Bug 414575 - Melt issue with Box Blur and Rectangular Alpha Mask
Summary: Melt issue with Box Blur and Rectangular Alpha Mask
Status: RESOLVED WORKSFORME
Alias: None
Product: kdenlive
Classification: Applications
Component: Rendering & Export (other bugs)
Version First Reported In: 19.08.3
Platform: Other Microsoft Windows
: NOR normal
Target Milestone: ---
Assignee: Jean-Baptiste Mardelle
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2019-11-27 14:19 UTC by Oliver Dixon
Modified: 2021-03-22 13:38 UTC (History)
2 users (show)

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


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Description Oliver Dixon 2019-11-27 14:19:27 UTC
SUMMARY
Firstly masking a section of a clip appears to be a challenge without producing it this way. In order to blur a logo, a copy of a clip on one track was copied to a second higher track. A Box Blur was applied along with an Alpha Mask. The preview window displays the correct output, however when rendering the video it is as if the track is not there.

STEPS TO REPRODUCE
1. Load a clip to V1
2. Copy the same clip to V2
3. Apply a box blur and rectangular alpha mask to clip on V2 and observe in preview
4. Render the video (Using WebM codec) and observe blur is not present

OBSERVED RESULT
See points 3 and 4 above. Blur on track present in preview, but is not present in the final render

EXPECTED RESULT
Blur on track should be present on both preview and final render. Hope you can shed some light on this matter

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

ADDITIONAL INFORMATION
Comment 1 emohr 2019-12-01 16:40:29 UTC
Tested with upcoming 19.12 version. It works as expected. 

Try with Windows_Nightly_Build:
https://binary-factory.kde.org/job/Kdenlive_Nightly_mingw64/lastSuccessfulBuild/artifact/
Comment 2 farid 2021-03-07 21:13:28 UTC
Can you please provide feedback after testing latest version?
Comment 3 Bug Janitor Service 2021-03-22 04:33:37 UTC
Dear Bug Submitter,

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