<video> tag| Browser | Version | Available Since | Release State |
|---|---|---|---|
| Opera | 9.5.2 preview | 7 November 2007 | Beta |
| Safari | Nightly | 12 November 2007 | Alpha |
| Safari | 3.1 | 17 March 2008 | Final |
| Firefox | Nightly | 30 July 2008 | Alpha |
| Firefox | 3.1 b1 | 14 October 2008 | Beta |
| Chrome | 3.0 | 27 May 2009 | Alpha |
| Firefox | 3.5 | 30 June 2009 | Final |