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    0.0.19 • Public • Published


    html5_rtsp_player.js is a Javascript library which implements RTSP client for watching live streams in your browser that works directly on top of a standard HTML element. It requires support of HTML5 Video with Media Sources Extensions for playback. Also player relies on server-side websocket proxy for retransmitting RTSP streams to browser.

    It works by muxing RTP h.264 and MP4A-LATM payload into ISO BMFF (MP4) fragments.

    html5_rtsp_player.js is written in ECMAScript6, and transpiled in ECMAScript5 using Babel.

    Live test stream

    Link to server running with websock_rtsp_proxy and test page

    Browser support:

    • Firefox v.42+
    • Chrome v.23+
    • OSX Safari v.8+
    • MS Edge v.13+
    • Opera v.15+
    • Android browser v.5.0+
    • IE Mobile v.11+

    Not supported in iOS Safari and Internet Explorer


    npm install git://


    Browser side

    Attach HTML Video with RTSP URL

    <video id="test_video" controls autoplay src="rtsp://your_rtsp_stream/url"></video>

    Setup player in your js:

    import * as rtsp from 'rtsp_player';
    rtsp.RTSP_CONFIG['websocket.url'] = "ws://websocket_proxy_address/ws"; // You should specify address of proxy described below
    let player = rtsp.attach(document.getElementById('test_video'));

    ES6 Modules support is required. You can use webpack with babel loader to build this script:


    const PATHS = {
        src: {
            test: path.join(__dirname, 'test.js')
        dist: __dirname
    module.exports = {
        entry: PATHS.src,
        output: {
            path: PATHS.dist,
            filename: '[name].bundle.js'
        module: {
            loaders: [
                    test: /\.js$/,
                    loader: 'babel',
                    query: {
                        presets: ['es2015', 'stage-3', 'stage-2', 'stage-1', 'stage-0']
        resolve: {
            alias: {
                rtsp: path.join(__dirname,'node_modules/html5_rtsp/src')
    > npm install bp_event bp_log bp_statemachine
    > webpack --config webpack.config.js

    Include compiled script into your HTML:

    <script src="test.bundle.js"></script>

    Server side

    1. Install websocket proxy

      For Debian-based systems:

      dpkg -i ./ws-rtsp-repo-1.2.deb 
      apt update
      apt install ws-rtsp-proxy # Debian-based systems

      or Fedora:

      dnf install
      dnf install websock_rtsp_proxy
    2. Configure port in /etc/ws_rtsp.ini

      This port should be open in your firewall. Also you can pass request to this port from your proxy. (for example:

    3. Run it

    > service ws_rtsp start

    How RTSP proxy works?

    RTSP player establish connection with proxy with following protocol:

    1. Connect to RTSP channel by connecting websocket with "rtsp" protocol specified and get connection id

      WSP 1.0 INIT\r\n
      host <RTSP stream host>\r\n
      port <RTSP stream port>\r\n\r\n
      INIT <connection_id>\r\n\r\n
      conection_id = -1 means error
    2. Connect to RTP channel by connecting websocket with "rtp" protocol

      WSP 1.0 INIT\r\n
      RTSP <connection_id achieved from RTSP socket initialization>\r\n\r\n
      INIT <connection_id>\r\n\r\n
      conection_id = -1 means error
    3. RTP channel should send interleaved data with 4 byte header ($<channel><size>). Separate RTP is not supported at this moment

    Have any suggestions for improving work of our player? Feel free to leave comments or ideas


    npm i html5_rtsp_player

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    • kreopt