Output as ICON

[Innocentus]

I want to output a favicon (.ico / .icon) with ImageMagick's convert-tool.

I tried the following command on the commandline for the convert-tool:

convert testfile.jpg -resize 20x20! ICO:-

But I only get

11

as output.

But when I use the command:

convert testfile.jpg -resize 20x20! JPG:-

It works - I get a jpeg but I want an icon.

Why can I get a jpeg - but no icon?
Thank you very much for your help and support!
With best regards!
Innocentus

[jpiquemal]

Hello
convert testfile.jpg -resize 20x20! resize.ico
works well with IM 6.3.9-1

convert testfile.jpg -resize 20x20! ICO:-
works too but gives a dump of the icon