DVR Streaming

DVR support in Radiant Media Player

DVR streaming offers the possibility to rewind into a live stream to watch recorded content. Radiant Media Player features a specific DVR UI, including intuitive in-stream navigation and jump-to-live functionalities. DVR streaming with Radiant Media Player is supported for the following streaming protocol:

• HLS
• MPEG-DASH

DVR for audio-only streaming is also supported.

Radiant Media Player sports a variety of optimisations for DVR streaming. DVR streams are automatically detected based on the dvrUIThreshold setting.

You may also insert video ads, use DRM or 360 video content and query our dedicated DVR API to fine tune your DVR player.

Player settings

dvrUIThreshold: Number

Minimum time in second for the DVR window for the DVR UI to be shown. Default: 300.

Player code example

HLS DVR

<!-- Include Radiant Media Player - here we use the optimised build for hls.js -->
<script src="https://cdn.radiantmediatechs.com/rmp/9.16.6/js/rmp-hlsjs.min.js"></script>
<!-- Player container element -->
<div id="rmp"></div>
<!-- Set up player configuration options -->
<script>
  // DVR HLS source
  const src = {
    hls: 'https://your-dvr-hls-url.m3u8'
  };
  // Your player settings
  const settings = {
    licenseKey: 'your-license-key',
    src: src,
    width: 640,
    height: 360,
    // To enable full DVR UI on Apple devices
    forceHlsJSOnAppleDevices: true,
    dvrUIThreshold: 300,
    contentMetadata: {
      poster: [
        'https://your-poster-url.jpg'
      ]
    }
  };
  const rmp = new RadiantMP('rmp');
  rmp.init(settings);
</script>

DASH DVR

<!-- Include Radiant Media Player - here we use the optimised build for Shaka player -->
<script src="https://cdn.radiantmediatechs.com/rmp/9.16.6/js/rmp-shaka.min.js"></script>
<!-- Player container element -->
<div id="rmp"></div>
<!-- Set up player configuration options -->
<script>
  // DVR MPEG-DASH source
  const src = {
    dash: 'https://your-dvr-dash-url.m3u8'
  };
  // Your player settings
  const settings = {
    licenseKey: 'your-license-key',
    src: src,
    width: 640,
    height: 360,
    // Here we tell the player to enable DVR UI and optimisations
    dvrUIThreshold: 300,
    contentMetadata: {
      poster: [
        'https://your-poster-url.jpg'
      ]
    }
  };
  const rmp = new RadiantMP('rmp');
  rmp.init(settings);
</script>

iOS, macOS, Google Cast considerations

On iOS where media source extensions are not available we rely on Apple QuickTime-based embedded player for providing DVR controls with HLS. DVR controls are only available in fullscreen mode on iOS 12+.

When casting a DVR stream through Google Cast, the player handles the DVR stream as a simple live stream. This is because DVR controls in our custom receiver application is currently unavailable.

DVR API

DVR API method

dvrSeekTo(ms)

rmp.dvrSeekTo(60000);

This method allows seeking into the recorded DVR sliding window. Input parameter ms is a Number expressed in milliseconds. If the input is greater than the sliding window duration then the player will jump to live. In order to avoid buffering issues seeking to value below 2 seconds will cause the player to seek to 10 seconds within the DVR sliding window.

syncToLiveEdge()

rmp.syncToLiveEdge();

This method will cause the player to exit the recorded DVR sliding window and to jump to live content.

getDuration()

rmp.getDuration();

This getter returns a Number expressed in milliseconds representing the duration of the DVR recorded sliding window. -1 is returned in case the value is not available.

getCurrentTime()

rmp.getCurrentTime();

This getter returns a Number expressed in milliseconds representing the relative time from the start of the DVR current window while the player is in DVR recorded mode. In DVR live mode or if this value is not available, -1 is returned.

getStreamMode()

rmp.getStreamMode();

This getter returns a String stating the current streaming mode. Possible values are: 'livedvr', 'voddvr', 'live', 'vod', 'unresolved'.

DVR API events

dvrislive

This event fires when the DVR stream becomes live due to a user interaction or a call to syncToLiveEdge API method

dvrisvod

This event fires when the DVR stream becomes VOD due to a user interaction or a call to dvrSeekTo API method