title: YouTube API V3: Where can i find a list of each 'videoCategoryId'?
body: <p>I'm using the Youtube API V3 but can't find documentation for how to filter by category:</p>
  
  <p>Here's my code:</p>
  
  <pre><code>$results = $youtube-&gt;search-&gt;listSearch('id,snippet', array(
      'q' =&gt;                  $_GET['q'],
      'maxResults' =&gt;         20,
      'type' =&gt;               'video'
      'videoCategoryId' =&gt;    'what-do-i-put-here?',
  ));
  </code></pre>
  
  <p>I've been going through their documentation for an hour and can't seem to find any reference to how I find out what the various category's ids are. In my case I'm looking for the videoCategoryId for music....</p>