https://bugs.kde.org/show_bug.cgi?id=414575
Bug ID: 414575
Summary: Melt issue with Box Blur and Rectangular Alpha Mask
Product: kdenlive
Version: 19.08.3
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Video Display & Export
Assignee: j...@kdenlive.org
Reporter: oli...@projectalpha.co.uk
Target Milestone: ---
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
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