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Copyright © 2013-2016 Kurento. Licensed under Apache 2.0 License.

Kurento tutorial for Node.js

Examples on usage of the Kurento Node.js Client.

This project contains a set of simple applications built with JavaScript Kurento Client APIs (kurento-client-js and kurento-utils-js) for Node.js.

The source code of this project can be cloned from the GitHub repository.

Installation instructions

Be sure to have installed Node.js in your system:

curl -sL | sudo -E bash -
sudo apt-get install -y nodejs

It is recommended to update NPM to the latest version:

sudo npm install npm -g

Install node modules and bower components

npm install

Run the application and have fun ...

npm start


The Node.js server accept an optional parameter with the URI of the MediaServer WebSocket endpoint, being set by default at ws://localhost:8888/kurento. You can define its value by using the ws_uri flag:

npm start -- --ws_uri=ws://

It also accept an optional parameter with the URI of the application server root that will serve the overlay image, being by default at https://localhost:8443/. You can define its value by using the as_uri flag:

npm start -- --as_uri=

For example, if you would like to start the node server in the localhost using the port 8081, then the command is the following:

npm start -- --as_uri=https://localhost:8081/

Please notice that the double dash separator (--) is on purpose.


What is Kurento

Kurento is an open source software project providing a platform suitable for creating modular applications with advanced real-time communication capabilities. For knowing more about Kurento, please visit the Kurento project website:

Kurento is part of FIWARE. For further information on the relationship of FIWARE and Kurento check the Kurento FIWARE Catalog Entry

Kurento is part of the NUBOMEDIA research initiative.


The Kurento project provides detailed documentation including tutorials, installation and development guides. A simplified version of the documentation can be found on The Open API specification a.k.a. Kurento Protocol is also available on


Code for other Kurento projects can be found in the GitHub Kurento Group.

News and Website

Check the Kurento blog Follow us on Twitter @kurentoms.

Issue tracker

Issues and bug reports should be posted to the GitHub Kurento bugtracker

Licensing and distribution

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Contribution policy

You can contribute to the Kurento community through bug-reports, bug-fixes, new code or new documentation. For contributing to the Kurento community, drop a post to the Kurento Public Mailing List providing full information about your contribution and its value. In your contributions, you must comply with the following guidelines

  • You must specify the specific contents of your contribution either through a detailed bug description, through a pull-request or through a patch.
  • You must specify the licensing restrictions of the code you contribute.
  • For newly created code to be incorporated in the Kurento code-base, you must accept Kurento to own the code copyright, so that its open source nature is guaranteed.
  • You must justify appropriately the need and value of your contribution. The Kurento project has no obligations in relation to accepting contributions from third parties.
  • The Kurento project leaders have the right of asking for further explanations, tests or validations of any code contributed to the community before it being incorporated into the Kurento code-base. You must be ready to addressing all these kind of concerns before having your code approved.


The Kurento project provides community support through the Kurento Public Mailing List and through StackOverflow using the tags kurento and fiware-kurento.

Before asking for support, please read first the Kurento Netiquette Guidelines