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Encrypted Media Extensions API

This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage 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 specification changes.

The EncryptedMediaExtenstions API provides interfaces for controlling the playback of content which is subject to a digital restrictions management scheme.

Interfaces

MediaKeyMessageEvent: Contains the content and related data when the content decryption module (CDM) generates a message for the session.
MediaKeys: Represents a set of keys that an associated HTMLMediaElement can use for decryption of media data during playback.
MediaKeySession: Represents a context for message exchange with a content decryption module (CDM).
MediaKeyStatusMap: Is a read-only map of media key statuses by key IDs.
MediaKeySystemAccess: Provides access to a Key System for decryption and/or a content protection provider.
MediaKeySystemConfiguration: Provides configuration information about the media key system.

Specifications

Specification	Status	Comment
Encrypted Media Extensions	Working Draft	Initial definition

Browser compatibility

Feature	Chrome	Firefox (Gecko)	Internet Explorer	Opera	Safari (WebKit)
Basic support	35.0 (prefixed old version; Clear Key and Widevine) 42.0	38.0 (38.0) (Primetime (Windows-only) and Clear Key; MP4 only) 47.0 (47.0) (Widevine (Windows and Mac); MP4 only)	11 (Windows 8.1+ only; prefixed old version; PlayReady)	31 (Clear Key and Widevine)	7.0 (prefixed old version of API without matching MSE support; FairPlay Streaming) 8.0 (prefixed and usable with MSE)

Feature

Chrome

Firefox (Gecko)

Internet Explorer

Opera

Safari (WebKit)

Basic support

35.0 (prefixed old version; Clear Key and Widevine)

42.0

38.0 (38.0) (Primetime (Windows-only) and Clear Key; MP4 only)

47.0 (47.0) (Widevine (Windows and Mac); MP4 only)

11 (Windows 8.1+ only; prefixed old version; PlayReady)

31 (Clear Key and Widevine)

7.0 (prefixed old version of API without matching MSE support; FairPlay Streaming)

8.0 (prefixed and usable with MSE)

Feature	Android	Android Webview	Firefox Mobile (Gecko)	Firefox OS	IE Mobile	Opera Mobile	Safari Mobile	Chrome for Android
Basic support	No support	43.0	?	?	?	?	?	42.0

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https://developer.mozilla.org/en-US/docs/Web/API/Encrypted_Media_Extensions_API