Encrypted Media Extensions API

This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The Encrypted Media Extensions 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	Recommendation	Initial definition

Browser compatibility

Navigator.requestMediaKeySystemAccess()

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`requestMediaKeySystemAccess`	Chrome Full support 42 Notes Full support 42 Notes Notes The spec requires that the passed `supportedConfigurations` option contain at least one of `audioCapabilities` or `videoCapabilities`, and that said parameters include a codec string. Notes The function does not exist in insecure contexts. This was not enforced until Chrome 58.	Edge Full support 13	Firefox Full support Yes Notes Full support Yes Notes Notes Starting in Firefox 55, if neither `audioCapabilities` nor `videoCapabilities` is specified in `supportedConfigurations`, a warning is output to the web console. Notes In addition, starting in Firefox 55, if in `supportedConfigurations`, either `audioCapabilities`'s or `videoCapabilities`'s `contentType` value doesn't specify a "codecs" substring to define allowed codecs within the media wrapper, a warning is output to the web console. See note below table for example and correction. Notes In the future, if neither `audioCapabilities` nor `videoCapabilities` is specified in the `supportedConfigurations`, a `NotSupported` exception will be thrown.	IE ?	Opera Full support 29 Notes Full support 29 Notes Notes The spec requires that the passed `supportedConfigurations` option contain at least one of `audioCapabilities` or `videoCapabilities`, and that said parameters include a codec string. Notes The function does not exist in insecure contexts. This was not enforced until Opera 45.	Safari ?	WebView Android Full support 43 Notes Full support 43 Notes Notes The spec requires that the passed `supportedConfigurations` option contain at least one of `audioCapabilities` or `videoCapabilities`, and that said parameters include a codec string. Notes The function does not exist in insecure contexts. This was not enforced until version 58.	Chrome Android Full support 42 Notes Full support 42 Notes Notes The spec requires that the passed `supportedConfigurations` option contain at least one of `audioCapabilities` or `videoCapabilities`, and that said parameters include a codec string. Notes The function does not exist in insecure contexts. This was not enforced until Chrome 58.	Firefox Android Full support Yes Notes Full support Yes Notes Notes Starting in Firefox 55, if neither `audioCapabilities` nor `videoCapabilities` is specified in `supportedConfigurations`, a warning is output to the web console. Notes In addition, starting in Firefox 55, if in `supportedConfigurations`, either `audioCapabilities`'s or `videoCapabilities`'s `contentType` value doesn't specify a "codecs" substring to define allowed codecs within the media wrapper, a warning is output to the web console. See note below table for example and correction. Notes In the future, if neither `audioCapabilities` nor `videoCapabilities` is specified in the `supportedConfigurations`, a `NotSupported` exception will be thrown.	Opera Android Full support 29 Notes Full support 29 Notes Notes The spec requires that the passed `supportedConfigurations` option contain at least one of `audioCapabilities` or `videoCapabilities`, and that said parameters include a codec string. Notes The function does not exist in insecure contexts. This was not enforced until Opera 45.	Safari iOS ?	Samsung Internet Android Full support 4.0 Notes Full support 4.0 Notes Notes The spec requires that the passed `supportedConfigurations` option contain at least one of `audioCapabilities` or `videoCapabilities`, and that said parameters include a codec string. Notes The function does not exist in insecure contexts. This was not enforced until Samsung Internet 7.0.

Legend

Full support: Full support
Compatibility unknown: Compatibility unknown
See implementation notes.: See implementation notes.