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Apply a 3D LUT file to video with FFmpeg's lut3d filter
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What this guide covers
For editors and colourists who want to apply a .cube or similar LUT file to a clip in FFmpeg and pick how the colour table is interpolated. You end with a graded clip and a way to compare it against the source. It is based on the FFmpeg manual only and no command was run.
More about this guide
Guide ID: art_01M6VM5DCRRQ32378328NBG3XF
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Guide title
Apply a 3D LUT file to video with FFmpeg's lut3d filter
Coverage
For editors and colourists who want to apply a .cube or similar LUT file to a clip in FFmpeg and pick how the colour table is interpolated. You end with a graded clip and a way to compare it against the source. It is based on the FFmpeg manual only and no command was run.
Example
A hypothetical log-to-Rec.709 conversion rendered three times with different interpolation modes, then compared on a sky gradient. Nothing was run, so no result is claimed.
Useful starting points
- Check which colour space the LUT expects before applying it; a mismatch is the usual reason colours look wrong.
- Compare against the source on smooth gradients, where banding or stepping from interpolation would show.
- If nothing changes, the LUT may be an identity table or the wrong file; try one with an obvious effect.
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