<source>
Widely available
The <source> element sets a media resource for the <picture>, <video>, and <audio> elements.
Compatibility
- Chrome 3 Released on 2009-09-15
- Chrome Android 18 Released on 2012-06-27
- Edge 12 Released on 2015-07-29
- Firefox 3.5 Released on 2009-06-30
- Firefox for Android 4 Released on 2011-03-29
- Safari 3.1 Released on 2008-03-18
- Safari on iOS 2 Released on 2008-07-11
MDN docs
Specifications
- HTML Standard, from HTML Workstream (WHATWG).