Restricting the recording to a single window cannot be
done directly while recording.
Therefore please proceed as follows to get the same end-result:
With any export filter you can select an arbitrary rectangular area when exporting to any target format.
This is done using the option --rectangle widthxheight+x+y
To speed this up, I suggest playing back the video with DemoRecorder
and making a screenshot with gimp.
gimp displays the coordinates of the mouse cursor within a gimp-window. Based on these coordinates you can get some good values for the numbers.
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A comparison of screencasting apps for Linux (including DemoRecorder)
(first published in Linux Format Magazine, issue July 2009.)
Interview on the Linux Link Tech Show. Please select Episode 154.
DemoRecorder featured in Linux-User Magazine (in German)
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BTW, the website DemoRecorder.com is hosted on Neue Medien Münnich ( all-inkl.com ) in Europe.
The US download mirror ist hosted on Host Gator .