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Denoise with a DCT threshold using FFmpeg dctdnoiz
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What this guide covers
For editors with noisy clips or stills who want a frequency-domain denoiser and a realistic idea of its speed cost. You end with the manual's own strength and block-size examples to try on a short test clip. Based on the FFmpeg manual and not run; no quality or timing results are reported.
More about this guide
Guide ID: art_01M6W645FRWFFFW80WJ44SA53V
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
Denoise with a DCT threshold using FFmpeg dctdnoiz
Coverage
For editors with noisy clips or stills who want a frequency-domain denoiser and a realistic idea of its speed cost. You end with the manual's own strength and block-size examples to try on a short test clip. Based on the FFmpeg manual and not run; no quality or timing results are reported.
Example
A hypothetical noisy still run at a moderate strength and then at the manual's strong setting with larger blocks, comparing lost detail and timing; nothing was run.
Useful starting points
- Test on a short clip first; the manual says the filter is not designed for real time.
- If nothing seems to happen, the strength may still be at its default of zero.
- If a warning appears and borders stay noisy, the overlap setting does not fit the picture size.
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