The srcObject
property of the HTMLMediaElement
interface sets or returns the object which serves as the source of the media associated with the HTMLMediaElement
. The object can be a MediaStream
, a MediaSource
, a Blob
, or a File
(which inherits from Blob
).
Note: As of March 2020, only Safari supports setting objects other than MediaStream
. Until other browsers catch up, for MediaSource
, Blob
and File
, consider falling back to creating a URL with URL.createObjectURL()
and assign it to HTMLMediaElement.src
. See below for an example.
Syntax
var sourceObject = HTMLMediaElement.srcObject; HTMLMediaElement.srcObject = sourceObject;
Value
A MediaStream
, MediaSource
, Blob
, or File
object (though see the compatibility table for what is actually supported).
Usage notes
Older versions of the Media Source specification required using createObjectURL()
to create an object URL then setting src
to that URL. Now you can just set srcObject
to the MediaStream
directly.
Examples
Basic example
In this example, a MediaStream
from a camera is assigned to a newly-created <video>
element.
const mediaStream = await navigator.mediaDevices.getUserMedia({video: true});
const video = document.createElement('video');
video.srcObject = mediaStream;
In this example, a new MediaSource
is assigned to a newly-created <video>
element.
const mediaSource = new MediaSource();
const video = document.createElement('video');
video.srcObject = mediaSource;
Supporting fallback to the src property
The examples below support older browser versions that require you to create an object URL and assign it to src
if srcObject
isn't supported.
First, a MediaStream
from a camera is assigned to a newly-created <video>
element, with fallback for older browsers.
const mediaStream = await navigator.mediaDevices.getUserMedia({video: true});
const video = document.createElement('video');
if ('srcObject' in video) {
video.srcObject = mediaStream;
} else {
// Avoid using this in new browsers, as it is going away.
video.src = URL.createObjectURL(mediaStream);
}
Second, a new MediaSource
is assigned to a newly-created <video>
element, with fallback for older browsers and browsers that don't yet support assignment of MediaSource
directly.
const mediaSource = new MediaSource(); const video = document.createElement('video'); // Older browsers may not have srcObject if ('srcObject' in video) { try { video.srcObject = mediaSource; } catch (err) { if (err.name != "TypeError") { throw err; } // Even if they do, they may only support MediaStream video.src = URL.createObjectURL(mediaSource); } } else { video.src = URL.createObjectURL(mediaSource); }
Specifications
Specification | Status | Comment |
HTML Living StandardThe definition of 'srcObject' in that specification. | Living Standard | Initial definition. |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Update compatibility data on GitHub
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
srcObject
|
Chrome Partial support 52 Partial support 52 Notes' Currently only supports |
Edge Partial support 12 Partial support 12 Notes' Currently only supports |
Firefox Partial support 42 Partial support 42 Notes' Currently only supports Prefixed' Implemented with the vendor prefix: moz |
IE
No support No |
Opera Partial support 39 Partial support 39 Notes' Currently only supports |
Safari
Full support 11 |
WebView Android Partial support 52 Partial support 52 Notes' Currently only supports |
Chrome Android Partial support 52 Partial support 52 Notes' Currently only supports |
Firefox Android Partial support 42 Partial support 42 Notes' Currently only supports Prefixed' Implemented with the vendor prefix: moz |
Opera Android Partial support 41 Partial support 41 Notes' Currently only supports |
Safari iOS
Full support 11 |
Samsung Internet Android Partial support 6.0 Partial support 6.0 Notes' Currently only supports |
Legend
- Full support
- Full support
- Partial support
- Partial support
- No support
- No support
- See implementation notes.'
- See implementation notes.
- Requires a vendor prefix or different name for use.'
- Requires a vendor prefix or different name for use.
HTMLMediaElement.srcObject by Mozilla Contributors is licensed under CC-BY-SA 2.5.