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

The MediaKeySession.sessionId read-only property contains a unique string generated by the CDM for the current media object and its associated keys or licenses.


​var sessionId = mediaKeySessionObj.sessionId;


Specification Status Comment
Encrypted Media Extensions
The definition of 'sessionId' in that specification.
Recommendation Initial definition

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support4213 ? ? Yes ?
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support4342 Yes ? Yes ?4.0

Document Tags and Contributors

Contributors to this page: fscholz, libbymc, rolfedh, Sebastianz, jpmedley
Last updated by: fscholz,