What it is:
A screen capture enabling you to capture videos off your X-Window desktop for illustration or documentation purposes. Video can be saved in MPEG or AVI files format.
It can capture any movement on an X11 display either as single frames (like a number of JPEG images) or it can encode the captured frames to a video on-line.
It can also grab and embed an audio recording provided users have an OSS compatible system and FFMPEG libraries with compiled audio capture support.
sudo apt-get install xvidcap
Application->Sounds&Videos->XVidCap Screen Capture