Just node.js. On Mac and Windows, every else is installed automatically. However on Linux, you must install HandbrakeCLI manually with these commands:
sudo add-apt-repository --yes ppa:stebbins/handbrake-releases
sudo apt-get update -qq
sudo apt-get install -qq handbrake-cli
# Install dependencies
$ npm install
# Configure Web Server port
$ nano config/default.json
{
"port" : 3000
}
# Building frontend code
$ npm run watch
$ Running Web Server
$ npm run dev-server