[magick-users] cropping animated gifs

[Anthony Thyssen]

On Tue, 24 Mar 2009 10:20:19 +0000
Lex Thoonen <Lex at peng.nl> wrote:

| Hi Magick-users,
| 
| I'using ImageMagick in a cgi script, to resize & crop uploaded mages
| to the desired format for the particular site.
| 
| All is well, for jpg.
| 
| But when I try a (animated) gif, it goes wrong. It crops away the parts that need
| to be cut away, but leaves them in the canvas so to say. I mean, the
| sizes of the images haven't changed.
| 
| You can see what i mean here:
| http://www.allesoversterrenkunde.nl/test/upload.html
| 
| Here's what I do:
| 
|       $cropcommand = $MaxFullimgX ."x" . $MaxFullimgY ."+" . $cropwidth ."+" . $cropheight ;
|       $image->Crop( geometry=>$cropcommand , gravity=>'Center' ); # crop the image
| 
| 
| Now, at this page: http://tinyurl.com/cfkopm
| 
| an answer is to a similar question is:
| 
| To do it properly use...
|     convert jumping_egg.gif -crop 146x167+20+25! cropped.gif
| 
| 
| Is there someone who knows if/how I can convert this to work in my cgi
| script? (And if that's the way forward?)
| 
| Thanks,
| 
| -- 
The '!' is part of the geometrystring which IM parses, you can just it
to the $cropcommand string.


  Anthony Thyssen ( System Programmer )    <A.Thyssen at griffith.edu.au>
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     Anthony's Home is his Castle     http://www.cit.gu.edu.au/~anthony/