YouTube today announced it has finally stopped using Adobe Flash by default. The site now uses its HTML5 video player by default in Google’s Chrome, Microsoft’s IE11, Apple’s Safari 8, and in beta versions of Mozilla’s Firefox browser.
At the same time, YouTube is now also defaulting to its HTML5 player on the web. In fact, the company is deprecating the “old style” Flash object embeds and its Flash API, pointing users to the iframe API instead, since the latter can adapt depending on the device and browser you’re using.
Source: www.venturebeat.com