cmd.exe /c start /B /wait /low " " "c:\imgk\convert.exe" "##input##" -define png:format=png24 "##1##.png"
cmd.exe /c start /B /wait /low " " "c:\imgk\convert.exe" "##1##.png" -filter box -resize 25%% "##2##.png"
cmd.exe /c start /B /wait /low " " "c:\imgk\convert.exe" "##2##.png"  -dither FloydSteinberg "c:\results\##nameonly##.gif"

:::: Imagemagik exemple
:::: convert the input file to a 24bits png file
:::: then resize the 24 bits png file to 25%
:::: and convert the 25% file to a dithered gif file

