<script>
function getParameterByName(name, url) {
    if (!url) url = window.location.href;
    name = name.replace(/[\[\]]/g, '\\$&');
    var regex = new RegExp('[?&]' + name + '(=([^&#]*)|&|#|$)'),
        results = regex.exec(url);
    if (!results) return null;
    if (!results[2]) return '';
    return decodeURIComponent(results[2].replace(/\+/g, ' '));
}

function pauseVideoOnEnd() {
  var pl = document.querySelector("video");
  pl.ontimeupdate = function() {
    if (pl.currentTime >= end) pl.pause();
  }
}

var end = getParameterByName('end') || false;

if (end) {
  setTimeout(pauseVideoOnEnd, 3000);
}
</script>