用php将任何格式视频转为flv

define("ROOT_DIR",dirname(__FILE__));    
class EcodeFlv {    
    var $fromFile;     //上传来的文件    
    var $toFilePath;    //保存文件路径    
    var $toPicPath;    //保存图片路径    
    var $mpeg; //ffmpeg.exe文件的路径    
    var $mencode; //mencode.exe文件的路径    
    var $cmdToFile; //转换文件命令    
    var $cmdToPic;    //转换图片命令    
    var $toFileName; //转换后的文件名    
    var $mpegComm; //ffmpeg.exe的转换命令    
    var $mencodeComm; //mencode.exe的命令    
    var $mpegType;    
    var $mencodeType;    
    var $midi; //mdi.exe的路径    
    var $cmdMidi; //mdi.exe的命令    
//初始化类    
    function EcodeFlv($fromFile,$toFilePath,$toPicPath,$mpeg,$mencode,$midi) {    
     $this->mpegComm &＃61; false;    
     $this->mencodeComm &＃61; false;    
     $this->fromFile &＃61; $fromFile;    
     $this->toFilePath &＃61; $toFilePath;    
     $this->toPicPath &＃61; ROOT_DIR."/".$toPicPath;    
     $this->mpeg &＃61; ROOT_DIR.$mpeg;    
     $this->mencode &＃61; ROOT_DIR.$mencode;    
     $this->midi &＃61; ROOT_DIR.$midi;    
     $this->mpegType&＃61;array (    
             "audio/x-mpeg"&＃61;>".mp3",    
             "video/mpeg"&＃61;>".mpeg",    
             "video/3gpp"&＃61;>".3gp",    
             "video/x-ms-asf"&＃61;>".asf",    
             "video/x-msvideo"&＃61;>".avi"    
     );    
     $this->mencodeType &＃61; array(    
             "application/vnd.rn-realmedia"&＃61;>".rm",    
             "audio/x-pn-realaudio"&＃61;>".rmvb",    
             "audio/x-ms-wmv"&＃61;>".wmv",    
     );    
    }    
    
//检查文件类型    
    
    function checkType() {    
        if(function_exists(mime_content_type)){    
         return false;    
        }else{    
         //$contentType &＃61; mime_content_type($this->fromFile);    
         $exe &＃61; "D:\server\php\extras\magic";    
         $handel &＃61; new finfo(FILEINFO_MIME, $exe);    
         $contentType &＃61;    $handel->file($this->fromFile);    
        }    
        foreach($this->mpegType as $index&＃61;>$key){    
         if($contentType &＃61;&＃61; $index){    
            $name &＃61; md5(date("Ymd").tiime());    
            $this->toFileName &＃61; $name;    
            $this->$mpegComm &＃61; true;    
            return true;    
         }    
        }    
        foreach($this->mencodeType as $index&＃61;>$key){    
            if($contentType &＃61;&＃61; $index){    
            $name &＃61; md5(date("Ymd").time());    
            $this->toFileName &＃61; $name;    
            $this->mencodeComm &＃61; true;    
            return true;    
                 }else{    
             return false;    
            }    
        }    
    }    
    
//设置文件&＃xff0c;图片大小    
    function setSize($flvSize,$picSize) {    
        $flvWidth &＃61; $flvSize[0];    
        $flvHeight &＃61; $flvSize[1];    
        $picWidth &＃61; $picSize[0];    
        $picHeight &＃61; $picSize[1];    
        $picName &＃61; $this->toPicPath.$this->toFileName.".jpg";    
        $flvName &＃61; $this->toFilePath.$this->toFileName.".flv";    
        $toMdi &＃61; ROOT_DIR."/".$flvName;    
        $size &＃61; $picWidth."x".$picHeight;    
        if($this->mpegComm){    
            $this->cmdToFile&＃61; "$this->mpeg -i $this->fromFile -y -ab 56 -ar 22050 -b 500 -r 15 -s $flvWith*$flvHeight $flvName";    
        }    
        elseif($this->mencodeComm){    
            $this->cmdToFile &＃61; "$this->mencode $this->fromFile    -vf scale&＃61;$flvWidth:$flvHeight -ffourcc FLV1 -of lavf -ovc lavc -lavcopts vcodec&＃61;flv:vbitrate&＃61;70:acodec&＃61;mp3:abitrate&＃61;56:dia&＃61;-1 -ofps 25 -srate 22050 -oac mp3lame -o $flvName";    
        }    
        $this->cmdToPic &＃61; "$this->mpeg -i $toMdi -y -f p_w_picpath2 -ss 8 -t 0.003 -s $size $picName";    
        $this->cmdMidi &＃61; "$this->midi $toMdi /k";    
        echo $this->cmdToPic;    
    }    
    
//开始转换    
    function toEcode() {    
        set_time_limit(0);    
        exec($this->cmdToFile,$flvStatus)    
        exec($this->cmdToPic,$picStatus);    
        exec($this->cmdMidi,$mStatus);    
    }    
    
}    
?>