https://bugs.kde.org/show_bug.cgi?id=424057
Bug ID: 424057
Summary: Fade effect is blackish instead or real fade
Product: kdenlive
Version: 20.04.1
Platform: Ubuntu Packages
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Effects & Transitions
Assignee: vpi...@kde.org
Reporter: bima...@gmail.com
Target Milestone: ---
Hello,
I added two images. One is background white image and second is transparent PNG
image. I applied fade-in effect in transparent PNG image. But the fade-in
effect is not pure trasparent and blackish at starting of fade effect. This
same effect is working perfectly with Openshop. I compared same with OpenShot
and it's working perfectly. So I created a video to give you preview:
https://streamable.com/e159ke
I also tried with different PNG images but the problem still exists.
STEPS TO REPRODUCE:
1. Add a background white image.
2. Add a PNG transparent effect and apply fade-in effect
3. Now see the starting frame of the fade-in effect. It will be blackish
instead of pure opacity. See this video https://streamable.com/e159ke
OBSERVED RESULT:
I think the opacity engine is not working properly.
EXPECTED RESULT:
I added Openshot demo too in the video and you can see it what I am expecting.
SOFTWARE/OS VERSIONS
Kdenlive version: 20.04.1
Linux/KDE Plasma: Kubuntu 20.04
(available in About System)
KDE Plasma Version: Not sure but latest in Kubuntu 12.04
KDE Frameworks Version: 5.68
Qt Version: 5.12.8
ADDITIONAL INFORMATION
I tried Kdenlive version which comes apt-get command. I think the bug appear
due to old version. So I updated Kdenlive with PPA on Ubuntu:
https://launchpad.net/~kdenlive/+archive/ubuntu/kdenlive-stable
But still problem exists.
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