Web/API/MediaDevices

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.height.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 StreamsThe definition of 'MediaDevices' in that specification.	Candidate Recommendation	Initial definition

Browser compatibility

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`MediaDevices`	Chrome Full support 47	Edge Full support 12	Firefox Full support 33	IE No support No	Opera Full support 30	Safari Full support 11	WebView Android Full support 47	Chrome Android Full support 47	Firefox Android Full support 36	Opera Android Full support 30	Safari iOS Full support 11	Samsung Internet Android Full support 5.0
`devicechange` event	Chrome Full support 57	Edge Full support 12	Firefox Full support 52	IE No support No	Opera Full support 34	Safari No support No	WebView Android No support No	Chrome Android No support No	Firefox Android ?	Opera Android Full support 43	Safari iOS No support No	Samsung Internet Android No support No
`enumerateDevices`	Chrome Full support 47	Edge Full support 12	Firefox Full support 63 Notes' Disabled' Full support 63 Notes' Disabled' Notes' Prior to Firefox 63, `enumerateDevices()` only returned input devices. Starting with Firefox 63, output devices are also included if the `media.setsinkid.enabled` preference is enabled. Disabled' From version 63: this feature is behind the `media.setsinkid.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config. Full support 39	IE No support No	Opera Full support 34	Safari Full support 11	WebView Android Full support 47	Chrome Android Full support 47	Firefox Android Full support 63 Notes' Disabled' Full support 63 Notes' Disabled' Notes' Prior to Firefox 63, `enumerateDevices()` only returned input devices. Starting with Firefox 63, output devices are also included if the `media.setsinkid.enabled` preference is enabled. Disabled' From version 63: this feature is behind the `media.setsinkid.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config. Full support 39	Opera Android Full support 34	Safari iOS Full support 11	Samsung Internet Android Full support 5.0
`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 79 Full support 79 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 list of allowed sites.	IE No support No	Opera Full support 60 Full support 60 No support 57 — 60 Notes' Disabled' Notes' Available as a member of `Navigator` instead of `MediaDevices` in Opera 57 and 58. Disabled' From version 57 until version 60 (exclusive): this feature is behind the `Experimental Web Platform features` preference (needs to be set to `Enabled`).	Safari Full support 13	WebView Android No support No Notes' No support No Notes' Notes' API is available, but will always fail with `NotAllowedError`.	Chrome Android No support No	Firefox Android No support No Notes' No support No Notes' Notes' API is available, but will always fail with `NotAllowedError`.	Opera Android No support No	Safari iOS No support No	Samsung Internet Android No support No
`getSupportedConstraints`	Chrome Full support 53	Edge Full support 12	Firefox Full support 44	IE No support No	Opera Full support 40	Safari Full support 11	WebView Android Full support 53	Chrome Android Full support 52	Firefox Android Full support 50	Opera Android Full support 41	Safari iOS Full support 11	Samsung Internet Android Full support 6.0
`getUserMedia`	Chrome Full support 53 Notes' Full support 53 Notes' Notes' If you need this capability before version 53, refer to `navigator.webkitGetUserMedia`, a prefixed form of the deprecated `navigator.getUserMedia` API.	Edge Full support 12	Firefox Full support 36 Notes' Full support 36 Notes' Notes' If you need this capability before version 36, refer to `navigator.mozGetUserMedia`, a prefixed form of the deprecated `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 No	Opera Full support 40 Notes' Full support 40 Notes' Notes' If you need this capability before version 40, refer to `navigator.webkitGetUserMedia`, a prefixed form of the deprecated `navigator.getUserMedia` API.	Safari Full support 11	WebView Android Full support 53	Chrome Android Full support 53 Notes' Full support 53 Notes' Notes' If you need this capability before version 53, refer to `navigator.webkitGetUserMedia`, a prefixed form of the deprecated `navigator.getUserMedia` API.	Firefox Android Full support 36 Notes' Full support 36 Notes' Notes' If you need this capability before version 36, refer to `navigator.mozGetUserMedia`, a prefixed form of the deprecated `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 Notes' Full support 41 Notes' Notes' If you need this capability before version 41, refer to `navigator.webkitGetUserMedia`, a prefixed form of the deprecated `navigator.getUserMedia` API.	Safari iOS Full support 11	Samsung Internet Android Full support 6.0
`ondevicechange`	Chrome Full support 57	Edge Full support 12	Firefox 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 No	Opera Full support 34	Safari Full support 11	WebView Android No support No	Chrome Android No support No	Firefox Android Full support Yes	Opera Android Full support 34	Safari iOS Full support 11	Samsung Internet Android No support No
Stereo audio capture	Chrome ?	Edge ?	Firefox Full support 55	IE No support No	Opera ?	Safari No support No	WebView Android ?	Chrome Android ?	Firefox Android No support No	Opera Android ?	Safari iOS No support No	Samsung 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.