[Digikam-users] slightly OT question: convert jpg->png

[Daniel Bauer]

Hi,

when I convert jpgs's to png's in digikam with compression 5 they get approx. 
half as big (in MBs) as if I convert them using 
"convert xy.jpg -quality 50 -strip -verbose xy.png"

I thought "-quality 50" in imagemagick equals to "compression 5" in 
digiKam/gimp, but obviously I'm wrong. Can somebody tell me how I can achieve 
the same compression in imagemagick as in digiKam?

thanks a lot...

Daniel

(When I have many pics to convert I prefer imagemagick, because I can start 
several jobs and then go out having a coffee or two, while my PC does the hard 
work... On my old machine with OpenSuse 11.2 digiKam crashes when I start a 
batch job and then try to add a new batch job from another folder/album while 
the first one is already running. I guess this is a problem of my machine and 
not of digiKam, unless others tell me that they see the same)
-- 
Daniel Bauer photographer Basel Barcelona
professional photography: http://www.daniel-bauer.com