Here is a guide to install LiVES video editor. You can install LiVES using the ferramroberto ppa for LiVES or you can download the source files from this page.
To install LiVES using the ferramroberto ppa open a terminal windows (press Ctrl+Alt+T) and copy+paste the following lines:
sudo add-apt-repository ppa:ferramroberto/lives
sudo apt-get update
sudo apt-get install lives
To start LiVES press Alt+F2 and type: lives
LiVES mixes realtime video performance and non-linear editing in one professional quality application. It will let you start editing and making video right away, without having to worry about formats, frame sizes, or framerates…
LiVES Homepage