The first "working draft" of HTML5 came out in January of 2008 and it already has surprisingly broad browser support.In many ways HTML5 is not all that different that 4.01. Certain tags, such as the font tag, that were "deprecated" (but worked) in HTML 4.01, don't work in HTML5. There are a number of other odds and ends that have been changed, but they tidy up old messes rather than introduce fundamental changes. HTML5 Video tag is the best method to add video in a website.It is very easy to use,before it was very complicated task needed to use many scripts.

HTML5 is not just the future of web design, it's the present.

HTML tag and discription given below