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When trying to transcode an input to x265 ffmpeg tells me "preset veryslow not found":

ffmpeg -i <in_file> -vf scale=xxx:yyy -c:v hevc -preset veryslow <out_file>
monochromec
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  • I’m voting to close this question because , as the ffmpeg tag states: Only questions about programmatic use of the FFmpeg libraries, API, or tools are on topic. Questions about interactive use of the command line tool should be asked on https://superuser.com/ or https://video.stackexchange.com/. Please delete this. – Rob Jul 17 '23 at 14:42

1 Answers1

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ffmpeg needs to be compiled with both the corresponding development versions of the required libraries and the corresponding encoders/decoders enabled when invoking configure at the beginning of the build process.

In case of the Debian, this would include libx265-dev and the configure option --enable-libx265 for the corresponding x265 / HEVC preset to be included in the corresponding binary.

monochromec
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