Youtube Video Looper

loop.js

function loop(video, loopStart, loopEnd) {
    function _check() {
        if (video.currentTime >= loopEnd) {
            video.currentTime = loopStart;
        }
    }

    const interval = window.setInterval(_check, 50);

    return () => window.clearInterval(interval);
}

const video = document.querySelector('.html5-main-video');

// loop one minute
// call stop() once done ;)
const stop = loop(video, 60, 120);