Amazon Video
Customers of Amazon Video can stream on the web using an HTML5 player (supported in Chrome, Firefox, Internet Explorer 11, Edge, Safari and Opera).
VP9
VP9 is implemented in these web browsers:
Internet Explorer and Apple Safari are missing VP9 support completely.
In March 2016 an estimated 65 to 75% of browsers in use on desktop and notebook systems were able to play VP9 videos in HTML5 webpages, based on data from StatCounter.