The MediaDevices interface provides access to connected media input devices like cameras and microphones, as well as screen sharing. In essence, it lets you obtain access to any hardware source of media data.

Properties

Inherits properties from its parent interface, EventTarget.

Events

devicechange
Fired when a media input or output device is attached to or removed from the user's computer.
Also available via the ondevicechange property.

Methods

Inherits methods from its parent interface, EventTarget.

enumerateDevices()
Obtains an array of information about the media input and output devices available on the system.
getSupportedConstraints()
Returns an object conforming to MediaTrackSupportedConstraints indicating which constrainable properties are supported on the MediaStreamTrack interface. See Capabilities and constraints in Media Capture and Streams API (Media Stream) to learn more about constraints and how to use them.
getDisplayMedia()
Prompts the user to select a display or portion of a display (such as a window) to capture as a MediaStream for sharing or recording purposes.  Returns a promise that resolves to a MediaStream.
getUserMedia()
With the user's permission through a prompt, turns on a camera and/or a microphone on the system and provides a MediaStream containing a video track and/or an audio track with the input.

Example

'use strict';

// Put variables in global scope to make them available to the browser console.
var video = document.querySelector('video');
var constraints = window.constraints = {
  audio: false,
  video: true
};
var errorElement = document.querySelector('#errorMsg');

navigator.mediaDevices.getUserMedia(constraints)
.then(function(stream) {
  var videoTracks = stream.getVideoTracks();
  console.log('Got stream with constraints:', constraints);
  console.log('Using video device: ' + videoTracks[0].label);
  stream.onremovetrack = function() {
    console.log('Stream ended');
  };
  window.stream = stream; // make variable available to browser console
  video.srcObject = stream;
})
.catch(function(error) {
  if (error.name === 'ConstraintNotSatisfiedError') {
    errorMsg('The resolution ' + constraints.video.width.exact + 'x' +
        constraints.video.width.exact + ' px is not supported by your device.');
  } else if (error.name === 'PermissionDeniedError') {
    errorMsg('Permissions have not been granted to use your camera and ' +
      'microphone, you need to allow the page access to your devices in ' +
      'order for the demo to work.');
  }
  errorMsg('getUserMedia error: ' + error.name, error);
});

function errorMsg(msg, error) {
  errorElement.innerHTML += '<p>' + msg + '</p>';
  if (typeof error !== 'undefined') {
    console.error(error);
  }
}

Specifications

Specification Status Comment
Media Capture and Streams
The definition of 'MediaDevices' 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
MediaDevicesChrome Full support 47Edge Full support YesFirefox Full support 33IE No support NoOpera Full support 30Safari Full support 11WebView Android Full support 47Chrome Android Full support 47Edge Mobile Full support YesFirefox Android Full support 36Opera Android Full support 30Safari iOS Full support 11Samsung Internet Android Full support Yes
ondevicechangeChrome Full support 57Edge Full support 12Firefox Full support 52
Full support 52
No support 51 — 52
Notes Disabled
Notes MediaDevices.ondevicechange is supported only on macOS.
Disabled From version 51 until version 52 (exclusive): this feature is behind the media.ondevicechange.enabled preference (needs to be set to true). To change preferences in Firefox, visit about:config.
IE No support NoOpera Full support 34Safari No support NoWebView Android No support NoChrome Android No support NoEdge Mobile ? Firefox Android Full support YesOpera Android Full support 34Safari iOS No support NoSamsung Internet Android ?
devicechange eventChrome Full support 57Edge Full support 12Firefox Full support 52IE No support NoOpera Full support 34Safari No support NoWebView Android No support NoChrome Android No support NoEdge Mobile ? Firefox Android ? Opera Android Full support 43Safari iOS No support NoSamsung Internet Android ?
enumerateDevicesChrome Full support 47Edge Full support 12Firefox Full support 63
Notes
Full support 63
Notes
Notes Prior to Firefox 63, enumerateDevices() only returned input devices. Starting with Firefox 63, output devices are also included.
Full support 39
IE No support NoOpera Full support 34Safari Full support 11WebView Android Full support 47Chrome Android Full support 47Edge Mobile Full support YesFirefox Android Full support 39Opera Android Full support 34Safari iOS Full support 11Samsung Internet Android Full support Yes
getSupportedConstraintsChrome Full support 53Edge Full support 12Firefox Full support 44IE No support NoOpera Full support 40Safari Full support 11WebView Android Full support 53Chrome Android Full support 52Edge Mobile ? Firefox Android Full support 50Opera Android Full support 41Safari iOS Full support 11Samsung Internet Android Full support Yes
getDisplayMedia()Chrome Full support 72
Full support 72
No support 70 — 72
Notes Disabled
Notes Available as a member of Navigator instead of MediaDevices in Chrome 70 and 71.
Disabled From version 70 until version 72 (exclusive): this feature is behind the Experimental Web Platform features preference (needs to be set to Enabled). To change preferences in Chrome, visit chrome://flags.
Edge Full support 17
Notes
Full support 17
Notes
Notes Available as a member of Navigator instead of MediaDevices.
Firefox Full support 66
Full support 66
No support 33 — 66
Notes
Notes Since Firefox 33 you can capture screen data using getUserMedia(), with a video constraint called mediaSource. Prior to 52 it relied on a client-configurable whitelist.
IE No support NoOpera ? Safari No support NoWebView Android No support No
Notes
No support No
Notes
Notes API is available, but will always fail with NotAllowedError.
Chrome Android No support NoEdge Mobile Full support YesFirefox Android No support No
Notes
No support No
Notes
Notes API is available, but will always fail with NotAllowedError.
Opera Android Full support YesSafari iOS No support NoSamsung Internet Android ?
getUserMediaChrome Full support 52
Full support 52
No support 47 — 52
Notes Disabled
Notes Older versions of Chrome implement navigator.webkitGetUserMedia, a prefixed form of the legacy navigator.getUserMedia API.
Disabled From version 47 until version 52 (exclusive): this feature is behind the Experimental Web Platform features preference (needs to be set to Enabled). To change preferences in Chrome, visit chrome://flags.
Edge Full support 12Firefox Full support 36
Notes
Full support 36
Notes
Notes Older versions of Firefox implement navigator.mozGetUserMedia, a prefixed form of the legacy navigator.getUserMedia API.
Notes Before Firefox 55, getUserMedia() incorrectly returns NotSupportedError when the list of constraints specified is empty, or has all constraints set to false. Starting in Firefox 55, this situation now correctly calls the failure handler with a TypeError.
Notes When using the Firefox-specific video constraint called mediaSource to request display capture, Firefox 66 and later consider values of screen and window to both cause a list of screens and windows to be shown.
Notes Starting in Firefox 66, getUserMedia() can no longer be used in sandboxed <iframe>s or data URLs entered in the address bar by the user.
IE No support NoOpera Full support 40
Full support 40
No support 34 — 40
Notes Disabled
Notes Older versions of Opera implement navigator.webkitGetUserMedia, a prefixed form of the legacy navigator.getUserMedia API.
Disabled From version 34 until version 40 (exclusive): this feature is behind the Experimental Web Platform features preference (needs to be set to Enabled).
Safari Full support 11WebView Android Full support 53Chrome Android Full support 52
Full support 52
No support 47 — 52
Notes Disabled
Notes Older versions of Chrome implement navigator.webkitGetUserMedia, a prefixed form of the legacy navigator.getUserMedia API.
Disabled From version 47 until version 52 (exclusive): this feature is behind the Experimental Web Platform features preference (needs to be set to Enabled). To change preferences in Chrome, visit chrome://flags.
Edge Mobile Full support YesFirefox Android Full support 36
Notes
Full support 36
Notes
Notes Older versions of Firefox implement navigator.mozGetUserMedia, a prefixed form of the legacy navigator.getUserMedia API.
Notes Before Firefox 55, getUserMedia() incorrectly returns NotSupportedError when the list of constraints specified is empty, or has all constraints set to false. Starting in Firefox 55, this situation now correctly calls the failure handler with a TypeError.
Notes When using the Firefox-specific video constraint called mediaSource to request display capture, Firefox 66 and later consider values of screen and window to both cause a list of screens and windows to be shown.
Notes Starting in Firefox 66, getUserMedia() can no longer be used in sandboxed <iframe>s or data URLs entered in the address bar by the user.
Opera Android Full support 41
Full support 41
No support 34 — 41
Notes Disabled
Notes Older versions of Opera implement navigator.webkitGetUserMedia, a prefixed form of the legacy navigator.getUserMedia API.
Disabled From version 34 until version 41 (exclusive): this feature is behind the Experimental Web Platform features preference (needs to be set to Enabled).
Safari iOS Full support 11Samsung Internet Android Full support Yes
Stereo audio captureChrome ? Edge ? Firefox Full support 55IE No support NoOpera ? Safari No support NoWebView Android ? Chrome Android ? Edge Mobile ? Firefox Android No support NoOpera Android ? Safari iOS No support NoSamsung Internet Android ?

Legend

Full support  
Full support
No support  
No support
Compatibility unknown  
Compatibility unknown
See implementation notes.
See implementation notes.
User must explicitly enable this feature.
User must explicitly enable this feature.

See also