Zencoder
Zencoder is the creator of an open-source HTML5 video player, Video.js, built with Javascript, HTML, and CSS. Video.js plays video via native playback in all HTML5 browsers and devices, or through Adobe Flash when HTML5 playback is not available.
HTML5 Shiv
Using HTML5 Shiv on an HTML5 web page is simple; you may do so with or without installation of the library. Below is an example of how to conditionally include HTML5 Shiv only for Internet Explorer browsers less-than version 9. The script should be included within the codice_1 element of the page, after any stylesheets: