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<?php // Conversion Class include 'config.class.php'; class YouTubeToMp3Converter extends Config { // Private Fields private $_songFileName = ''; private $_flvUrls = array(); private $_tempVidFileName; private $_uniqueID = ''; private $_vidSrcTypes = array('source_code', 'url'); private $_percentVidDownloaded = 0; #region Public Methods function __construct() { $this->_uniqueID = time() . "_" . uniqid('', true); } function DownloadVideo($youTubeUrl) { $file_contents = file_get_contents($youTubeUrl); if ($file_contents !== false) { $this->SetSongFileName($file_contents); $this->SetFlvUrls($file_contents); if ($this->GetSongFileName() != '' && count($this->GetFlvUrls()) > 0) { return $this->SaveVideo($this->GetFlvUrls()); } } return false; } function GenerateMP3($audioQuality) { $qualities = $this->GetAudioQualities(); $quality = (in_array($audioQuality, $qualities)) ? $audioQuality : $qualities[1]; $exec_string = parent::_FFMPEG.' -i '.$this->GetTempVidFileName().' -vol '.parent::_VOLUME.' -y -acodec libmp3lame -ab '.$quality.'k '.$this->GetSongFileName() . ' 2> logs/' . $this->_uniqueID . '.txt'; $ffmpegExecUrl = preg_replace('/(([^\/]+?)(\.php))$/', "exec_ffmpeg.php", "http://".$_SERVER['HTTP_HOST'].$_SERVER['PHP_SELF']); $postData = "cmd=".urlencode($exec_string); $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, $ffmpegExecUrl); curl_setopt($ch, CURLOPT_POST, TRUE); curl_setopt($ch, CURLOPT_POSTFIELDS, $postData); curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE); curl_setopt($ch, CURLOPT_TIMEOUT, 1); curl_exec($ch); curl_close($ch); } function DownloadMP3($file) { $filepath = parent::_SONGFILEDIR . urldecode($file); $filename = urldecode($file); if (parent::_ENABLE_CONCURRENCY_CONTROL) { $filename = preg_replace('/((_uuid-)(\w{13})(\.mp3))$/', "$4", $filename); } if (is_file($filepath)) { header('Content-Type: audio/mpeg3'); header('Content-Length: ' . filesize($filepath)); header('Content-Disposition: attachment; filename="'.$filename.'"'); ob_clean(); flush(); readfile($filepath); die(); } else { $redirect = explode("?", $_SERVER['REQUEST_URI']); header('Location: ' . $redirect[0]); } } function ExtractSongTrackName($vidSrc, $srcType) { $name = ''; $vidSrcTypes = $this->GetVidSrcTypes(); if (in_array($srcType, $vidSrcTypes)) { $vidSrc = ($srcType == $vidSrcTypes[1]) ? file_get_contents($vidSrc) : $vidSrc; if ($vidSrc !== false) { if (preg_match('/(<title>)(.+?)( - YouTube)(<\/title>)/', $vidSrc, $matches) == 1) { $name = trim($matches[2]); $name = iconv("UTF-8", "ISO-8859-1//TRANSLIT", $name); $name = (!empty($name)) ? html_entity_decode($name) : 'unknown_'.time(); } } } return $name; } function ExtractVideoId($youTubeUrl) { $v = ''; $urlQueryStr = parse_url(trim($youTubeUrl), PHP_URL_QUERY); if ($urlQueryStr !== false && !empty($urlQueryStr)) { parse_str($urlQueryStr); } return $v; } function UpdateVideoDownloadProgress($downloadSize, $downloaded, $uploadSize, $uploaded) { $percent = round($downloaded/$downloadSize, 2) * 100; if ($percent > $this->_percentVidDownloaded) { $this->_percentVidDownloaded++; echo '<script type="text/javascript">updateVideoDownloadProgress("'. $percent .'");</script>'; ob_end_flush(); ob_flush(); flush(); } } #endregion #region Private "Helper" Methods private function SaveVideo(array $urls) { $success = false; $vidCount = -1; while (!$success && ++$vidCount < count($urls)) { $this->_percentVidDownloaded = 0; $this->SetTempVidFileName(); $file = fopen($this->GetTempVidFileName(), 'w'); $ch = curl_init(); curl_setopt($ch, CURLOPT_FILE, $file); curl_setopt($ch, CURLOPT_HEADER, 0); curl_setopt($ch, CURLOPT_URL, $urls[$vidCount]); curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1); curl_setopt($ch, CURLOPT_NOPROGRESS, false); //curl_setopt($ch, CURLOPT_PROGRESSFUNCTION, array($this, 'UpdateVideoDownloadProgress')); curl_setopt($ch, CURLOPT_BUFFERSIZE, 4096000); curl_exec($ch); curl_close($ch); fclose($file); if (is_file($this->GetTempVidFileName())) { if (!filesize($this->GetTempVidFileName()) || filesize($this->GetTempVidFileName()) < 10000) { unlink($this->GetTempVidFileName()); } else { $success = true; } } } return $success; } #endregion #region Properties public function GetSongFileName() { return $this->_songFileName; } private function SetSongFileName($file_contents) { $vidSrcTypes = $this->GetVidSrcTypes(); $trackName = $this->ExtractSongTrackName($file_contents, $vidSrcTypes[0]); if (!empty($trackName)) { $fname = parent::_SONGFILEDIR . preg_replace('/_{2,}/','_',preg_replace('/ /','_',preg_replace('/[^A-Za-z0-9 _-]/','',$trackName))); $fname .= (parent::_ENABLE_CONCURRENCY_CONTROL) ? uniqid('_uuid-') : ''; $this->_songFileName = $fname . '.mp3'; } } public function GetFlvUrls() { return $this->_flvUrls; } private function SetFlvUrls($file_contents) { $vidUrls = array(); $vidSrcTypes = $this->GetVidSrcTypes(); if (preg_match('/(ytplayer\.config = )([^\r\n]+?)(;<\/script>)/', $file_contents, $matches) == 1) { $jsonObj = json_decode(trim($matches[2], ';')); if (isset($jsonObj->args->url_encoded_fmt_stream_map)) { $urls = urldecode(urldecode($jsonObj->args->url_encoded_fmt_stream_map)); //die($urls); if (preg_match('/^((.+?)(=))/', $urls, $matches) == 1) { $urlsArr = preg_split('/,'.preg_quote($matches[0], '/').'/', $urls, -1, PREG_SPLIT_NO_EMPTY); foreach ($urlsArr as $url) { if ($matches[0] != 'url=') { $url = ($url != $urlsArr[0]) ? $matches[0].$url : $url; $urlBase = preg_replace('/(.+?)(url=)(.+?)(\?)(.+)/', "$3$4", $url); $urlParams = preg_replace('/(.+?)(url=)(.+?)(\?)(.+)/', "$1$5", $url); $url = $urlBase . "&" . $urlParams; } else { $url = preg_replace('/^(url=)/', "", $url); } $url = preg_replace('/(.*)(itag=\d+&)(.*?)/', '$1$3', $url, 1); if (preg_match('/quality=small/',$url) != 1) { $url = preg_replace('/sig=/', "signature=", $url); $url = trim($url, ','); $url .= '&title=' . urlencode($this->ExtractSongTrackName($file_contents, $vidSrcTypes[0])); $url = preg_replace_callback('/(&type=)(.+?)(&)/', function($match){return $match[1].urlencode($match[2]).$match[3];}, $url); $vidUrls[] = $url; } } $vidUrls = array_reverse($vidUrls); //die(print_r($vidUrls)); } } } $this->_flvUrls = $vidUrls; } public function GetAudioQualities() { return $this->_audioQualities; } public function GetTempVidFileName() { return $this->_tempVidFileName; } private function SetTempVidFileName() { $this->_tempVidFileName = parent::_TEMPVIDDIR . $this->_uniqueID .'.flv'; } public function GetVidSrcTypes() { return $this->_vidSrcTypes; } public function GetUniqueID() { return $this->_uniqueID; } #endregion } ?>