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Colour-correct video with FFmpeg curves: key points, presets and plots
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What this guide covers
For editors who want precise tone and colour adjustments in FFmpeg. You end with a clip adjusted by per-channel curve points or a preset, plus a way to plot the curves. Based on the FFmpeg filters manual; no command was run, and judging colour needs a trusted display.
More about this guide
Guide ID: art_01M6V1080MDJ90AH1H6WD00FWM
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Guide title
Colour-correct video with FFmpeg curves: key points, presets and plots
Coverage
For editors who want precise tone and colour adjustments in FFmpeg. You end with a clip adjusted by per-channel curve points or a preset, plus a way to plot the curves. Based on the FFmpeg filters manual; no command was run, and judging colour needs a trusted display.
Example
A hypothetical slightly yellow shot where a small mid-tone blue lift is tried; the direction of the change is inferred from the curve model and the result was not seen.
Useful starting points
- With the default points the curve is the identity line, so the image should not change.
- Key points must increase strictly along x and stay between 0 and 1; values outside the range are clipped.
- A steep curve can cause banding or crushed blacks; use gentler points or monotonic interpolation.
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