Example of using an PHP to access JSON if jQuery fails.

Use PHP to access JSON

<?php 
  $response = wp_remote_get( '$API_URL' );
  if( is_wp_error( $response ) ) {
      echo 'Something went wrong!';
  } else {
      echo 'Response:<pre>';
      print_r( $response );
      echo '</pre>';
  }

  $decodedResponse = json_decode($response['body']);
  $items = $decodedResponse->items;
  <?php 
    foreach($items as $item) {
    if($item->id == $videoID) { ?>
      <img src="<?php echo $item->videoStillURL; ?>" />
    <?php break;
    }
} ?>
?>