[magick-users] Reading PNG with transparency broken

[Miro Dietiker]

Hi magicks

I right switched from source files JPG to PNG source images in a database.

Aim was to introduce transparency.

Now we end up in problem:

Source: (10MB)
http://www.frankonia-net.ch/VZ800_M800K8_YAY_1.png
Output: (200k)
http://www.frankonia-net.ch/SUZUKI_M800K7_BIG.jpg

The background should be completely transparent but containing faulty 
filled blocks...

It is being converted with command:
$ convert -antialias -size 1024x1024 "VZ800_M800K8_YAY_1.png"'[0]' 
-density 72 -resize 1024x1024 -strip -format jpg -colorspace RGB 
-quality 95 "SUZUKI_M800K7_BIG.jpg"
And even with much reduced result is still identical:
$ convert -size 1024x1024 "VZ800_M800K8_YAY_1.png" -resize 1024x1024 
-format jpg -quality 95 "SUZUKI_M800K7_BIG.jpg"

This is debian imagemagick:
Version: ImageMagick 6.0.6 02/11/07 Q16 http://www.imagemagick.org
Copyright: Copyright (C) 1999-2004 ImageMagick Studio LLC

Shall i try to switch to TIF instead as workaround? :-S

Any idea would be appreciated...
Should this go into dev list? :-S

Many thanks!
--
Miro