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Swap two rectangles in a video frame with FFmpeg swaprect

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What this guide covers

For editors wanting a quick split-and-swap effect or a layout test, with positions that can follow frame number or time. It is based on the FFmpeg filters manual, which has no worked example, and no command was run.

More about this guide

Guide ID: art_01M6VTP57HPEB0D74N5MDBKTBS

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Guide title

Swap two rectangles in a video frame with FFmpeg swaprect

Coverage

For editors wanting a quick split-and-swap effect or a layout test, with positions that can follow frame number or time. It is based on the FFmpeg filters manual, which has no worked example, and no command was run.

Example

A hypothetical 1280 by 720 clip with two 200 by 200 squares swapped on the top row; nothing was run and the result was not observed.

Useful starting points

  • Keep both rectangles fully inside the frame and apart; the manual does not describe overlap behaviour.
  • Quote the filter string so the shell does not mangle expressions.
  • Check the first frame and a mid-clip frame to confirm the swap and that the rest of the frame is unchanged.
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