CMYK jpeg -thumbnail giant filesize
Posted: 2011-02-14T15:06:34-07:00
So, I've got a pretty large CMYK jpeg:
http://cf.shacknews.com/shack_images/boxart/145745e.jpg
I am trying to convert it to a 110x156 thumbnail. Using the following command line:
convert 145745e.jpg -colorspace RGB -thumbnail '110x156^' -gravity center -crop 110x156+0+0 test.jpg
On my Mac, which is running an older version of ImageMagick ("Version: ImageMagick 6.5.3-7 2009-06-14 Q16 OpenMP http://www.imagemagick.org"), I get a reasonable 16KB thumbnail.
On our Linux server, running a much more recent repository version ("Version: ImageMagick 6.6.3-9 2010-09-01 Q16 http://www.imagemagick.org"), I get an unreasonable 590KB output file. Same command line.
Any ideas what's going on here?
[EDIT: I just built the latest version of ImageMagick (6.6.7-7) from source on a virgin Linux box and I get the same results - 590KB.]
http://cf.shacknews.com/shack_images/boxart/145745e.jpg
I am trying to convert it to a 110x156 thumbnail. Using the following command line:
convert 145745e.jpg -colorspace RGB -thumbnail '110x156^' -gravity center -crop 110x156+0+0 test.jpg
On my Mac, which is running an older version of ImageMagick ("Version: ImageMagick 6.5.3-7 2009-06-14 Q16 OpenMP http://www.imagemagick.org"), I get a reasonable 16KB thumbnail.
On our Linux server, running a much more recent repository version ("Version: ImageMagick 6.6.3-9 2010-09-01 Q16 http://www.imagemagick.org"), I get an unreasonable 590KB output file. Same command line.
Any ideas what's going on here?
[EDIT: I just built the latest version of ImageMagick (6.6.7-7) from source on a virgin Linux box and I get the same results - 590KB.]