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Convert farbfeld to ppm
ff2ppm [-b
colour]
ff2ppm reads a farbfeld(5) image from stdin, converts it to PPM (16-Bit RGB P6 binary format) and writes the result to stdout.
In case of an error ff2ppm writes a diagnostic message to stderr.
-b colour
Blend the transparent colours with colour specified as rgb, rrggbb or rrrrggggbbbb. The default is fff.
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Image processed successfully.
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An error occurred.
$ ff2ppm < image.ff > image.ppm
$ bunzip2 < image.ff.bz2 | ff2ppm -b 0f0 > image.ppm
Unchanged in 4 releases since Debian 10 (Buster).