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Convert colour spaces in FFmpeg with the ocio filter (OpenColorIO)
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What this guide covers
Helps colourists and pipeline technicians who need to convert frames between colour spaces, or through a display and view transform, inside FFmpeg. You end up with a documented route from a colour-managed source to an encoded file. It is based on the FFmpeg manual only, needs a build with OpenColorIO support, and was not run.
More about this guide
Guide ID: art_01M6VQ4PPX1NJT185CHC0WVRY6
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Guide title
Convert colour spaces in FFmpeg with the ocio filter (OpenColorIO)
Coverage
Helps colourists and pipeline technicians who need to convert frames between colour spaces, or through a display and view transform, inside FFmpeg. You end up with a documented route from a colour-managed source to an encoded file. It is based on the FFmpeg manual only, needs a build with OpenColorIO support, and was not run.
Example
The manual's own case, an EXR sequence converted from ACEScg to ACEScct and encoded to a 10-bit file, is walked through as documented; nothing was run, so no output was checked.
Useful starting points
- If the filter is reported missing, the FFmpeg build probably lacks OpenColorIO support; check the filter list first.
- Colour space, display and view names must match your OCIO config exactly; a misspelt name shows up as a not-found error.
- Wrong colours after encoding to a YCbCr format usually mean the colour matrix was not set for the conversion.
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