When you use HTML5, you can create your own customized media controllers for rich interactivity using web-standard CSS and JavaScript. The HTML5 media elements provide simple fallback for browsers that still need to use plug-ins, so you can update your website to HTML5 today and still be compatible with older browsers. With HTML5, you can add media to a webpage with just a line or two of code. HTML5 supports audio and video playback natively in the browser, without requiring a plug-in.

HTML5 is the next major version of HTML, the primary standard that determines how web content interacts with browsers. If you embed audio or video in your website, you should use HTML5.