All that 'HTML 5 video' did was move responsibility for the media player from an extension and into the browser, and wrap it in standard markup. So ironically

All that 'HTML 5 video' did was move responsibility for the media player from an extension and into the browser, and wrap it in standard markup. So ironically the designer no longer just asks 'is Flash available on this platform?' but instead 'which codecs are available on this browser and platform?'.