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<html> <body> <p>In this example, we assign an "onratechange" event to a video element. The playbackRate property is used to change the playing speed of the video.</p><video id="myVideo" width="320" height="240" autoplay controls onratechange="myFunction()"> <source src="movie.mp4" type="video/mp4"> <source src="movie.ogg" type="video/ogg"> Your browser does not support the video tag.</video><br><button onclick="setPlaySpeed()" type="button">Set video to be play in slow motion</button><script>// Get the video element with id="myVideo"var x = document.getElementById("myVideo");// Set the current playback speed of the video to 0.3 (slow motion)function setPlaySpeed() { x.playbackRate = 0.3;} // Alert some text when the playing speed of the video is changedfunction myFunction() { alert("The playing speed of the video was changed");}</script> </body> <!-- Mirrored from www.w3schools.com/jsref/tryit.asp?filename=tryjsref_onratechange_html by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 03:02:58 GMT --></html>