Cinelerra is a free and open source software non-linear video editing system for the Linux operating system. (However, it has also been successfully ported to Mac OS X.) It is produced by Heroine Virtual, and is distributed under the GNU General Public License. Cinelerra also includes a video compositing engine, allowing the user to perform common compositing operations such as keying and mattes.
Install Cinelerra in Ubuntu Gutsy
First you need to edit the sources.list file using the following command:
sudo gedit /etc/apt/sources.list
and enter the following lines: