Format for convert command.

[john Culleton]

I use ImageMagick infrequently to convert from RGB to CMYK color model.
This line gives errors:
convert 9781600191022.MAIN.jpeg -colorspace cmyk foo.tiff

Can anyone spot an obvious error?

[john Culleton]

On Sat, 24 Sep 2011 11:20:05 -0400

Post by john Culleton
I use ImageMagick infrequently to convert from RGB to CMYK color
convert 9781600191022.MAIN.jpeg -colorspace cmyk foo.tiff
Can anyone spot an obvious error?

The first error message may give a clue:
Wrong JPEG library version: library is 80, caller expects 62
`9781600191022.MAIN.jpeg' @ error/jpeg.c/EmitMessage/235.

But when I do a find on libjpeg* I get:
/usr/lib/libjpeg.so.8
/usr/lib/libjpeg.a
/usr/lib/libjpeg.la
/usr/lib/libjpeg.so.62.0.0
/usr/lib/java/lib/i386/libjpeg.so
/usr/lib/libjpeg.so
/usr/lib/libjpeg.so.8.0.1
/usr/lib/libjpeg.so.62
/usr/share/libjpeg.so.8
/usr/share/libjpeg.a
/usr/share/libjpeg.so.62.0.0

But let me get the command line syntax correct first. If that is OK
then perhaps I can work on the lib problem.

[Fred Weinhaus]

The command line is fine as long as tiff supports cmyk which I think
it does. Your problem is a conflict between the two libjpeg delegate
library version you have installed. However, I am not an expert on
delegate libraries, so I will defer to any one who knows for sure.

Post by john Culleton
convert 9781600191022.MAIN.jpeg -colorspace cmyk foo.tiff