MediaKeySession: expiration property

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since March 2019.

Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.

The expiration read-only property of the MediaKeySession interface returns the time after which the keys in the current session can no longer be used to decrypt media data, or NaN if no such time exists.

This value is determined by the CDM and measured in milliseconds since January 1, 1970, UTC. This value may change during a session lifetime, such as when an action triggers the start of a window.

Value

A number or NaN.

Specifications

Specification
Encrypted Media Extensions
# dom-mediakeysession-expiration

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
expiration

Legend

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Full support
Full support