How to change the playback speed of a video in HTML5?

Use theplaybackRateproperty to set the current playback speed of audio/video. Through this attribute, thedefaultPlaybackRateattribute sets the default playback speed of audio/video.

You can try running the following code to change the playback speed of the video −

/* play video thrice as fast */ document.querySelector('video').defaultPlaybackRate = 3.0; document.querySelector('video').play();

Here’s how to play the video at twice the speed −

/* play video twice as fast */ document.querySelector('video').playbackRate = 2;

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