Media includes any element of a site that has an audio/visual theme. Although video media has been available on the internet for a while (typically via Windows Media Player and RealPlayer), embedded media was not as popular until the creation of YouTube.com in 2005. Since the creation on YouTube and the ever increasing availability of fast broadband, online media has become a mainstream internet medium.
YouTube embeddable video remains one of the most popular ways to add audio and video media to a website. Most videos viewable on youtube.com are also embeddable on websites.