ghostscript/ImageMagick pdf to png fails

[pixilla (Bradley Giesbrecht)]

Using the supplied pdf "bw_testing.pdf" following command works with ghostscript @8.71_5+no_x11 and fails with ghostscript @9.00_5+no_x11.

convert bw_testing.pdf bw_testing.png

Mac OS X 10.5.x ppc

I thought it may have something to do with the current libpng issues but reverting to ghostscript @8.71_5 with the current libpng is working for me.

I have reverted version of ImageMagick and libpng and pdf to png works with every combination I have tried as long as ghostscript is not greater then 8.71_5.

Here we are working with new libpng and ImageMagick but old ghostscript.

port installed ghostscript ImageMagick libpng | grep active
  ghostscript @8.71_5+no_x11 (active)
  ImageMagick @6.6.7-1_1+no_x11+q32 (active)
  libpng @1.4.5_0 (active)

[ryandesign (Ryan Carsten Schmidt)]

Ok, but I'm not sure what we should do about that here. Sounds like a bug in ghostscript or imagemagick. Have you spoken to their developers?

Also, you should specify what you mean by "fails"; it works for me on Snow Leopard, as far as I can tell.

[jmroot (Joshua Root)]

Please remember to cc the maintainer.

[pixilla (Bradley Giesbrecht)]

Replying to ryandesign@…:

Ok, but I'm not sure what we should do about that here. Sounds like a bug in ghostscript or imagemagick. Have you spoken to their developers?

I have not spoken with the developers but I will.

Also, you should specify what you mean by "fails"; it works for me on Snow Leopard, as far as I can tell.

Sorry, by "fails" I mean the colors in the png are very different then the colors in the pdf.

[pixilla (Bradley Giesbrecht)]

The only place I could reproduce the pdf to png color issues was on my lone ppc machine which is hosting live services.

I setup a second MacPorts installation with prefix /opt/macports-test on this ppc machine and installed ghostscript. The /opt/macports-test/bin/gs program is creating good png's from the same pdf's I was using the with my standard MP install.

Not sure where I go from here. I have force upgraded ghostscript, ImageMagick and php5-imagick several times in my non-test env and my issue creating png's from pdf's remains. If I set the ghostscript version back 8.71_5 in the Portfile and rebuild then the png from pdf works.

[pixilla (Bradley Giesbrecht)]

I am the original reporter and I cannot reproduce this issue on same hardware with clean MacPorts install.