jQuery Simple Example

HTML

<script src="//www.addressfinder.co.nz/assets/v2/widget.js"></script>
<video id="video" width="200" height="200" controls>
   <source id='currentVID' src="" type="video/mp4">
</video>

CSS

video.loading {
  background: black url(http://blog.teamtreehouse.com/wp-content/uploads/2015/05/InternetSlowdown_Day.gif) center center no-repeat;
}

JavaScript

var actualvideo = 'https://api-files.sproutvideo.com/file/7c9adbb51915e2cdf4/b6e4822661adad1aremovethis/240.mp4';
if (actualvideo !== '') {
    var video = document.getElementById('video');
    
    $('video source').last().on('error', function() {
    
    alert('something went wrong');
    
    });
    
    
    video.pause();
    var source = document.getElementById('currentVID');
    source.setAttribute('src', actualvideo);
    video.appendChild(source);
}