MediaDevices
Experimental
Esta es una tecnología experimental
Comprueba la Tabla de compabilidad de navegadores cuidadosamente antes de usarla en producción.
The MediaDevices
interface provides access to connected media input devices like cameras and microphones, as well as screensharing.
Properties
None.
Methods
MediaDevices.getUserMedia()
- With the user's permission through a prompt, turns on a camera or screensharing and/or a microphone on the system and provides a
MediaStream
containing a video track and/or an audio track with the input. MediaDevices.enumerateDevices()
- Obtains an array of information about the media input and output devices available on the system.
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.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);
}
}
Specifications
Specification | Status | Comment |
---|---|---|
Media Capture and Streams La definición de 'MediaDevices' en esta especificación. |
Candidate Recommendation | Initial definition |
Browser compatibility
We're converting our compatibility data into a machine-readable JSON format.
This compatibility table still uses the old format,
because we haven't yet converted the data it contains.
Find out how you can help!
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
---|---|---|---|---|---|
Basic support | Sin soporte | 36.0 (36.0) | Sin soporte | Sin soporte | Sin soporte |
enumerateDevices() |
45.0[1] | ? | Sin soporte | Sin soporte | Sin soporte |
Feature | Android | Android Webview | Firefox Mobile (Gecko) | Firefox OS | IE Mobile | Opera Mobile | Safari Mobile | Chrome for Android |
---|---|---|---|---|---|---|---|---|
Basic support | Sin soporte | Sin soporte | 36.0 (36.0) | 2.2 | Sin soporte | Sin soporte | Sin soporte | Sin soporte |
enumerateDevices() |
Sin soporte | Sin soporte | ? | ? | Sin soporte | Sin soporte | Sin soporte | Sin soporte |
[1] Behind a flag.
See also
- WebRTC - the introductory page to the API
- Navigator.getUserMedia()