| .. |  | 
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| MediaEncryptedEvent |  | 
| MediaKeyError |  | 
| MediaKeyMessageEvent | The MediaKeyMessageEvent interface of the EncryptedMediaExtensions API contains the content and related data when the content decryption module generates a message for the session.  | 
| MediaKeyMessageEventInit |  | 
| MediaKeyMessageType |  | 
| MediaKeyNeededEventInit |  | 
| MediaKeySession | The MediaKeySession interface of the EncryptedMediaExtensions API represents a context for message exchange with a content decryption module (CDM).  | 
| MediaKeySessionType |  | 
| MediaKeyStatusMap | The MediaKeyStatusMap interface of the EncryptedMediaExtensions API is a read-only map of media key statuses by key IDs.  | 
| MediaKeySystemAccess | The MediaKeySystemAccess interface of the EncryptedMediaExtensions API provides access to a Key System for decryption and/or a content protection provider. You can request an instance of this object using the Navigator.requestMediaKeySystemAccess method.  | 
| MediaKeySystemConfiguration | The MediaKeySystemConfiguration interface Encrypted Media Extensions API provides configuration information about the media key system.  | 
| MediaKeySystemMediaCapability |  | 
| MediaKeys | The MediaKeys interface of EncryptedMediaExtensions API the represents a set of keys that an associated HTMLMediaElement can use for decryption of media data during playback.  | 
| MediaKeysRequirement |  |