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Denoise grainy video with FFmpeg atadenoise and nlmeans
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What this guide covers
For editors cleaning noisy footage in FFmpeg. You end with a comparison of a temporal and a patch-based denoiser on a short excerpt and a chosen setting. Based on the FFmpeg manual; no command was run, and the manual gives no speed or quality comparison.
More about this guide
Guide ID: art_01M6VK82QNZDMXRCF7KNWBRE9C
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Guide title
Denoise grainy video with FFmpeg atadenoise and nlmeans
Coverage
For editors cleaning noisy footage in FFmpeg. You end with a comparison of a temporal and a patch-based denoiser on a short excerpt and a chosen setting. Based on the FFmpeg manual; no command was run, and the manual gives no speed or quality comparison.
Example
A hypothetical grainy night clip rendered three ways at trial settings within the documented ranges; which is best was not determined because nothing was run.
Useful starting points
- Test on a 5 to 10 second excerpt with flat areas, texture and motion before processing a full file.
- Ghosting on moving subjects points to too many averaged frames; a plastic look points to too much nlmeans strength.
- Patch and research sizes, and the atadenoise frame count, must be odd numbers.
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