This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The MediaSource() constructor of the MediaSource interface constructs and returns a new MediaSource object with no associated source buffers.
Syntax
var mediaSource = new MediaSource();
Parameters
None.
Example
The following snippet is taken from a simple example written by Nick Desaulniers (view the full demo live, or download the source for further investigation.)
var video = document.querySelector('video');
var assetURL = 'frag_bunny.mp4';
// Need to be specific for Blink regarding codecs
// ./mp4info frag_bunny.mp4 | grep Codec
var mimeCodec = 'video/mp4; codecs="avc1.42E01E, mp4a.40.2"';
if ('MediaSource' in window && MediaSource.isTypeSupported(mimeCodec)) {
var mediaSource = new MediaSource;
//console.log(mediaSource.readyState); // closed
video.src = URL.createObjectURL(mediaSource);
mediaSource.addEventListener('sourceopen', sourceOpen);
} else {
console.error('Unsupported MIME type or codec: ', mimeCodec);
}
...
Specifications
| Specification | Status | Comment |
|---|---|---|
| Media Source Extensions The definition of 'MediaSource' in that specification. |
Recommendation | Initial definition. |
Browser compatibility
| Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|---|
| Basic support | 31 23 — 31 -webkit- | Yes | 42 | 113 | 15 | 8 |
| Feature | Android webview | Chrome for Android | Edge mobile | Firefox for Android | Opera Android | iOS Safari | Samsung Internet |
|---|---|---|---|---|---|---|---|
| Basic support | 33 | 33 | Yes | 41 | 30 | No | Yes |
1. Limited support to a whitelist of sites, for example YouTube, Netflix, and other popular streaming sites. The whitelist was removed when Media Source Extensions was enabled by default in Firefox 42.
2. From version 25 until version 42 (exclusive): this feature is behind the media.mediasource.enabled preference. To change preferences in Firefox, visit about:config.
3. Only works on Windows 8+.