It's also possible to include video clips that play in the browser window. For some websites, such as the BBC's news site, video is an important part of the information content of the site. Most video on the web is streamed, just as audio often is; usually you'll need a plug-in or viewer to watch. There are several types of streamed video, the most common being RealVideo, and many more video formats for offline viewing.

When viewing video streams, the bandwidth of your connection becomes very important, and you'll need to choose the bandwidth of the video stream to match. Video is not very satisfactory on anything less than a broadband connection, as there's just not enough bandwidth to cope with anything other than the poorest quality.