The HTMLMediaElement.defaultMuted property reflects the muted HTML attribute, which indicates whether the media element's audio output should be muted by default. This property has no dynamic effect. To mute and unmute the audio output, use the muted property.


var dMuted = video.defaultMuted;
audio.defaultMuted = true;


A Boolean. A value of true means that the audio output will be muted by default.


var videoEle = document.createElement('video');
videoEle.defaultMuted = true;
console.log(videoEle.outerHTML); // <video muted=""></video>


Specification Status Comment
HTML Living Standard
The definition of 'HTMLMediaElement.defaultMuted' in that specification.
Living Standard No change from HTML5
The definition of 'HTMLMediaElement.defaultMuted' in that specification.
Recommendation Initial definition.

Browser compatibility

Update compatibility data on GitHub
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
defaultMutedChrome Full support 43Edge Full support 12Firefox Full support 11IE No support NoOpera Full support YesSafari Full support 6WebView Android Full support 43Chrome Android Full support 43Firefox Android Full support 14Opera Android Full support YesSafari iOS Full support YesSamsung Internet Android Full support 4.0


Full support  
Full support
No support  
No support

See also