在此页

• 接口
• 规范
• 浏览器兼容性
• 相关话题

这是 实验性技术
检查 浏览器兼容性表格 要小心谨慎在生产中使用这之前。

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

接口

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.

规范

规范	状态	注释
加密媒体扩展	推荐	初始定义

浏览器兼容性

Navigator.requestMediaKeySystemAccess()

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	桌面						移动
	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 42 42 注意事项 注意事项 The spec requires that the passed supportedConfigurations option contain at least one of audioCapabilities or videoCapabilities , and that said parameters include a codec string. 注意事项 The function does not exist in insecure contexts. This was not enforced until Chrome 58.	Edge 13	Firefox Yes Yes 注意事项 注意事项 Starting in Firefox 55, if neither audioCapabilities nor videoCapabilities 指定在 supportedConfigurations , a warning is output to the web console. 注意事项 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. 注意事项 In the future, if neither audioCapabilities nor videoCapabilities is specified in the supportedConfigurations ， NotSupported exception will be thrown.	IE ?	Opera 29 29 注意事项 注意事项 The spec requires that the passed supportedConfigurations option contain at least one of audioCapabilities or videoCapabilities , and that said parameters include a codec string. 注意事项 The function does not exist in insecure contexts. This was not enforced until Opera 45.	Safari ?	WebView Android 43 43 注意事项 注意事项 The spec requires that the passed supportedConfigurations option contain at least one of audioCapabilities or videoCapabilities , and that said parameters include a codec string. 注意事项 The function does not exist in insecure contexts. This was not enforced until version 58.	Chrome Android 42 42 注意事项 注意事项 The spec requires that the passed supportedConfigurations option contain at least one of audioCapabilities or videoCapabilities , and that said parameters include a codec string. 注意事项 The function does not exist in insecure contexts. This was not enforced until Chrome 58.	Firefox Android Yes Yes 注意事项 注意事项 Starting in Firefox 55, if neither audioCapabilities nor videoCapabilities 指定在 supportedConfigurations , a warning is output to the web console. 注意事项 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. 注意事项 In the future, if neither audioCapabilities nor videoCapabilities is specified in the supportedConfigurations ， NotSupported exception will be thrown.	Opera Android 29 29 注意事项 注意事项 The spec requires that the passed supportedConfigurations option contain at least one of audioCapabilities or videoCapabilities , and that said parameters include a codec string. 注意事项 The function does not exist in insecure contexts. This was not enforced until Opera 45.	Safari iOS ?	Samsung Internet Android 4.0 4.0 注意事项 注意事项 The spec requires that the passed supportedConfigurations option contain at least one of audioCapabilities or videoCapabilities , and that said parameters include a codec string. 注意事项 The function does not exist in insecure contexts. This was not enforced until Samsung Internet 7.0.

图例

完整支持

完整支持

兼容性未知 ?

兼容性未知

见实现注意事项。

见实现注意事项。

元数据

• 最后修改： 2019 年 3 月 23 日

相关话题

1. Encrypted Media Extensions API
2. 接口

   1. MediaKeySessionEvent
   2. MediaKeys
   3. MediaKeySession
   4. MediaKeyStatusMap
   5. MediaKeySystemAccess
   6. MediaKeySystemConfiguration
3. 特性

   1. HTMLMediaElement.mediaKeys
   2. HMTLMediaElement.onencrypted
4. 方法

   1. Navigator.requestMediaKeySystemAccess()
   2. HTMLMediaElement.setMediaKeys()