Youtube API有什么问题(无效请求）

当我尝试使用youtube API上传视频时，我得到错误"无效请求"。

但是！

当我上传任何"图像"而不是"视频"时，它会返回状态"200"和视频ID。

为什么我不能上传视频？

$eq = 'accountType=HOSTED_OR_GOOGLE&Email='.$YOUTUBE_EMAIL.'&Passwd='.$YOUTUBE_PASS.'&service=youtube&source='.$API_NAME;
if ($fp = fsockopen ("ssl://www.google.com", 443, $errno, $errstr, 20))
{
    $request ="POST /youtube/accounts/ClientLogin HTTP/1.0'r'n";
    $request.="Host: www.google.com'r'n";
    $request.="Content-Type:application/x-www-form-urlencoded'r'n";
    $request.="Content-Length: ".strlen($eq)."'r'n";
    $request.="'r'n'r'n";
    $request.=$eq;
    fwrite($fp,$request,strlen($request));
    while (!feof($fp))
    $response.=fread($fp,8192);
    //fclose($fp);
}
preg_match("!(.*?)Auth=(.*?)'n!si",$response,$ok);
$AUTH_TOKEN = $ok[2];
$data = "<?xml version='1.0'?>
<entry xmlns='http://www.w3.org/2005/Atom'xmlns:media='http://search.yahoo.com/mrss/' xmlns:yt='http://gdata.youtube.com/schemas/2007'>
    <media:group>
     <media:title type='plain'>test</media:title>
     <media:description type='plain'>test</media:description>
     <media:category scheme='http://gdata.youtube.com/schema /2007/categories.cat'>People</media:category>
     <media:keywords>toast, wedding</media:keywords>
    </media:group>
</entry> ";
if ($fp = fsockopen ("gdata.youtube.com", 80, $errno, $errstr, 20))
{
    $request ="POST /action/GetUploadToken HTTP/1.1'r'n";
    $request.="Host: gdata.youtube.com'r'n";
    $request.="Content-Type: application/atom+xml; charset=UTF-8'r'n";
    $request.="Content-Length: ".strlen($data)."'r'n";
    $request .="Authorization: GoogleLogin auth=".$AUTH_TOKEN."'r'n";
    $request.="X-GData-Client: ".$API_NAME." 'r'n";
    $request.="X-GData-Key: key=".$API_KEY." 'r'n";
    $request.="'r'n";
    $request.=$data."'r'n";
    socket_set_timeout($fp, 10);
    fputs($fp,$request,strlen($request));
    $response = fread($fp,3280);
    fclose($fp);
}

preg_match('|<url>(.*)</url>|Uis', $response, $url);
preg_match('|<token>(.*)</token>|Uis', $response, $token);
print "
    <form action='".$url[1]."?nexturl=http%3A%2F%2Fwww.google.com' method='post' enctype='multipart/form-data'>
      <input type='file' name='file'>
      <input type='hidden' name='token' value='".$token[1]."'>
      <input type='submit' value='go'>
    </form> ";