StudioGo has several tools for authoring, editing Videos and converting them to different formats. Some of the popular editor included are:

KDEenLive

A Non-Linear Video Editing Suite for KDE. Kdenlive uses Piave as it's video rendering engine to display and manipulate video clips

Kdenlive provides dual video monitors, a multi-track timeline and clip list. Other features include customizable layout support, preliminary support for effects..

Jahshaka

OpenSource Realtime Editing and Effects System.

With Jahshaka, Create Effects in real time, Edit with flexibility and speed, Animate with unlimited features, Paint and design on moving video and do more

KMediaFactory

An easy to use template based dvd authoring tool. You can quickly create DVD menus for home videos and TV recordings in three simple steps.

Kino

Kino is a non-linear DV editor for GNU/Linux. It features excellent integration with IEEE-1394 for capture, VTR control, and recording back to the camera.

It captures video to disk in Raw DV and AVI format, in both type-1 DV and type-2 DV (separate audio stream) encodings.

Lives

The Linux Video Editing System. Lets you start editing and making video right away, without having to worry about formats, frame sizes, or framerates.

LiVES will let you start creating your own tools, utilities and effects via the built in RFX builder