Play youtube by clicking the custom icon.

Youtube API

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

    var player;

    onYouTubeIframeAPIReady = function () {
        player = new YT.Player( 'player', {
            height: '375',
            videoId: $( '#video' ).data( 'videoid' ),  // youtube video id
            playerVars: {
                'autoplay': 0,
                'rel': 0,
                'showinfo': 0
            },
            events: {
                'onStateChange': onPlayerStateChange
            }
        } );
    }
    onPlayerStateChange = function (event) {
        if ( event.data == YT.PlayerState.ENDED ) {
            $( '#start-video' ).fadeIn( 'normal' );
        }
    }
    $( document ).on('click', '#start-video', function (e) {
        e.preventDefault();
        $( this ).fadeOut( 'normal' );
        player.playVideo();
    } );