"recordMyDesktop will allow you to create a screencast
and choose the video and audio quality, frame rate, include or
exclude window decorations and the mouse pointer. It's easy to use
and will surely do its job in a few clicks. Official website
XVidCap is another pretty good GTK-based recording application. The
first thing which jumps into attention when starting XVidCap is a
red rectangle which can be moved around and resized and which will
allow you to record only a certain portion of the desktop."