How to upload large files on YouTube using Youtube API V3

I am using the following code to upload large files onto Youtube, but it chunks the large files into different parts, and rather than sending them separately and upload them at once it uploads them separately.

So at the end I have a long list of unloadable different parts of the file on youtube rather than a single file.

if you cant help with following code Do you know of any other sample code or alternative method?

if ($client->getAccessToken()) {
  $videoPath = "path/to/foo.mp4";
  $snippet = new Google_VideoSnippet();
  $snippet->setTitle("Test title2");
  $snippet->setDescription("Test descrition");
  $snippet->setTags(array("tag1", "tag2"));
  $snippet->setCategoryId("22");

  $status = new Google_VideoStatus();
  $status->privacyStatus = "private";

  $video = new Google_Video();
  $video->setSnippet($snippet);
  $video->setStatus($status);

  $chunkSizeBytes = 1 * 1024 * 1024;
  $media = new Google_MediaFileUpload('video/mp4', null, true, $chunkSizeBytes);
  $media->setFileSize(filesize($videoPath));

  $result = $youtube->videos->insert("status,snippet", $video,
      array('mediaUpload' => $media));

  $status = false;
  $handle = fopen($videoPath, "rb");
  while (!$status && !feof($handle)) {
    $chunk = fread($handle, $chunkSizeBytes);
    $uploadStatus = $media->nextChunk($result, $chunk);
  }

  fclose($handle);
}

I found this question which its answer code is similar to google_mediaFileupload but I am not sure how to use it.