var tag = document.createElement('script');

tag.src = "https://www.youtube.com/iframe_api";
var firstScriptTag = document.getElementsByTagName('script')[0];
firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);

var videos = [];
var youTubeInitializedPd = false;
function onYouTubeIframeAPIReady() {

    var numOfVideos = document.querySelectorAll('.x-product-details-photo-gallery .main-gallery .video-item:not(.slick-cloned)').length;
    if (numOfVideos < 1)
        return;

    for (var i = 0; i < numOfVideos; i++) {
        videos[i] = new YT.Player('video' + i, {
            height: '100%',
            width: '100%',
            host: 'https://www.youtube.com',
            videoId: document.getElementById('video' + i).getAttribute('data-videoCode'),
            playerVars: {
                rel: '0',
                controls: '0',
                showinfo: '0'
            }
        });
        youTubeInitializedPd = true;
    }

}

function pauseVideo() {
    for (var i = 0; i < videos.length ; i++) {
        videos[i].pauseVideo();
    }
}