nicolasmatos

(function() {

var playlist = document.querySelector("ytd-playlist-video-list-renderer"),
    timeSeconds = 0,
    timesContainer = playlist.querySelectorAll("ytd-thumbnail-overlay-time-status-renderer");

for(var i = 0; i < timesContainer.length; i++){
    var timeStr = timesContainer[i].childNodes[0].innerHTML,
	timeParts = timeStr.split(":"),
	seconds = (timeParts[0] * 60) + parseInt(timeParts[1]);