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---
title: MediaDevices
slug: Web/API/MediaDevices
tags:
- API
- Experimental
- Interface
- Media
- MediaDevices
- NeedsTranslation
- TopicStub
translation_of: Web/API/MediaDevices
---
<div>{{APIRef("WebRTC")}}{{SeeCompatTable}}</div>
<p><span class="seoSummary">The <strong><code>MediaDevices</code></strong> interface provides access to connected media input devices like cameras and microphones, as well as screensharing.</span></p>
<h2 id="Properties">Properties</h2>
<p><em>None.</em></p>
<h2 id="Methods">Methods</h2>
<dl>
<dt>{{ domxref("MediaDevices.getUserMedia()") }}</dt>
<dd>With the user's permission through a prompt, turns on a camera or screensharing and/or a microphone on the system and provides a {{domxref("MediaStream")}} containing a video track and/or an audio track with the input.</dd>
<dt>{{ domxref("MediaDevices.enumerateDevices()") }}</dt>
<dd>Obtains an array of information about the media input and output devices available on the system.</dd>
</dl>
<h2 id="Example">Example</h2>
<pre class="brush:js">'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.onended = 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);
}
}</pre>
<h2 id="Specifications">Specifications</h2>
<table class="standard-table">
<tbody>
<tr>
<th scope="col">Specification</th>
<th scope="col">Status</th>
<th scope="col">Comment</th>
</tr>
<tr>
<td>{{SpecName('Media Capture', '#mediadevices', 'MediaDevices')}}</td>
<td>{{Spec2('Media Capture')}}</td>
<td>Initial definition</td>
</tr>
</tbody>
</table>
<h2 id="Browser_compatibility">Browser compatibility</h2>
<div>{{CompatibilityTable}}</div>
<div id="compat-desktop">
<table class="compat-table">
<tbody>
<tr>
<th>Feature</th>
<th>Chrome</th>
<th>Firefox (Gecko)</th>
<th>Internet Explorer</th>
<th>Opera</th>
<th>Safari (WebKit)</th>
</tr>
<tr>
<td>Basic support</td>
<td>{{CompatNo}}</td>
<td>{{CompatGeckoDesktop("36.0")}}</td>
<td>{{CompatNo}}</td>
<td>{{CompatNo}}</td>
<td>{{CompatNo}}</td>
</tr>
<tr>
<td><code>enumerateDevices()</code></td>
<td>{{CompatChrome(45.0)}}<sup>[1]</sup></td>
<td>{{CompatUnknown}}</td>
<td>{{CompatNo}}</td>
<td>{{CompatNo}}</td>
<td>{{CompatNo}}</td>
</tr>
</tbody>
</table>
</div>
<div id="compat-mobile">
<table class="compat-table">
<tbody>
<tr>
<th>Feature</th>
<th>Android</th>
<th>Android Webview</th>
<th>Firefox Mobile (Gecko)</th>
<th>Firefox OS</th>
<th>IE Mobile</th>
<th>Opera Mobile</th>
<th>Safari Mobile</th>
<th>Chrome for Android</th>
</tr>
<tr>
<td>Basic support</td>
<td>{{CompatNo}}</td>
<td>{{CompatNo}}</td>
<td>{{CompatGeckoMobile("36.0")}}</td>
<td>2.2</td>
<td>{{CompatNo}}</td>
<td>{{CompatNo}}</td>
<td>{{CompatNo}}</td>
<td>{{CompatNo}}</td>
</tr>
<tr>
<td><code>enumerateDevices()</code></td>
<td>{{CompatNo}}</td>
<td>{{CompatNo}}</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatNo}}</td>
<td>{{CompatNo}}</td>
<td>{{CompatNo}}</td>
<td>{{CompatNo}}</td>
</tr>
</tbody>
</table>
</div>
<p>[1] Behind a flag.</p>
<h2 id="See_also">See also</h2>
<ul>
<li><a href="/en-US/docs/WebRTC" title="/en-US/docs/WebRTC">WebRTC</a> - the introductory page to the API</li>
<li><a href="/en-US/docs/WebRTC/navigator.getUserMedia" title="/en-US/docs/WebRTC/navigator.getUserMedia">Navigator.getUserMedia()</a></li>
</ul>
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