My suggestion is to use the proper window ID of your FF.

Anyway it's not working 100% from shell on my Ubuntu/Gnome box, parts of the images are always broken.

But since this is not a perl issue, you should better ask in a linux forum or report to ImageMagick.

Cheers Rolf

UPDATE: contact

In reply to Re: Screencapture with Perl on Linux by LanX
in thread Screencapture with Perl on Linux (SOLVED) by sadarax

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