Posted: 2005-11-03T19:20:26-07:00
We tried your command on our Intel 3ghz Redhat box with ImageMagick 6.2.5-4 and the command completed in 20.88 seconds. Not sure why its taking so long on your box. You might speed things up a bit if you use the Q8 version of ImageMagick. The default is usually Q16 (16 bits-per-pixel).