title: Vimeo thumbnail larger than 640px
body: <p>I'm using code similar to this to add thumbnails of vimeo videos to a page.</p>
  
  <pre><code>    &lt;?php
  
          if(defined('AT_PROXY'))  {
                $aContext = array(
                    'http' =&gt; array(
                        'proxy' =&gt; AT_PROXY,
                        'request_fulluri' =&gt; true,
                    ),
                );
                $cxContext = stream_context_create($aContext);
  
                $contents = file_get_contents('http://vimeo.com/api/v2/video/'.$main_video.'.php', False, $cxContext);
           } else {
                $contents = file_get_contents('http://vimeo.com/api/v2/video/'.$main_video.'.php');
           }
  
          $main_video = 9700052;     
  
          $contents = file_get_contents('http://vimeo.com/api/v2/video/'.$main_video.'.php');
  
          $array = @unserialize(trim($contents));
          $video_thumbnail = str_replace('http://', 'https://',$array[0]["thumbnail_large"]);
      ?&gt;
  
       &lt;div class="video_thumbnail text-center"&gt;
  
            &lt;img src="&lt;?php echo $video_thumbnail ?&gt;" alt="" class="img-responsive" /&gt;
  
            &lt;div class="play js-play" data-vid="&lt;?php echo $main_video; ?&gt;"&gt;
                 &lt;span class="glyphicon glyphicon-play play-btn"&gt;&lt;/span&gt;
            &lt;/div&gt;
  
       &lt;/div&gt;
  </code></pre>
  
  <p>I'm using Javascript to play the movie when the js-play button is clicked.</p>
  
  <p>My problem is the size of the thumbnail, the large size is 640px but I would like it slightly larger.</p>
  
  <p>Is it possible to get the vimeo thumbnail at a larger size.</p>