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@kamilogorek
Last active February 19, 2020 15:42
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var elements = Array.from(document.querySelectorAll(".ytd-playlist-video-list-renderer span.ytd-thumbnail-overlay-time-status-renderer"))
var time = elements.map(v => {
const [s,m,h] = v.innerText.split(':').reverse().map(x => parseInt(x,10));
return s + (m || 0) * 60 + (h || 0) * 60 * 60;
})
var total = time.reduce((acc, v) => acc + v);
var h = Math.floor(total / (60 * 60));
var m = Math.floor((total - (h * 60 * 60)) / 60);
var s = total%60;
console.log(`${h.toString().padStart(2, '0')}:${m.toString().padStart(2, '0')}:${s.toString().padStart(2, '0')}`);
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