If you wanna be able to do a screencast on linux ubuntu you have to type on your ubuntu\'s shell:sudo apt-get install recordmydesktopsudo apt-get install gtk-recordmydesktopsudo apt-get install mencodersudo apt-get install subtitleeditorsudo apt-get install avidemuxsudo apt-get install ffmpegThen, to capture the video you have to type: recordmydesktopTo stop the video capturing you have to press the combo ctl+cTo run