Legacy ImageMagick Discussions Archive

When I attempt
> convert myimage.png -dither FloydSteinberg -colors 256 mytestimage.gif
convert: unable to open image 'FloydSteinberg': No such file or directory
>

This is ImageMagick 6.3.7 06/04/09 Q16

Any ideas?

Thanks!

Your version of IM is too old. From the changelog at http://www.imagemagick.org/script/changelog.php


2008-08-14 6.4.2-9 Cristy <quetzlzacatenango@image...>
New dithering selection option, -dither Floyd-Steinberg or -dither Riemersma.


On current versions,


identify -list dither
None
FloydSteinberg
Riemersma