Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
The load() method of the MediaKeySession interface returns a Promise that resolves to a boolean value after loading data for a specified session object.
load(sessionId)sessionIdA unique string generated by the content description module for the current media object and its associated keys or licenses.
A Promise that resolves to a boolean indicating whether the load succeeded or failed.