https://bugs.kde.org/show_bug.cgi?id=435974
Bug ID: 435974
Summary: Transparent PNG not working with wipes
Product: kdenlive
Version: 20.12.3
Platform: Appimage
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Effects & Transitions
Assignee: vpi...@kde.org
Reporter: m...@juergaltwegg.ch
Target Milestone: ---
SUMMARY
Transparent PNG not working with wipes. It did work until version 20.12.1b
STEPS TO REPRODUCE
1. Import a PNG picture in top timeline
2. Import any movie, picture or color clip in the timelime below
3. Attach a wipe (i.e. dissolve) to the PNG
4. Check in preview monitor; the PNG fades in as expected
5. Render to MP4: The rendered file fades to white
OBSERVED RESULT
The rendered MP4-file fades to white; it seems that the alpha channel has not
been used.
EXPECTED RESULT
Fade in of the PNG on top of the movie clip in the timeline below.
SOFTWARE/OS VERSIONS
Windows: -
macOS: -
Linux/KDE Plasma: Ubuntu 20.04 with Gnome
(available in About System)
KDE Plasma Version:
KDE Frameworks Version: 5.76.0
Qt Version: 5.14.2
ADDITIONAL INFORMATION
In earlier KDEnlive versions (until and including 20.12.1b) wipes with
transparent PNG worked fine.
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