if($client->getAccessToken()) {
$snippet = new Google_VideoSnippet();
$snippet->setTitle("Test title");
$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);

$error = true;
$i = 0;

try {
$obj = $youTubeService->videos->insert("status,snippet", $video,
array("data"=>file_get_contents("video.mp4"),
"mimeType" => "video/mp4"));
} catch(Google_ServiceException $e) {
print "Caught Google service Exception ".$e->getCode(). " message is ".$e->getMessage(). "
";
print "Stack trace is ".$e->getTraceAsString();
}
}

(Kaynak)

Biraz araştırırsan daha faydalı sonuçlar elde edebilirsin.