Microsoft has a long history of being non-compliant with web standards. For example, it took until Internet Explorer 7 to support many of the CSS attributes that were commonly supported by rivals Firefox and Safari. However, as speculation that Microsoft may not support new tags from the new HTML5 standard, looks like we were wrong. In a shock to many, Program Manager for IE, Adrian Bateman, said that the next version of Internet Explorer will be supporting the two media tags – <audio> and <video>.
Out of all the browsers, the latest version of Firefox, Chrome, Opera and Safari have support for the new HTML 5 tags, but all have different ways on playing the format as the working group have made no specification on what codec should the browser use. The team over at Redmond have not made any comment on how will they support the codec.