https://bugs.kde.org/show_bug.cgi?id=500873
emohr <fritzib...@gmx.net> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|REPORTED |CONFIRMED
Ever confirmed|0 |1
Keywords| |triaged
CC| |fritzib...@gmx.net
--- Comment #1 from emohr <fritzib...@gmx.net> ---
Here a first analysis
The project uses following filters:
FFMPEG filter: Gaussian Blur, DBlur, Average Blur, Planes Blur, Smartblur
frei0r filter: Square Blur
MLT Filter: BoxBlur (This filter is deprecated. Use the box_blur filter
instead) -> In the project box_blur is applied. It seems the same parameter is
taken from BoxBlur for box_blur. Documentation is linking only to BoxBlur for
both filters. And the box_blur filter is only partly documented
https://docs.kdenlive.org/en/effects_and_filters/video_effects/deprecated/box_blur.html
but it should be this filter:
https://www.mltframework.org/plugins/FilterAvfilter-boxblur/
First thoughts
This is definitely a Kdenlive issue with alpha integration. Shotcut works well
with boxblur and gaussian blur effect.
Remarks
Planes Blur should be named boxblur
https://ffmpeg.org/ffmpeg-filters.html#boxblur:
https://docs.kdenlive.org/de/effects_and_filters/video_effects/blur_and_sharpen/planes_blur.html
Smartblur: I think the 3 alpha parameters are missing
https://ffmpeg.org/ffmpeg-filters.html#smartblur-1
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