Kdenlive is a non-linear video editing suite, which supports DV, HDV and many more formats. Its main features are:

 * Guides and marker for organizing timelines
 * Copy and paste support for clips, effects and transitions
 * Real time changes
 * FireWire and Video4Linux capture
 * Screen grabbing
 * Exporting to any by FFMPEG supported format

After the installation of K Desktop environment:
$ sudo apt-get install kdenlive

You can install KXStudio version of Kdenlive. To install KXStudio see the correpondent guide.
