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CSS

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JavaScript

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HTML 

              
                <div class="video-wrapper">
  <video class="video-js" preload="auto" muted playsinline></video>
  <div class="video-inner">
    <span></span>
    <ul>
      <li>
        <div class="inner">          
          <h2>1-3 seconds</h2>
          <p>テキストをひょうじ</p>
        </div>
      </li>
      <li>
        <div class="inner">          
          <h2>5-8 seconds</h2>
          <p>5びょうめから8びょうめ</p>
        </div>
      </li>
      <li>
        <div class="inner">          
          <h2>9-11 seconds</h2>
          <p>ぜんたいにフィルターをかける</p>
        </div>
      </li>
      <li>
        <div class="inner">          
          <h2>12-16 seconds</h2>
          <div class="content">
            <div class="balloon_wrapper">
              <p class="balloon3">がぞうと<br>テキストを<br>かさねてみる</p>
            </div>
            <img src="https://homemadegarbage.com/assets/images/icon-dolphin.png" alt="">
          </div>
        </div>
      </li>
      <li>
        <div class="inner">          
          <h2>17- seconds</h2>
          <p>END...フェードアウト</p>
        </div>
      </li>
      <li><!-- フェードアウト用要素--></li>
    </ul>
  </div>
</div>
!

CSS 

              
                body {
  margin: 0;
}

/* ビデオ */
.video-wrapper {
  width: 100%;
  position: relative;
  padding-top: 56.25%;
  background: none;
}
#vjs_video_3 {
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  background: none;
}

/* 動画の上に表示する要素のスタイル */
.video-inner {
  position: absolute;
  top: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  color: white;
  text-align: center;
}
.video-inner li {
  font-size: 2rem;
  opacity: 0;
  position: absolute;
  top: 0;
  Left: 0;
  bottom: 0;
  width: 100%;
}
.video-inner li .inner {
  position: relative;
}
.video-inner li:nth-child(3) {
  background: rgba(0,0,0,.5)
}

h2 {
  font-family: 'Cabin Sketch', cursive;
}
p,span {
  font-family: "Nico Moji";
}
img {
  position: absolute;
  left: 50%;
}
span {
  position: absolute;
  right: 1rem;
  top: 1rem;
  z-index: 2;
}
.content {
  width: 90%;
  height: 90%;
  text-align: center;
  margin: auto;
  position: relative;
}
/* 吹き出し */
.balloon_wrapper {
  position: absolute;
  left: 10%;
  margin-top: -1rem;
}
.balloon3{
  position: relative;
  padding: 8%;
  width: 120px;
  height: 80px;
  padding: 1rem;
  border-radius: 30px;
  text-align: center;
  color: #ffffff;
  letter-spacing: 0.2em;
  font-size: 14px;
  background-color: #6baad4;
  text-align: center;
  box-sizing: border-box;
}
.balloon3::before{
  content: '';
  position: absolute;
  display: block;
  width: 0;
  height: 0;
  right: 2px;
  bottom: 2px;
  border-right: 20px solid #6baad4;
  border-top: 10px solid transparent;
  border-bottom: 10px solid transparent;
  transform: rotate(-45deg);
}
/* フェードアウト */
li:nth-child(6) {
  background: #000;
}
 

@media only screen and (min-width: 750px) {
  h2 {
    font-size: 5rem;
  }
  .balloon_wrapper {
    left: 25%;
  }
  img {
    left: 0;
    right: 0;
    margin: auto;
  }
  .content {
    width: 60%;
  }
}
!

JS 

              
                // videojs
var player = videojs(document.querySelector('video'), {
  autoplay: true,
	preload: true,
  loop: true
});
player.ready(function () {
  player.src({
	src: 'http://homemadegarbage.com/demo/assets/mov.mp4'
	});
});

// 表示切り替え
var speed = 1000;
var showElement = function(e,start,end) {
  showElement.time == start && $(e).animate({ opacity: 1 }, speed);
  end && showElement.time == end && $(e).animate({ opacity: 0 }, speed);  
};

var prevTime = 0;
player.on('timeupdate', function () {
  $('span').text(player.currentTime());
  var currentTime = Math.floor(player.currentTime());
  if (currentTime != prevTime) {
    currentTime == 0 && $('.video-inner li').css('opacity','0');
    showElement.time = currentTime;
    showElement('.video-inner li:nth-child(1)',1,3);
    showElement('.video-inner li:nth-child(2)',5,8);
    showElement('.video-inner li:nth-child(3)',9,11);
    showElement('.video-inner li:nth-child(4)',12,16);
    showElement('.video-inner li:nth-child(5)',17);
    showElement('.video-inner li:nth-child(6)',19);
  }
  prevTime = currentTime;
});
!
999px

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