https://bugs.kde.org/show_bug.cgi?id=464974

            Bug ID: 464974
           Summary: Edge Crop Effect: Automatic center crop
    Classification: Applications
           Product: kdenlive
           Version: 22.12.1
          Platform: Other
                OS: Microsoft Windows
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: Effects & Transitions
          Assignee: j...@kdenlive.org
          Reporter: lark...@gmail.com
  Target Milestone: ---

SUMMARY
when working with files that are not the projects aspect ratio, (eg, project
profile ratio 900x900 and inserting a 1920x1080 file. it will have to be
cropped to remove empty black space)

in the  "edge crop" effect, you have the TOGGLE feature "automatic center crop"
to do a 'scale to fill' and underneath that toggle, you have "center balance"
slide bar to adjust the focus area  - this does not not pan / cover the whole
image, from 0-100 pans only in one direct from the center. usually up from
center if its a vertical pan, left if its horizontal. missing down or right
from 0 being the very center.

my current workaround:  untick the auto centre crop and manually crop the sides
until i get the scale to fill, and often after render find black screen lines
on the very edges that i missed. having the auto crop feature would save me so
much time and effort.

all my work is focused on slideshows and i deal with at least 200 images and
short videos / gifs. this is my most used effect but it isnt a finished effect.



STEPS TO REPRODUCE
1. new project profile, different from sample file frame aspect ratio. eg
900x900 Square
2. insert the desired sample clip / image. different to project profile eg
1920x1080 rectangle
3. "edge crop" effect - tick the "automatic center crop" TOGGLE.  
4. in the "center balance" slide bar, adjust it to try and pan down the crop
from center or right from center

OBSERVED RESULT
only pans / moves focus up or left. 

EXPECTED RESULT
to pan fully up/down on vertical outscaled clips. and left/right on horizontal
outscaled clips

SOFTWARE/OS VERSIONS
Windows: 10

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