Avidemux Quick Start for Ubuntu 15.04 Vivid
Hi! The Tutorial shows you Step-by-Step How to Install and Getting-Started with the Latest Avidemux Release on Ubuntu 15.04 Vivid Vervet GNU/Linux Desktop.
The Latest Avidemux installation is Provided by the Work and Gentle Concession of the GetDeb Project Developers.
Avidemux is a Free Video Editor designed for simple Cutting, Filtering and Encoding tasks. It supports many File Types, including AVI, DVD compatible MPEG files, MP4 and ASF, using a variety of Codecs. Tasks can be automated using projects, job queue and powerful scripting capabilities

Open a Shell Terminal emulator session
Ctrl+Alt+t on Desktop
(Press “Enter” to Execute Commands)In case first see: Terminal QuickStart Guide.
How to Add GetDeb Repos for Ubuntu
Installing GetDeb Repos on Ubuntu.
cd ~/Downloads
sudo dpkg -i getdeb-repo*.deb
If Got “User is Not in Sudoers file” then see: How to Enable sudo
Refreshing Ubuntu Repositories.
sudo apt-get update
Click on Link to Install Avidemux for Ubuntu
Or from Shell:
sudo apt install avidemux2.6-qt
Confirm to Open with Ubuntu Software Center on Browser
Click on Install to Get the Avidemux Installation