https://bugs.kde.org/show_bug.cgi?id=495683

            Bug ID: 495683
           Summary: Rendering for some presets is inaccurate
    Classification: Applications
           Product: kdenlive
           Version: 24.08.2
          Platform: Microsoft Windows
                OS: Microsoft Windows
            Status: REPORTED
          Severity: minor
          Priority: NOR
         Component: Rendering & Export
          Assignee: [email protected]
          Reporter: [email protected]
  Target Milestone: ---

Created attachment 175441
  --> https://bugs.kde.org/attachment.cgi?id=175441&action=edit
Example of "corrupted" render

ISSUE AT HAND:
Essentially, whenever rendering a Video as a GIF, MOV or potentially with
others in kdenlive, the end result is inaccurate.
The Video overall renders fine as it is with any other preset (i.e. mp4
rendering has no issues), but with some presets the Video slightly "corrupts"
of some sort (see attached image).

REPRODUCING THE ISSUE:
Simply render any video as a GIF
OR
Render a transparent video as MOV (worst one probably)

OBSERVED & EXPECTED RESULTS:
The video should've rendered with no issues, since the preview inside of
kdenlive doesn't have any issues either.
Yet when viewing the video as a GIF, the corruption appears. I assume this
might be a slight error in the rendering code.

SOFTWARE VERSIONS:
kdenlive: 24.08.2 (newest version as of now)
Windows: Windows 10

ADDITIONAL INFO:
- This Issue does appear with the Rendering presets GIF and MOV (others may
exist too, but these are the most common)
- I don't know if this issue persists on other Operating Systems like MacOS,
Linux or ubuntu
- The Issue seems to also exist in previous versions (I used 22.04.2 before, it
had the exact same problem)
- My kdenlive has not been modded or changed, it is the base newest version
with no changes
- The Issue doesn't change much based on video length or size, but the effects
can be more dramatic with different background colors (i.e. Black appears
glitchy)

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