https://bugs.kde.org/show_bug.cgi?id=474802
            Bug ID: 474802
           Summary: All rotation effects cause black borders
    Classification: Applications
           Product: kdenlive
           Version: 23.08.1
          Platform: Other
                OS: Other
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: Effects & Transitions
          Assignee: j...@kdenlive.org
          Reporter: krzes...@gmail.com
  Target Milestone: ---

SUMMARY
***
If you, for example, accidentally record a video in portrait mode while holding
the smartphone horizontally, Kdenlive won't be able to fix it:

The "Rotate" and "Rotate and Shear" effects crop the video for some reason upon
rotating, as well as leave it zoomed out with black borders.
The Transform effect rotates it properly, but still leaves it zoomed out with
black borders around, forcing you to zoom in by about 178% to make the video
fit the project. I suspect this zooming could be lossy. There needs to be a
proper way to rotate videos.
***


STEPS TO REPRODUCE
1. Import a portrait video to the timeline (for example 720x1280)
2. Make sure your project has the right resolution (1280x720 in this case)
3. Try to use "Rotate", "Rotate and Shear" and "Transform" to rotate the video
90 degrees.

OBSERVED RESULT
"Rotate" and "Rotate and Shear" result in the video being cropped AND having
black borders.
"Transform" results in just black borders.

EXPECTED RESULT
No black borders, no cropped sides.

SOFTWARE/OS VERSIONS
Windows: 10 22H2 19045

ADDITIONAL INFORMATION
Some of the Rotate and Shear tool's options seems to be redundant on top of the
Rotate tool.
Example video:
https://drive.google.com/file/d/17rKsYaoTZKAguU1Bc80zRCJGG6M3fhon/view?usp=sharing

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