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 Standard The definition of 'srcObject' in that specification. |
Living Standard | Initial definition. |
Browser compatibility
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
srcObject | Chrome
Partial support
52
| Edge
Partial support
12
| Firefox
Partial support
42
| IE No support No | Opera
Partial support
39
| Safari Full support 11 | WebView Android
Partial support
52
| Chrome Android
Partial support
52
| Firefox Android
Partial support
42
| Opera Android
Partial support
41
| Safari iOS Full support 11 | Samsung Internet Android
Partial support
6.0
|
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.