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Add a directional streak blur with FFmpeg dblur
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What this guide covers
For editors who want a motion-streak look on a clip or still, set by angle and radius. You end with a blur in one chosen direction and a test routine to find which way an angle value points. Based on the FFmpeg manual only; nothing was run and the manual does not define the angle convention.
More about this guide
Guide ID: art_01M6W8JY5MPAV79SP5DJ7F89ZW
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Guide title
Add a directional streak blur with FFmpeg dblur
Coverage
For editors who want a motion-streak look on a clip or still, set by angle and radius. You end with a blur in one chosen direction and a test routine to find which way an angle value points. Based on the FFmpeg manual only; nothing was run and the manual does not define the angle convention.
Example
A hypothetical speed-line effect on a title card, trying one angle and radius to see which way the streak runs. Not run.
Useful starting points
- Test the direction on an image with a clear edge before trusting an angle value you have not seen.
- If the result is too soft, lower the radius; if the colour edges stay sharp, include all planes.
- The default angle is 45 and the default radius is 5, so the filter without options already blurs diagonally.
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