Facebook Drops Flash for HTML5

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Facebook has "switched to HTML5 from a Flash-based video player for all
Facebook web video surfaces." The change to HTML5 for video is now the
default for all browsers. Facebook is "work[ing] together with Adobe to
deliver a reliable and secure Flash experience for games."
http://www.theregister.co.uk/2015/12/21/facebook_dumps_flash_for_video/