antonmoshkin

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

$("iframe").each(function(indx){
 var min = $(this)[0].src.indexOf('?');
 var src = $(this)[0].src.substr(0, min) + '?enablejsapi=1';
 $(this)[0].src = src;
 $(this)[0].id = 'player' + indx;
});

function onPlayerStateChange(event) {
 var flag = 0;
 $(players).each(function(){
  if(this.getPlayerState() == 1){
   flag += 1;
  }
 });
 if(event.data == 1 && flag > 1){
  stop_all();
  event.target.playVideo();
 }
}

function stop_all (){
 $(players).each(function(){
  this.pauseVideo();
 });
}

var players = [];
function onYouTubeIframeAPIReady() {
$("iframe").each(function(indx){
 var temp = new YT.Player('player' + indx, {
  events: {
   'onStateChange': onPlayerStateChange
  }
 });
 players.push(temp);
});
}