Bug 461346 - chroma key effect broken
Summary: chroma key effect broken
Status: REPORTED
Alias: None
Product: kdenlive
Classification: Applications
Component: Video Effects & Transitions (other bugs)
Version First Reported In: 22.08.2
Platform: Microsoft Windows Microsoft Windows
: NOR major
Target Milestone: ---
Assignee: Jean-Baptiste Mardelle
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2022-11-03 08:16 UTC by Richard
Modified: 2025-05-21 16:44 UTC (History)
1 user (show)

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Description Richard 2022-11-03 08:16:53 UTC 
SUMMARY
***
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STEPS TO REPRODUCE
1.  add a clip that has green background to VL2
2.  add a background clip to VL1
3.  add a chroma key effect to the green screen clip on V2
4. select the green screen colour if not already selected, to make background show through
5. render the video

OBSERVED RESULT

the rendered video shows only the green screen clip complete with green screen background

EXPECTED RESULT

expected the background from V1 to show through the green screen clip from V2

SOFTWARE/OS VERSIONS
Windows: Windows 10 Home
macOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION
Comment 1 Richard 2022-11-07 10:08:25 UTC 
I've found if you change the Edge mode to Skinny from the default then it fails in my tests.
Comment 2 Richard 2022-11-07 10:09:00 UTC 
(When in Skinny mode, the rendered output renders with a background of green, but in the preview window in the editor it works properly)