I finally solved it this way:

convert file.GIF file.BMP
convert file.BMP +matte file.BMP

The second step makes it from 32 bits/pixel to 24 bits/pixel.

Would be nice to have it in one step though.

--
Chris Christoph P. U. Kukulies kuku_at_kukulies.org

On Wed, Jun 14, 2006 at 01:11:23PM +0200, Christoph P. Kukulies wrote:
> On Wed, Jun 14, 2006 at 03:17:51PM +1000, Anthony Thyssen wrote:
> > "Christoph P. Kukulies" on  wrote...
> > | I'm trying to convert a 32 bit GIF to a 24bit BMP file using
> > | convert. But somehow I fail.
> > | 
> > | doing a
> > | convert file.GIF file.BMP
> > | 
> > | give a 32 bit BMP file
> > | 
> > | convert -colors 16777216 file.bmp out.bmp 
> > | 
> > | still gives a 32 bit BMP file.
> > | 
> > As you are wanting a 24 bit image, rather than 32 bit I assume thn that
> > the BMP image will conatin no transparency.  As such try removing the
> > transparent, or matte cannel from image...
> > 
> >   convert file.GIF  +matte  file.BMP
> > 
> > That should be 24 bit.
> 
> It does not seem to work. file.BMP is still 32 bit
> 
> 
> G:\>convert --version
> Version: ImageMagick 6.2.7 04/14/06 Q16 http://www.imagemagick.org
> Copyright: Copyright (C) 1999-2006 ImageMagick Studio LLC
> 
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