Adobe Flash Player
Steve Jobs also claimed that a large percentage of the video on the Internet is supported on iOS, since many popular video sharing websites such as YouTube have published video content in an HTML5 compatible format, enabling videos to playback in mobile web browsers even without Flash Player.
Comparison of HTML5 and Flash
The table below compares the features of the Flash platform, the HTML5 specification and the features implemented in modern web browsers.Web browsers cannot render Flash media themselves. Instead, Flash is primarily rendered via the proprietary, but freely available, Adobe Flash Player. Until 2008, there was no official specification by which to create an alternative player. Alternative players have been developed before 2008, but they support Flash to a lesser degree than the official one.