YouTube Now Defaults to HTML5 Video Player Instead of Flash

YouTube has announced that its now defaulting to its HTML5 video player instead of its Flash player.
The site first implemented a HTML5 player four years ago but HTML5 was missing support for certain features such as Adaptive Bitrate (ABR); however, thanks to browser improvements many of the technical hurdles have been overcome.
Over the last four years, we’ve worked with browser vendors and the broader community to close those gaps, and now, YouTube uses HTML5 video by default in Chrome, IE 11, Safari 8 and in beta versions of Firefox.
Here are some of the key technologies that were necessary to make this possible:
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