Developing OpenVidu

Prerequisites 🔗

Dependency Check version Install
Java 11 JDK java -version sudo apt-get install -y openjdk-11-jdk
Maven mvn -v sudo apt-get install -y maven
Node node -v sudo curl -sL | sudo bash -
sudo apt-get install -y nodejs

Compiling OpenVidu Server 🔗

1) Clone OpenVidu parent repository and install local dependencies. This is only necessary the first time you compile openvidu-server

git clone
cd openvidu
mvn -DskipTests=true clean install

2) Build openvidu-server

cd openvidu-server
mvn clean compile package # Will output the JAR file in folder ./target

Compiling OpenVidu Server dashboard 🔗

1) You need Angular to compile OpenVidu Server dashboard:

sudo npm install -g @angular/cli

2) Enter the Angular project and install NPM dependencies. This is only necessary the first time you compile openvidu-server dashboard

cd openvidu/openvidu-server/src/dashboard
npm install

3) Build the project. This npm command will copy the output files into the static files folder of openvidu-server. Next time you compile openvidu-server it will serve this last compilation of the dashboard.

npm run build
# For production compilation: npm run build-prod

Building OpenVidu Server Docker container 🔗

To build openvidu/openvidu-server Docker container you first need to have the JAR of openvidu-server already compiled. Follow instructions Compiling OpenVidu Server to build it from scratch.

Once you have the openvidu-server JAR, copy it to folder openvidu/openvidu-server/docker/openvidu-server, being openvidu/ the folder where repository was cloned. We will also need the content in folder openvidu/openvidu-server/docker/utils :

# Run this located at folder openvidu/openvidu-server/docker/openvidu-server
# It will copy at this path the content of "utils" folder
cp ../utils/* .

Now we can build the docker container (of course Docker must be installed)

# Set whatever TAG you want
docker build -t openvidu/openvidu-server:TAG .

Compiling OpenVidu Browser 🔗

1) Clone OpenVidu parent repository and install openvidu-browser dependencies

git clone
cd openvidu/openvidu-browser
npm install

2) Build openvidu-browser

npm run build

3) To install openvidu-browser as local NPM dependency

sudo npm link

# You can link this local dependency to any project that has openvidu-browser as
# dependency in its package.json, by calling "sudo npm link openvidu-browser"

4) To obtain static JavaScript files

VERSION=2.0.0 npm run browserify # Regular JS version
VERSION=2.0.0 npm run browserify-prod # Minified JS version

# Static files will be built in path ./static/js/

Compiling OpenVidu Call 🔗

Just follow instructions at openvidu-call demo page.

Compiling OpenVidu WebComponent 🔗

1) Clone OpenVidu Call repository (openvidu-webcomponent is compiled from it) and install dependencies

git clone
cd openvidu-call/openvidu-call-front
npm install

2) Build openvidu-webcomponent (Unix systems)

npm run build:openvidu-webcomponent

2) Build openvidu-webcomponent (Windows)

npm run build-win:openvidu-webcomponent

If you want to test your OpenVidu WebComponent changes, you can clone openvidu-tutorials repository in the same path as openvidu-call repository, and the command npm run build:openvidu-webcomponent will automatically update the webcomponent files of openvidu-webcomponent tutorial. Make sure the version of webcomponent static files is the same as the imported ones in the HTML of the tutorial.

# Same path as "git clone"
git clone
# Serve the tutorial. Build command of the webcomponent will update its files
http-server openvidu-tutorials/openvidu-webcomponent/web

Compiling OpenVidu Angular Library 🔗

These steps build openvidu-angular NPM library from the source code.

1) Clone OpenVidu Call repository (openvidu-angular library is compiled from it) and install dependencies

git clone
cd openvidu-call/openvidu-call-front
npm install

2) Build openvidu-angular library (Unix systems)

npm run build:openvidu-angular

2) Build openvidu-angular library (Windows)

npm run build-win:openvidu-angular

This will build openvidu-angular library into folder openvidu-call/openvidu-call-front/dist/openvidu-angular, being openvidu-call/ the folder where the repository was cloned. You can pack your compilation to install it as a local NPM dependency in any application. Just run the pack command in the output path:

cd dist/openvidu-angular
npm pack

This will generate in that same folder a file openvidu-angular-{VERSION}.tgz. You can install that file in any NPM project simply by running npm install openvidu-angular-{VERSION}.tgz. For example, tutorial openvidu-library-angular uses openvidu-angular dependency, and you can install your compilation in it to see your changes.

Running KMS 🔗

Run KMS in any OS that supports Docker with the following command:

docker run -d --name kms -p 8888:8888 kurento/kurento-media-server:latest

Latest development version can be executed with:

docker run -d --name kms -p 8888:8888 kurento/kurento-media-server-dev:latest

Here you can check Kurento's official documentation.

Example: setup for development 🔗

Here we show how to develop an Angular app (openvidu-testapp) with openvidu-browser and openvidu-server as local dependencies, waiting to be modified as you want. You can install Angular with sudo npm install -g @angular/cli.

1) Run Kurento Media Server

2) Clone repo:

git clone

3) openvidu/openvidu-browser/

npm install
npm run build
sudo npm link

4) openvidu/

mvn -DskipTests=true install

5) openvidu/openvidu-testapp/

npm install
npm link openvidu-browser
ng serve

6) openvidu/openvidu-server/

# Must indicate to OpenVidu Server the domain, port and secret


(or if you prefer you can just run the Java application in your favourite IDE)

At these point, you can start modifying openvidu-testapp, openvidu-browser or openvidu-server.

  • openvidu-testapp : the "ng serve" command will take care of refreshing the browser's page whenever any change takes place

  • openvidu-browser : after modifying any typescript file, you will need to run the following command to update your changes:

    /openvidu/openvidu-browser: npm run build

  • openvidu-server : after modifying any file, there is no other alternative but to re-launch the java application if you want to update your changes

    /openvidu/openvidu-server: mvn clean exec:java

    (or re-launch the Java application in your IDE. Some IDE's support automatic re-launch in response to changes)

Example: setup for advanced development (share the app through your network) 🔗

You can also use different machines in the same network to build a more advanced development environment, so you can test the application in different devices at the same time. It's very similar to the process outlined above:

Run exactly the same commands as in the previous section, but:

  1. On step 5) extend ng serve command with:

    ng serve --host --ssl
  2. On step 6) extend mvn exec:java command with:

    # Being HOST_LOCAL_IP the local IP that your machine serving the app has in your LAN network

This way we first tell AngularCLI to serve our app through https and to expose the port in our LAN network, and secondly we set OpenVidu Server public url to the public IP of the machine in our LAN network. This way our devices will be able to reach it as long as they are connected to the same network.

To connect to the application from any device, be sure to be connected to the same LAN network and navigate to https://HOST_LOCAL_IP:4200 (being HOST_LOCAL_IP the local IP that your machine serving the app has in your LAN network).