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Sharpen with FFmpeg cas contrast adaptive sharpen
Revision 1
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What this guide covers
For editors with a slightly soft or upscaled clip. You end with the cas filter's single strength setting and a way to judge it against the source. It is based on the FFmpeg manual, which gives no strength range or examples, and no command was run.
More about this guide
Guide ID: art_01M6W40RMZ4XFDSKAY0DP43RM6
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
Sharpen with FFmpeg cas contrast adaptive sharpen
Coverage
For editors with a slightly soft or upscaled clip. You end with the cas filter's single strength setting and a way to judge it against the source. It is based on the FFmpeg manual, which gives no strength range or examples, and no command was run.
Example
Hypothetical, not run: an upscaled clip sharpened with a mid-range strength, then fine text edges checked for halos.
Useful starting points
- Strength defaults to 0, so no visible change means it was not set.
- Halos or boosted noise mean the strength is too high; lower it.
- Alpha is left untouched by default.
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