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The MediaDevicesInfo interface contains information that describes a single media input or output device. The list of devices obtained by calling navigator.mediaDevices.enumerateDevices() is an array of MediaDeviceInfo objects, one per media device.

Properties

MediaDeviceInfo.deviceIdRead only
Returns a DOMString that is an identifier for the represented device that is persisted across sessions. It is un-guessable by other applications and unique to the origin of the calling application. It is reset when the user clears cookies (for Private Browsing, a different identifier is used that is not persisted across sessions).
MediaDeviceInfo.groupIdRead only
Returns a DOMString that is a group identifier. Two devices have the same group identifier if they belong to the same physical device — for example a monitor with both a built-in camera and a microphone.
MediaDeviceInfo.kindRead only
Returns an enumerated value that is either "videoinput", "audioinput" or "audiooutput".
MediaDeviceInfo.labelRead only
Returns a DOMString that is a label describing this device (for example "External USB Webcam").

For security reasons, the label field is always blank unless an active media stream exists or the user has granted persistent permission for media device access. The set of device labels could otherwise be used as part of a fingerprinting mechanism to identify a user.

Methods

None.

Example

Here's an example that uses enumerateDevices() to get a list of devices.

if (!navigator.mediaDevices || !navigator.mediaDevices.enumerateDevices) {
  console.log("enumerateDevices() not supported.");
  return;
}

// List cameras and microphones.

navigator.mediaDevices.enumerateDevices()
.then(function(devices) {
  devices.forEach(function(device) {
    console.log(device.kind + ": " + device.label +
                " id = " + device.deviceId);
  });
})
.catch(function(err) {
  console.log(err.name + ": " + err.message);
});

This might produce:

videoinput: id = csO9c0YpAf274OuCPUA53CNE0YHlIr2yXCi+SqfBZZ8=
audioinput: id = RKxXByjnabbADGQNNZqLVLdmXlS0YkETYCIbg+XxnvM=
audioinput: id = r2/xw1xUPIyZunfV1lGrKOma5wTOvCkWfZ368XCndm0=

or if one or more media streams are active, or if persistent permissions have been granted:

videoinput: FaceTime HD Camera (Built-in) id=csO9c0YpAf274OuCPUA53CNE0YHlIr2yXCi+SqfBZZ8=
audioinput: default (Built-in Microphone) id=RKxXByjnabbADGQNNZqLVLdmXlS0YkETYCIbg+XxnvM=
audioinput: Built-in Microphone id=r2/xw1xUPIyZunfV1lGrKOma5wTOvCkWfZ368XCndm0=

Specifications

Specification Status Comment
Media Capture and Streams
The definition of 'MediaDevicesInfo' in that specification.
Candidate Recommendation Initial definition

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
MediaDeviceInfoChrome Full support 55
Notes
Full support 55
Notes
Notes For earlier versions, this interface is available through the adapter.js polyfill
Edge Full support YesFirefox Full support 39IE No support NoOpera Full support Yes
Notes
Full support Yes
Notes
Notes This interface is available in Opera through the adapter.js polyfill.
Safari No support NoWebView Android Full support 55
Notes
Full support 55
Notes
Notes For earlier versions, this interface is available through the adapter.js polyfill
Chrome Android Full support 55
Notes
Full support 55
Notes
Notes For earlier versions, this interface is available through the adapter.js polyfill
Edge Mobile Full support YesFirefox Android Full support 39Opera Android Full support Yes
Notes
Full support Yes
Notes
Notes This interface is available in Opera through the adapter.js polyfill.
Safari iOS No support NoSamsung Internet Android Full support 6.0
deviceIdChrome Full support 55
Notes
Full support 55
Notes
Notes For earlier versions, this interface is available through the adapter.js polyfill
Edge Full support 12Firefox Full support 39IE No support NoOpera Full support Yes
Notes
Full support Yes
Notes
Notes This interface is available in Opera through the adapter.js polyfill.
Safari No support NoWebView Android Full support 55
Notes
Full support 55
Notes
Notes For earlier versions, this interface is available through the adapter.js polyfill
Chrome Android Full support 55
Notes
Full support 55
Notes
Notes For earlier versions, this interface is available through the adapter.js polyfill
Edge Mobile Full support YesFirefox Android Full support 39Opera Android Full support Yes
Notes
Full support Yes
Notes
Notes This interface is available in Opera through the adapter.js polyfill.
Safari iOS No support NoSamsung Internet Android Full support 6.0
groupIdChrome Full support 55
Notes
Full support 55
Notes
Notes For earlier versions, this interface is available through the adapter.js polyfill
Edge Full support 12Firefox Full support 39IE No support NoOpera Full support Yes
Notes
Full support Yes
Notes
Notes This interface is available in Opera through the adapter.js polyfill.
Safari No support NoWebView Android Full support 55
Notes
Full support 55
Notes
Notes For earlier versions, this interface is available through the adapter.js polyfill
Chrome Android Full support 55
Notes
Full support 55
Notes
Notes For earlier versions, this interface is available through the adapter.js polyfill
Edge Mobile Full support YesFirefox Android Full support 39Opera Android Full support Yes
Notes
Full support Yes
Notes
Notes This interface is available in Opera through the adapter.js polyfill.
Safari iOS No support NoSamsung Internet Android Full support 6.0
kindChrome Full support 55
Notes
Full support 55
Notes
Notes For earlier versions, this interface is available through the adapter.js polyfill
Edge Full support 12Firefox Full support 39IE No support NoOpera Full support Yes
Notes
Full support Yes
Notes
Notes This interface is available in Opera through the adapter.js polyfill.
Safari No support NoWebView Android Full support 55
Notes
Full support 55
Notes
Notes For earlier versions, this interface is available through the adapter.js polyfill
Chrome Android Full support 55
Notes
Full support 55
Notes
Notes For earlier versions, this interface is available through the adapter.js polyfill
Edge Mobile Full support YesFirefox Android Full support 39Opera Android Full support Yes
Notes
Full support Yes
Notes
Notes This interface is available in Opera through the adapter.js polyfill.
Safari iOS No support NoSamsung Internet Android Full support 6.0
labelChrome Full support 55
Notes
Full support 55
Notes
Notes For earlier versions, this interface is available through the adapter.js polyfill
Edge Full support 12Firefox Full support 39IE No support NoOpera Full support Yes
Notes
Full support Yes
Notes
Notes This interface is available in Opera through the adapter.js polyfill.
Safari No support NoWebView Android Full support 55
Notes
Full support 55
Notes
Notes For earlier versions, this interface is available through the adapter.js polyfill
Chrome Android Full support 55
Notes
Full support 55
Notes
Notes For earlier versions, this interface is available through the adapter.js polyfill
Edge Mobile Full support YesFirefox Android Full support 39Opera Android Full support Yes
Notes
Full support Yes
Notes
Notes This interface is available in Opera through the adapter.js polyfill.
Safari iOS No support NoSamsung Internet Android Full support 6.0
toJSONChrome Full support YesEdge Full support 18Firefox Full support YesIE No support NoOpera Full support YesSafari No support NoWebView Android Full support YesChrome Android Full support YesEdge Mobile ? Firefox Android Full support YesOpera Android Full support YesSafari iOS No support NoSamsung Internet Android Full support Yes

Legend

Full support  
Full support
No support  
No support
Compatibility unknown  
Compatibility unknown
See implementation notes.
See implementation notes.

See also

Etiquetas y colaboradores del documento

Última actualización por: aivarask,