Candidate for Deletion
Note: This software was removed from the Ubuntu repositories after Ubuntu 15.05 (Vivid Vervet). The only supported version it is available for is Ubuntu 14.04 (Trusty Tahr).
Istanbul Desktop Session Recorder
Istanbul records events on your desktop into video files. It's especially helpful for explaining complex tasks visually.
Hints and Tips
If your having trouble getting Istanbul to work, try recording a small areas.
Other applications you may wish to look at