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 timeSecond = 0;
	var timeAudioSecond = 0;
	var player;

	function onYouTubeIframeAPIReady() {
		player = new YT.Player('player', {
			events: {
				'onReady': null,
				'onStateChange': onPlayerStateChange
			}
		});
	}

	function YouTubeGetID(url){
		var ID = '';
		url = url.replace(/(>|<)/gi,'').split(/(vi\/|v=|\/v\/|youtu\.be\/|\/embed\/)/);
		if(url[2] !== undefined) {
			ID = url[2].split(/[^0-9a-z_\-]/i);
			ID = ID[0];
		}
		else {
			ID = url;
		}
		return ID;
	}
	$('#video-link').change( function(){
		var htm = '<iframe id="player" title="video player" width="734" height="413" src="http://www.youtube.com/embed/' +  YouTubeGetID($('#video-link').val()) + '??enablejsapi=1&autoplay=0" frameborder="0" allowfullscreen ></iframe>';
		$('#player-all-host').html(htm);
	});


	$('#play-video').on('click', function(ev) {
		player.loadVideoById({ 'videoId': YouTubeGetID($('#video-link').val()), 'startSeconds': timeSecond }).playVideo();
	});

<button type="button" id="play-video" class="btn  btn-preview btn-block ">Play</button>