Video on the Web
Until now, there has not been a standard for showing a video/movie on a web page. Today, most videos are shown through a plug-in (like flash). However, different browsers may have different plug-ins. HTML5 defines a new element which specifies a standard way to embed a video/movie on a web page: the <video> element.
The HTML5 draft specification introduced the video element for the purpose of playing videos or movies, partially replacing the object element. HTML5 video is intended by its creators to become the new standard way to show video on the web without plugins, but has been hampered by lack of agreement as to which video formats should be supported in web browsers.