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Notice: The WebPlatform project, supported by various stewards between 2012 and 2015, has been discontinued. This site is now available on github.

Media Source Extensions


Provides a buffer based source for HTML5 Video elements to enable media streams for playback, for features like adaptive streaming and shifting live streams.


TODO: Remove these notes and add content.

General compatibility notes -

  • Internet Explorer 11 (on Windows 8.1 and later).
  • (Prefixed) Chrome 17 - 20 implements an older version, Chrome 21 - 30 implements a previous version.
  • Chrome 31.
  • (Prefixed) Chrome for Android 30 (on Android 4.1 and later) implements a previous version.
  • Chrome for Android 31 (on Android 4.1 and later).

See also

External resources