Bug 427017 - Colors->Levels seems to work in the UI, but rendering is unaffected.
Summary: Colors->Levels seems to work in the UI, but rendering is unaffected.
Status: RESOLVED FIXED
Alias: None
Product: kdenlive
Classification: Applications
Component: Video Effects & Transitions (other bugs)
Version First Reported In: 20.08.1
Platform: Microsoft Windows Microsoft Windows
: NOR critical
Target Milestone: ---
Assignee: Vincent PINON
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2020-09-27 08:47 UTC by Per Frøysa
Modified: 2020-10-07 13:34 UTC (History)
1 user (show)

See Also:
Latest Commit:
Version Fixed/Implemented In:
Sentry Crash Report:
fritzibaby: timeline_corruption+

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Description Per Frøysa 2020-09-27 08:47:26 UTC 
SUMMARY
No effect of Colors->Levels in rendered output

STEPS TO REPRODUCE
1. Insert a clip in timeline
2. Apply Color->Level and adjust Input white level 
3. Render timeline

OBSERVED RESULT
No change in levels

EXPECTED RESULT
A brighter picture

SOFTWARE/OS VERSIONS
Windows: Windows 10 Pro build 19042.541
macOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION
Fade in clip works.
Comment 1 emohr 2020-09-27 15:10:57 UTC 
In the render dialog -> disable "parallel processing" and try again.
Comment 2 Per Frøysa 2020-09-29 18:36:26 UTC 
(In reply to emohr from comment #1)
> In the render dialog -> disable "parallel processing" and try again.

I tried this, but found that only the red component was affected. I did select the "Luma" channel.

Then I switched to Lift/gamma/gain and adjusted the gamma, and this worked fine!

Problem solved!
Comment 3 emohr 2020-10-07 13:34:58 UTC 
Thank you for the feedback. Glad to hear it works. 

We close this bug. If it still appears in the latest version, please feel free to re-open it and update the affected version number.