VideoJS / Udemy play videos or movies at custom speed or faster using attribute playbackRate

document.querySelector(".vjs-tech").playbackRate = 4

Adjustments:

setInterval(function(){ 
document.querySelector(".vjs-tech").playbackRate = 4
}, 5000);

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Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store