MediaSource.duration

The duration property of the MediaSource interface gets and sets the duration of the current media being presented.

Syntax

mediaSource.duration = 5.5; // 5.5 seconds

var myDuration = mediaSource.duration;

Value

A double. A value in seconds is expected.

Errors

The following errors may be thrown when setting a new value for this property.

Example

The following snippet is based on a simple example written by Nick Desaulniers (view the full demo live, or download the source for further investigation.)

function sourceOpen (_) {
  //console.log(this.readyState); // open
  var mediaSource = this;
  var sourceBuffer = mediaSource.addSourceBuffer(mimeCodec);
  fetchAB(assetURL, function (buf) {
    sourceBuffer.addEventListener('updateend', function (_) {
      mediaSource.endOfStream();
      mediaSource.duration = 120;
      video.play();
      //console.log(mediaSource.readyState); // ended
    });
    sourceBuffer.appendBuffer(buf);
  });
};

...

Specifications

Browser compatibilityUpdate compatibility data on GitHub

See also

• SourceBuffer
• SourceBufferList