Kurento Tutorials

This section contains tutorials showing how to use Kurento framework to build different types of WebRTC and multimedia applications. These tutorials come in three flavors:

  • Java: Showing applications where clients interact with Spring Boot-based applications, that host the logic orchestrating the communication among clients and control Kurento Media Server capabilities.
  • Browser JavaScript: These show applications executing at the browser and communicating directly with the Kurento Media Server. In these tutorials all logic is directly hosted by the browser. Hence, no application server is necessary.
  • Node.js: In which clients interact with an application server made with Node.js technology. The application server holds the logic orchestrating the communication among the clients and controlling Kurento Media Server capabilities for them.

Note

The tutorials have been created with learning objectives. They are not intended to be used in production environments where different unmanaged error conditions may emerge. Use at your own risk!

Note

These tutorials require HTTPS in order to use WebRTC. Following instructions will provide further information about how to enable application security.

Hello World

This is one of the simplest WebRTC applications you can create with Kurento. It implements a WebRTC loopback (a WebRTC media stream going from client to Kurento Media Server and back to the client)

WebRTC Magic Mirror

This web application consists on a WebRTC loopback video communication, adding a funny hat over detected faces. This is an example of a Computer Vision and Augmented Reality filter.

RTP Receiver

This web application showcases reception of an incoming RTP or SRTP stream, and playback via a WebRTC connection.

WebRTC One-To-Many broadcast

Video broadcasting for WebRTC. One peer transmits a video stream and N peers receive it.

WebRTC One-To-One video call

This web application is a videophone (call one to one) based on WebRTC.

WebRTC One-To-One video call with recording and filtering

This is an enhanced version of the the One-To-One application with video recording and Augmented Reality.

WebRTC Many-To-Many video call (Group Call)

This tutorial connects several participants to the same video conference. A group call will consist (in the media server side) in N*N WebRTC endpoints, where N is the number of clients connected to that conference.

Media Elements metadata

This tutorial detects and draws faces present in the webcam video. It connects filters: KmsDetectFaces and the KmsShowFaces.

WebRTC Media Player

This tutorial reads a file from disk and plays the video to WebRTC.

WebRTC outgoing Data Channels

This tutorial injects video into a QR filter and then sends the stream to WebRTC. QR detection events are delivered by means of WebRTC Data Channels, to be displayed in browser.

WebRTC incoming Data Channel

This tutorial shows how text messages sent from browser can be delivered by Data Channels, to be displayed together with loopback video.

WebRTC recording

This tutorial has two parts:

  1. A WebRTC loopback records the stream to disk.
  2. The stream is played back.

Users can choose which type of media to send and record: audio, video or both.

WebRTC repository

This is similar to the recording tutorial, but using the repository to store metadata.

WebRTC statistics

This tutorial implements a WebRTC loopback and shows how to collect WebRTC statistics.