC

(In reply to kymanisawesome from comment #2)
> (In reply to Bernd from comment #1)
> > Which version of Kdenlive?
> 
> It says 24.11.70. And this has been a constant problem even before this
> version.

Ah, ok. This is one of the nightly builds. Can you test it with the latest version 24.08? I can confirm this for 24.08 (flatpak) on Linux.

Comment 4 Bernd 2024-09-06 14:40:48 UTC

Adding the Vertigo effect immediately makes the video in the project monitor darker. Changing the preferred composition in Settings does not affect this behavior at all.

Comment 5 kymanisawesome 2024-09-27 01:40:03 UTC

Checked with 24.08.01, issue still persists.