This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for the proper prefixes to use in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the spec changes.

The MediaKeyMessageEvent interface of the EncryptedMediaExtensions API contains the content and related data when the content decryption module generates a message for the session.


Inherits properties from its parent, Event.

MediaKeyMessageEvent.message Read only
Returns an ArrayBuffer with a message from the content decryption module. Messages vary by key system.
MediaKeyMessageEvent.messageType Read only
Indicates the type of message. May be one of license-requestlicense-renewallicense-renewal, or individualization-request.


Inherits methods from its parent, Event.


// TBD


Specification Status Comment
Encrypted Media Extensions
The definition of 'MediaKeyMessageEvent' in that specification.
Working Draft Initial definition.

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 42.0 ? ? ? ?
Feature Android Android Webview Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile Chrome for Android
Basic support Not supported 43.0 ? ? ? ? ? 42.0


© 2016 Mozilla Contributors
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.

API EncryptedMediaExtensions MediaKeyMessageEvent NeedsContent NeedsExample Reference Référence