title: Looking for an overview of YouTube API caption data. Trying to find how many videos from a set have CCs (autogenerated or otherwise)
body: <p>I'd like to take a set of YT videos and, from the metadata, determine:</p>
  <ol>
  <li>how many of them have closed captioning</li>
  <li>whether it's autogenerated closed captioning</li>
  <li>what language the captions are in</li>
  </ol>
  <p>I know there's contentDetails.caption, but in the set I'm looking at, I get &quot;false&quot; for all videos while several of them do in fact have autogenerated closed captioning. This leads me to wonder the best way to answer these questions.</p>