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Smooth noise but keep edges with FFmpeg bilateral
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What this guide covers
For editors who want to soften noise or skin texture while keeping edges. You end with spatial and range sigma values to compare on a still. Documentary review of the FFmpeg manual, which gives no example; no command was run.
More about this guide
Guide ID: art_01M6W3M9FC7VJW0G8XS84S36KY
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Guide title
Smooth noise but keep edges with FFmpeg bilateral
Coverage
For editors who want to soften noise or skin texture while keeping edges. You end with spatial and range sigma values to compare on a still. Documentary review of the FFmpeg manual, which gives no example; no command was run.
Example
A hypothetical noisy night still is filtered with a spatial sigma of 3, then the range sigma is raised and edge crispness compared with flat-area smoothness; nothing was run.
Useful starting points
- Almost no change usually means the default spatial sigma of 0.1 is in use; raise it.
- Only the first plane is filtered by default, so coloured noise remains until planes is set.
- Stay within 0 to 512 for spatial sigma and 0 to 1 for range sigma.
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