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Date: Mon, 8 Mar 2010 13:01:46 -0800
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Subject: Re: 1.7.1-1: ImageMagick seems to lack jpeg support
From: Merek Thorondursson <merek DOT thorondursson AT gmail DOT com>
To: cygwin AT cygwin DOT com
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The IM convert command handles jpeg images well.

I'm a novice with ImageMagick, but I don't normally see -geometry
used this way.  I could be wrong with what you're trying to do, but
if you're simply trying to resize a test jpeg with the 600x notation
I'd guess you're resizing with intent to maintain the aspect ratio
and a final width of 600 pixels.  The command line notation I'd use
to do that would be:

>convert test.jpg -resize 600x test-out.jpg

   --- Merek

Hope this helps.  Sorry if I misunderstood the problem.

On 3/8/10, Nick White <cygwin-list AT njw DOT me DOT uk> wrote:
=B7 The command convert, from the ImageMagick suite, doesn't appear to
=B7 have a properly configured jpeg decoder.

=B7 # convert test.jpg -geometry 600x test-out.jpg
=B7 convert: no decode delegate for this image format `test.jpg'.
=B7 convert: missing an image filename `test-out.jpg'.
=B7
=B7 Which would imply that jpegs should be readable and writable by
=B7 convert, which they don't appear to be.

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