HTMLMediaElement: waitingforkey event

The waitingforkey event is fired at a media element when it is first unable to play because it needs a key to decode the following data, and playback is stopped.

If the video frame and/or audio data for the current playback position have been decoded, readyState is set to HAVE_CURRENT_DATA. Otherwise, including if the data was previously available but isn't anymore, the readyState is set to HAVE_METADATA.

Syntax

Use the event name in methods like addEventListener(), or set an event handler property.

js
addEventListener("waitingforkey", (event) => {});

onwaitingforkey = (event) => {};

Event type

An Event.

Specifications

Specification
Encrypted Media Extensions
# dom-htmlmediaelement-onwaitingforkey

Browser compatibility

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desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
waitingforkey event

Legend

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Full support
Full support
Partial support
Partial support
Has more compatibility info.

See also