Bug 455053 - Vectorscope image error on mask usage
Summary: Vectorscope image error on mask usage
Status: RESOLVED FIXED
Alias: None
Product: kdenlive
Classification: Applications
Component: Rendering & Export (other bugs)
Version First Reported In: 22.04.1
Platform: Microsoft Windows Microsoft Windows
: NOR normal
Target Milestone: ---
Assignee: Jean-Baptiste Mardelle
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2022-06-08 22:14 UTC by thaylor.peter
Modified: 2022-07-27 13:20 UTC (History)
1 user (show)

See Also:
Latest Commit: https://invent.kde.org/multimedia/kdenlive/commit/e0f68346d015180a0ccce2fd740bb3598f359a4a
Version Fixed/Implemented In: 22.08
Sentry Crash Report:
fritzibaby: Brainstorm+

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Description thaylor.peter 2022-06-08 22:14:33 UTC 
SUMMARY
If I use a mask (rotoscoping) on a track, the vectorscope image will be wrong. 


STEPS TO REPRODUCE
1. Put any video having people in it
2. Mask out a portion of the skin (only skin should be visible)
3. Check that the vectorscope has nothing on the skintone line, rather in the direct opposite part of the circle.

OBSERVED RESULT
Vectorscope image is missleading.

EXPECTED RESULT
Skin tones should be on the skintone line.

SOFTWARE/OS VERSIONS
Windows: 11 21H2
macOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION
Comment 1 emohr 2022-07-20 11:53:36 UTC 
Thank you for reporting. I can confirm this issue following your steps. 

When you use the rotoscope effect, no matter on track or on the clip the skin tone in the vectorscope is in the blue region not on the skin region (as you stated).
Comment 2 emohr 2022-07-20 12:24:52 UTC 
See Bug 453149 as well.