Via river.

traGtor is a graphical user interface (GUI) for the awesome conversion tool ffmpeg and its fork avconv for the use with Linux-OS.

wget -qO - http://repository.mein-neues-blog.de:9000/PublicKey | sudo apt-key add -
echo "deb http://repository.mein-neues-blog.de:9000/ /" | sudo tee -a /etc/apt/sources.list
apt-get update
apt-get install tragtor

Avec sources : https://github.com/GeoHolz/BootNagios