Youtube class download falhou

Olá a uns dias a class que eu estava usando parou de funcionar do nada, preciso muito dela como posso resolver o problema? ela me informava o link dos arquivos de audio/video de um video especifico do youtube.. veja os codigos.

curl.php

<?php
/*******************************************************************************
* CURL Class
*******************************************************************************
* Author: Vikas Patial
* Email: admin@ngcoders.com
* Website: http://www.ngcoders.com
*
* File: curl.php
* Version: 1.0.0
* Copyright: (c) 2008 - Vikas Patial
* You are free to use, distribute, and modify this software
* under the terms of the GNU General Public License. See the
* included license.txt file.
*
*******************************************************************************
* VERION HISTORY:
*
* v1.0.0 [18.9.2008] - Initial Version
*
*******************************************************************************
* DESCRIPTION:
*
* NOTE: See www.ngcoders.com for the most recent version of this script
* and its usage.
*
*******************************************************************************
*/

class Curl {

	var $callback = false;
	var $secure = false;
	var $conn = false;
	var $cookiefile =false;
	var $header = false;
	var $cookie = false;
	var $follow = true;

	function Curl($u = false) {
 $this->conn = curl_init();
 if (!$u) {
 $u = rand(0,100000);
 }

 //$this->cookiefile= APP_PATH.'/cache/'.md5($u);
	}

	function setCallback($func_name) {
 $this->callback = $func_name;
	}

	function close() {
 curl_close($this->conn);
 if (is_file($this->cookiefile)) {
 unlink($this->cookiefile);
 }

	}

	function doRequest($method, $url, $vars) {

 $ch = $this->conn;

 $user_agent = "Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0)";

 curl_setopt($ch, CURLOPT_URL, $url);
 if ($this->header) {
 curl_setopt($ch, CURLOPT_HEADER, 1);
 } else {
 curl_setopt($ch, CURLOPT_HEADER, 0);
 }
 curl_setopt($ch, CURLOPT_USERAGENT,$user_agent);

 if($this->secure) {
 curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
 curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
 }

 if ($this->cookie)
 {
 curl_setopt($ch, CURLOPT_COOKIE,$this->cookie);
 }

 if ($this->follow) {
 curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
 } else {
 curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 0);
 }

 curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
 //curl_setopt($ch, CURLOPT_COOKIEJAR, $this->cookiefile);
 curl_setopt($ch, CURLOPT_COOKIEFILE, $this->cookiefile);

 if ($method == 'POST') {
 curl_setopt($ch, CURLOPT_POST, 1);
 curl_setopt($ch, CURLOPT_POSTFIELDS, $vars);
 curl_setopt($ch, CURLOPT_HTTPHEADER, array('Expect: ')); // lighttpd fix
 }

 $data = curl_exec($ch);

 if ($data) {
 if ($this->callback)
 {
 $callback = $this->callback;
 $this->callback = false;
 return call_user_func($callback, $data);
 } else {
 return $data;
 }
 } else {
 return false;
 }
	}

	function get($url) {
 return $this->doRequest('GET', $url, 'NULL');
	}

	function getError()
	{
 return curl_error($ch);
	}

	function post($url, $params = false) {

 $post_data = '';

 if (is_array($params)) {

 foreach($params as $var=>$val) {
 if(!empty($post_data))$post_data.='&';
 $post_data.= $var.'='.urlencode($val);
 }

 } else {
 $post_data = $params;
 }

 return $this->doRequest('POST', $url, $post_data);
	}
}

function getPage($url,$post = false,$cookie = false)

 $pURL = parse_url($url);

 $curl = new Curl($pURL['host']);

 if (strstr($url,'https://'))
 {
 $curl->secure = true;
 }

 if ($post) {
 return $curl->post($url,$post);
 } else {
 return $curl->get($url);
 }

}

<?php
/*******************************************************************************
* Youtube Class
*******************************************************************************
* Author: Vikas Patial
* Email: admin@ngcoders.com
* Website: http://www.ngcoders.com
*
* File: youtube.php
* Version: 1.0.0
* Copyright: (c) 2008 - Vikas Patial
* You are free to use, distribute, and modify this software
* under the terms of the GNU General Public License. See the
* included license.txt file.
*
*******************************************************************************
* VERION HISTORY:
*
* v1.1.0 [19.12.2012] - Fix
* v1.1.0 [30.03.2011] - Fix
* v1.0.0 [18.9.2008] - Initial Version
*
*******************************************************************************
* DESCRIPTION:
*
* NOTE: See www.ngcoders.com for the most recent version of this script
* and its usage.
*
*******************************************************************************
*/

class youtube {

 var $conn = false;
 var $username = "";
 var $password = "";
 var $error = false;

 function get($url)
 {
 $this->conn = new Curl('youtube');

 $html = $this->conn->get($url);

 if(strstr($html,'verify-age-thumb'))
 {
 $this->error = "Adult Video Detected";
 return false;
 }

 if(strstr($html,'das_captcha'))
 {
 $this->error = "Captcah Found please run on diffrent server";
 return false;
 }

 if(!preg_match('/stream_map=(.[^&]*?)&/i',$html,$match))
 {
 $this->error = "Error Locating Downlod URL's";
 return false;
 }

 if(!preg_match('/stream_map=(.[^&]*?)(?:\\\\|&)/i',$html,$match))
 {
 return false;
 }

 $fmt_url = urldecode($match[1]);

 $urls = explode(',',$fmt_url);

 $foundArray = array();

 foreach($urls as $url)
 {
 if(preg_match('/itag=([0-9]+)/',$url,$tm) && preg_match('/sig=(.*?)&/', $url , $si) && preg_match('/url=(.*?)&/', $url , $um))
 {
 $u = urldecode($um[1]);
 $foundArray[$tm[1]] = $u.'&signature='.$si[1];
 }
 }

 $typeMap = array();

 $typeMap[13] = array("13", "3GP", "Low Quality - 176x144");
 $typeMap[17] = array("17", "3GP", "Medium Quality - 176x144");
 $typeMap[36] = array("36", "3GP", "High Quality - 320x240");
 $typeMap[5] = array("5", "FLV", "Low Quality - 400x226");
 $typeMap[6] = array("6", "FLV", "Medium Quality - 640x360");
 $typeMap[34] = array("34", "FLV", "Medium Quality - 640x360");
 $typeMap[35] = array("35", "FLV", "High Quality - 854x480");
 $typeMap[43] = array("43", "WEBM", "Low Quality - 640x360");
 $typeMap[44] = array("44", "WEBM", "Medium Quality - 854x480");
 $typeMap[45] = array("45", "WEBM", "High Quality - 1280x720");
 $typeMap[18] = array("18", "MP4", "Medium Quality - 480x360");
 $typeMap[22] = array("22", "MP4", "High Quality - 1280x720");
 $typeMap[37] = array("37", "MP4", "High Quality - 1920x1080");
 $typeMap[33] = array("38", "MP4", "High Quality - 4096x230");

 $videos = array();

 foreach($typeMap as $format => $meta) {
 if (isset($foundArray[$format])) {
 $videos[] = array('ext' => strtolower($meta[1]) , 'type' => $meta[2], 'url' => $foundArray[$format]);
 }
 }

 return $videos;

 }

}

<form method="post">

<input type="text" name="url" value="" style="width: 300px">

<input type="submit" value="Get Video Link">

</form>

Script by <a href="[http://www.ngcoders.com](http://www.ngcoders.com)">NGCoders</a>

<br />
<hr>
<br />

<?php

if(isset($_POST['url']))

 include('curl.php');
 include('youtube.php');

 $tube = new youtube();

 $links = $tube->get($_POST['url']);

 if($links) { ?>

 <b>Download Links ( Same IP Downloading only )</b> :
 <pre>
 <?php
 print_r($links);
 ?>
 </pre>

 <?php } else {

 echo $tube->error;

 }

}

?>