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<html><body><video id="myVideo" controls autoplay> <source id="mp4_src" src="mov_bbb.mp4" type="video/mp4"> <source id="ogg_src" src="mov_bbb.ogg" type="video/ogg"> Your browser does not support the video tag.</video><p>Click the button to change the video source and re-load the video.</p><button onclick="myFunction()">Try it</button><script>function myFunction() { document.getElementById("mp4_src").src = "movie.mp4"; document.getElementById("ogg_src").src = "movie.ogg"; document.getElementById("myVideo").load();}</script><p>Video courtesy of <a href="https://www.bigbuckbunny.org/" target="_blank">Big Buck Bunny</a>.</p></body></html>