Bug 427017

Summary:	Colors->Levels seems to work in the UI, but rendering is unaffected.
Product:	[Applications] kdenlive	Reporter:	Per Frøysa <per>
Component:	Video Effects & Transitions	Assignee:	Vincent PINON <vpinon>
Status:	RESOLVED FIXED
Severity:	critical	CC:	fritzibaby
Priority:	NOR	Flags:	fritzibaby: timeline_corruption+
Version First Reported In:	20.08.1
Target Milestone:	---
Platform:	Microsoft Windows
OS:	Microsoft Windows
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

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.