Code to download youtube videos

Here is the code i created to download youtube videos.

/**
 * Page Scrapper
 * @returns string
 */
function curl_content($url){
   $useragent = 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; SLCC1; .NET CLR 2.0.50727; .NET CLR 3.0.04506; .NET CLR 1.1.4322; InfoPath.2; .NET CLR 3.5.21022)';
   $ch = curl_init();
   curl_setopt($ch, CURLOPT_USERAGENT, $useragent);
   curl_setopt($ch, CURLOPT_URL, $url);
   curl_setopt($ch, CURLOPT_HEADER, 0);
   ob_start();
   curl_exec($ch);
   curl_close($ch);
   $string = ob_get_contents();
   ob_end_clean();        
   return $string;    
}
 
 
/**
* Youtube Video download
* Available Known ITAG's:
* ----------------------------------------------
* itag=5 ( Very Low Definition FLV )
* itag=17 ( Very Low Definition 3GP )
* itag=18 ( Low Definition MP4 )
* itag=22 ( High Definition MP4 )
* itag=34 ( Low Definition FLV )
* itag=35 ( Standard Definition FLV )
* itag=36 ( Low Definition 3GP )
* itag=37 ( Full High Definition MP4 )
* itag=38 ( Ultra High Definition MP4 )
* itag=43 ( Low Definition WebM )
* itag=44 ( Standard Definition WebM )
* itag=45 ( High Definition WebM )
* itag=46 ( Full High Definition WebM )
* itag=82 ( Low Definition 3D MP4 )
* itag=83 ( Standard Definition 3D MP4 )
* itag=84 ( High Definition 3D MP4 )
* itag=85 ( Full High Definition 3D MP4)
* itag=100 ( Low Definition 3D WebM )
* itag=101 ( Standard Definition 3D WebM )
* itag=102 ( High Definition 3D WebM )
* -----------------------------------------------
*/   
function youtube_video($url){
 
    $_locale = 'US';
    $pref = 'mp4';
    $qual = 'medium';
   
    // Curl Get Page
    $data = curl_content($url);
 
   
  $ftmd = array(
      '5' => 'Very Low Definition FLV',
      '17' => 'Very Low Definition 3GP',
      '18' => 'Low Definition MP4',
      '22' => 'High Definition MP4',
      '34' => 'Low Definition FLV',
      '35' => 'Standard Definition FLV',
      '36' => 'Low Definition 3GP',
      '37' => 'Full High Definition MP4',
      '38' => 'Ultra High Definition MP4',
      '43' => 'Low Definition WebM',
      '44' => 'Standard Definition WebM',
      '45' => 'High Definition WebM',
      '46' => 'Full High Definition WebM',
      '82' => 'Low Definition 3D MP4',
      '83' => 'Standard Definition 3D MP4',
      '84' => 'High Definition 3D MP4',
      '85' => 'Full High Definition 3D MP4',
      '100' => 'Low Definition 3D WebM',
      '101' => 'Standard Definition 3D WebM',
      '102' => 'High Definition 3D WebM'
  );   
   
 
    // If Valid Link Data Found
    if(preg_match('/(fmt_stream_map=)(.*?)(")/i',$data,$matches)){ 
    // Core Data
    $link = $matches[2]; 
  }else{
    if(preg_match('/(fmt_stream_map"\: ")(.*?)(")/i',$data,$matches)){
      // Core Data
      $link = $matches[2];
    }
  }
  if($link != ''){ 
 
    // Split Link Entires
    if(strpos($link,',') !== false){
      $split = explode(',',$link);
    }else{
      $split = explode('%2C',$link);
    }   
    // Define Arrays
    $mp4_links = array();
    $flv_links = array();
    $ukn_links = array();
   
    // Loop Link Entries
    foreach($split as $vlink){
 
      // Clear Values
      $_url = '';
      $_sig = '';
      $_type = '';
      $_quality = '';
      $_itag = '';
 
     
      // Split into Parts
      if(strpos($vlink,',') !== false){
        $part = explode(',',$vlink);
      }else{
        $vlink = urldecode($vlink);
        $part = explode('&',$vlink);
      }
     
      // Loop Parts
      foreach($part as $vpart){
   
        // Key => Value Pair   
        $arr = explode('=',$vpart);
     
        // Get all the parts
        if($arr[0] == 'url'){
          $_url = trim($arr[1]);
        }
        if($arr[0] == 'sig'){
          $_sig = trim($arr[1]);
        }
        if($arr[0] == 'type'){
          $_type = trim($arr[1]);
        }
        if($arr[0] == 'quality'){
          $_quality = trim($arr[1]);
        }
        if($arr[0] == 'itag'){
          $_itag = trim($arr[1]);
        }
       
      }   
           
      $entry = $_url.'&signature='.$_sig;
      $link = urldecode($entry);
     
      /*
      echo "_url = ".$_url."<br/>";
      echo "_sig = ".$_sig."<br/>";
      echo "_type = ".$_type."<br/>";
      echo "_quality = ".$_quality."<br/>";
      echo "_itag = ".$_itag."<br/>";
      echo "Final URL = ".$link."<br/><br/>";
      */
                               
      // Group videos by extension
      if($_itag == '85' || $_itag == '84' || $_itag == '83' || $_itag == '82' || $_itag == '38' || $_itag == '37' || $_itag == '22' || $_itag == '18'){
        $mp4_links[] = $link;
        $mp4_itags[] = $_itag;
        $all[$_itag] = $link;
      }elseif($_itag == '35' || $_itag == '34' || $_itag == '5'){
        $flv_links[] = $link;
        $flv_itags[] = $_itag;
        $all[$_itag] = $link;
      }elseif($_itag == '102' || $_itag == '101' || $_itag == '100' || $_itag == '46' || $_itag == '45' || $_itag == '44' || $_itag == '43'){
        $webm_links[] = $link;
        $webm_itags[] = $_itag;
        $all[$_itag] = $link;
      }elseif($_itag == '17'){
        $gp_links[] = $link;
        $gp_itags[] = $_itag;
        $all[$_itag] = $link;
      }else{
        $ukn_links[] = $link;
        $ukn_itags[] = $_itag;
      } 
                   
    }// <<-- End Foreach Loop
 
    // Find a Preferred Video   
    if($pref == 'mp4' && $qual == 'high'){
      $data = $mp4_links[0];
    }elseif($pref == 'mp4' && $qual == 'medium'){
      $data = (isset($mp4_links[1])) ? $mp4_links[1] : $mp4_links[0];
    }elseif($pref == 'mp4' && $qual == 'low'){
      $data = end($mp4_links);
    }elseif($pref == 'flv' && $qual == 'high' || ($data == '')){
      $data = $flv_links[0];
    }elseif($pref == 'flv' && $qual == 'medium'){
      $data = (isset($flv_links[1])) ? $flv_links[1] : $flv_links[0];
    }elseif($pref == 'flv' && $qual == 'low'){
      $data = end($flv_links);
    }
 
    if(strlen($data)<125){
      $data = $flv_links[0];
    }
   
    // Assign Simple
    $flv_url = $data;
 
    // Output some data
    $arr['flvs'] = $flv_links;
    $arr['flvt'] = $flv_itags;
    $arr['mp4s'] = $mp4_links;
    $arr['mp4t'] = $mp4_itags; 
    $arr['webms'] = $webm_links;
    $arr['webmt'] = $webm_itags;
    $arr['gps'] = $gp_links;
    $arr['gpt'] = $gp_itags;
    $arr['ukns'] = $ukn_links;
    $arr['uknt'] = $ukn_itags;
    $arr['cdebug'] = $cdebug;
    $arr['link'] = $flv_url;
    $arr['ext'] = $pref;
    $arr['all'] = $all;
 
    return $arr;
       
    }else{
    if(eregi('verify-age-details',$data)){
      //echo 'Age verification needed<br>';
    }
    return(false);
    }
}       
 
$data = youtube_video('https://www.youtube.com/watch?v=bAsA00-5KoI');
 
// You now have available many formats to choose from.
// You can see how to edit the code to be able to pass in desired quality, this is just to get started.
$download_link = $data['mp4s'][0];
 
 

PHP:

 

Thanks for sharing - I'll give it a try!

 

Here is a way to list all available formats for download in one shot.

$ftmd = array(
    '5' => 'Very Low Definition FLV',
    '17' => 'Very Low Definition 3GP',
    '18' => 'Low Definition MP4',
    '22' => 'High Definition MP4',
    '34' => 'Low Definition FLV',
    '35' => 'Standard Definition FLV',
    '36' => 'Low Definition 3GP',
    '37' => 'Full High Definition MP4',
    '38' => 'Ultra High Definition MP4',
    '43' => 'Low Definition WebM',
    '44' => 'Standard Definition WebM',
    '45' => 'High Definition WebM',
    '46' => 'Full High Definition WebM',
    '82' => 'Low Definition 3D MP4',
    '83' => 'Standard Definition 3D MP4',
    '84' => 'High Definition 3D MP4',
    '85' => 'Full High Definition 3D MP4',
    '100' => 'Low Definition 3D WebM',
    '101' => 'Standard Definition 3D WebM',
    '102' => 'High Definition 3D WebM'
); 
foreach($data['all'] as $itag => $link){
  $alink = "<a href='".$link."'>".$ftmd[$itag]."</a>";
  echo $alink."<br/>";
}

PHP:

 

Would you be able to paste the whole code here if you don't mind.

Thank you

 

Its not really for downloading to local pc, unless you arre running it from a local webserver, but its more for a server to server download script for any website.

 

Only none VEVO videos can be downloaded. Vevo videos use some sort of encryption