jQuery

domainsToDecorateにドメイン名を書き、

queryParamsに引き継ぎたいパラメータを書くだけ。

<script>
(function() {
  var domainsToDecorate = [
          'domain1.com', //add or remove domains (without https or trailing slash)
          'domain2.net'
      ],
      queryParams = [
          'utm_medium', //add or remove query parameters you want to transfer
          'utm_source',
          'utm_campaign',
          'something_else'
      ]
  // do not edit anything below this line
  var links = document.querySelectorAll('a'); 

// check if links contain domain from the domainsToDecorate array and then decorates
  for (var linkIndex = 0; linkIndex < links.length; linkIndex++) {
      for (var domainIndex = 0; domainIndex < domainsToDecorate.length; domainIndex++) { 
          if (links[linkIndex].href.indexOf(domainsToDecorate[domainIndex]) > -1 && links[linkIndex].href.indexOf("#") === -1) {
              links[linkIndex].href = decorateUrl(links[linkIndex].href);
          }
      }
  }
// decorates the URL with query params
  function decorateUrl(urlToDecorate) {
      urlToDecorate = (urlToDecorate.indexOf('?') === -1) ? urlToDecorate + '?' : urlToDecorate + '&';
      var collectedQueryParams = [];
      for (var queryIndex = 0; queryIndex < queryParams.length; queryIndex++) {
          if (getQueryParam(queryParams[queryIndex])) {
              collectedQueryParams.push(queryParams[queryIndex] + '=' + getQueryParam(queryParams[queryIndex]))
          }
      }
      return urlToDecorate + collectedQueryParams.join('&');
  }

  // borrowed from https://stackoverflow.com/questions/831030/
  // a function that retrieves the value of a query parameter
  function getQueryParam(name) {
      if (name = (new RegExp('[?&]' + encodeURIComponent(name) + '=([^&]*)')).exec(window.location.search))
          return decodeURIComponent(name[1]);
  }

})();
</script>

<video id="video01" src="movie.mp4" autoplay muted loop controls playsinline></video>
<div class="control">
<divid="play" class="hidden"><iclass="fa fa-play"></i></div>
<divid="stop"><iclass="fa fa-pause"></i></div>
<divid="mute"><iclass="fa fa-volume-off"></i><iclass="fa fa-volume-up hidden"></i></div>
</div>
<!-- /.control -->

    $(function() {
        // 操作対象のvideoを指定
        var video = $('#video01').get(0);
        // 動画の再生 
        $('#play').click(function() {
            $('#play').addClass('hidden');
            $('#stop').removeClass('hidden');
            video.play();
        });
        // 動画の一時停止
        $('#stop').click(function() {
            $('#play').removeClass('hidden');
            $('#stop').addClass('hidden');
            video.pause();
        });
        // 動画の頭出し（任意の秒へ移動）
        $('#atama').click(function() {
            video.currentTime = 0; // 入れた秒の位置へ移動（例は0秒）
        });
        // 音声ミュート（トグル式）
        $('#mute').click(function() {
            if (video.muted) {
                video.muted = false;
                $('#mute .fa-volume-off').addClass('hidden');
                $('#mute .fa-volume-up').removeClass('hidden');
            } else {
                video.muted = true;
                $('#mute .fa-volume-off').removeClass('hidden');
                $('#mute .fa-volume-up').addClass('hidden');
            }
        });
        //音量アップ
        $('#vol-up').click(function() {
            if (video.volume <= 0.75) {
                video.volume = video.volume + 0.25;
                $("#vol").text(video.volume);
            }
        });
        //音量ダウン
        $('#vol-down').click(function() {
            video.volume = video.volume - 0.25;
            $("#vol").text(video.volume);
        });
        //音量表示
        $("#vol").text(video.volume);
    });