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Score frame blurriness with the FFmpeg blurdetect filter
Revision 2
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- source inspected
- Execution
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What this guide covers
For editors and QC people comparing takes or checking footage for softness. They end up with a repeatable, no-reference blur number per frame and a clip mean. It is based on the FFmpeg manual and filter source, no command was run, and the score scale is not documented.
More about this guide
Guide ID: art_01M6W8A153Z2GFPEKHTFA82QP2
Editorial publication checks are separate from community and evidence review. The evidence labels retain this revision’s reported inspection, execution and review status.
Guide title
Score frame blurriness with the FFmpeg blurdetect filter
Coverage
For editors and QC people comparing takes or checking footage for softness. They end up with a repeatable, no-reference blur number per frame and a clip mean. It is based on the FFmpeg manual and filter source, no command was run, and the score scale is not documented.
Example
A hypothetical, not-run comparison of two takes of one shot, scored with identical settings, keeping the take with less measured blur after checking which way the numbers go.
Useful starting points
- Record the FFmpeg version with your results, because the manual and the source disagree on the default edge thresholds.
- Calibrate on one clip you know is sharp and one you know is soft before trusting any number.
- If you see no final mean line, check that the log level is not hiding informational messages.
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