Encrypted Media Extensions API

{{DefaultAPISidebar("Encrypted Media Extensions")}}  {{securecontext_header}} 

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

Access to this API is provided through {{domxref("Navigator.requestMediaKeySystemAccess()")}} .

Interfaces

• {{domxref("MediaEncryptedEvent")}} 
  • : Represents a specific {{domxref("HTMLMediaElement/encrypted_event", "encrypted")}}  event thrown when a {{domxref('HTMLMediaElement')}}  encounters some initialization data.
• {{domxref("MediaKeyMessageEvent")}} 
  • : Contains the content and related data when the content decryption module (CDM) generates a message for the session.
• {{domxref("MediaKeys")}} 
  • : Represents a set of keys that an associated {{domxref('HTMLMediaElement')}}  can use for decryption of media data during playback.
• {{domxref("MediaKeySession")}} 
  • : Represents a context for message exchange with a content decryption module (CDM).
• {{domxref("MediaKeyStatusMap")}} 
  • : A read-only map of media key statuses by key IDs.
• {{domxref("MediaKeySystemAccess")}} 
  • : Provides access to a key system for decryption and/or a content protection provider.

Extensions to other interfaces

The Encrypted Media Extensions API extends the following APIs, adding the listed features.

HTMLMediaElement

• {{domxref("HTMLMediaElement.mediaKeys")}}  {{readonlyinline}} 
  • : Provides a {{domxref("MediaKeys")}}  object that represents the set of keys that the element can use for decryption of media data during playback.
• {{domxref("HTMLMediaElement.setMediaKeys()")}} 
  • : Sets the {{domxref("MediaKeys")}}  that will be used to decrypt media during playback.
• encrypted event
  • : Event that is fired on a {{domxref("HTMLMediaElement")}}  when initialization data is encountered in the media, indicating that it is encrypted.

Navigator

• {{domxref("Navigator.requestMediaKeySystemAccess()")}} 
  • : Returns a {{jsxref('Promise')}}  that fulfils to a {{domxref('MediaKeySystemAccess')}}  object that can be used to access a particular media key system, which can in turn be used to create keys for decrypting a media stream.

Specifications

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Browser compatibility

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