ffmpeg-php将视频格式转为flv格式实现代码

本文章介绍了一个插件利用ffmpeg-php将视频格式转为flv格式，这样很多格式的视频我们都可以利用这个插件来实现格式转换哦。

以下是一个参考类，平台使用windows。

代码如下

复制代码

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程序文件的路径 var $mencode; //mencode程序文件的路径 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 = false; $this->mencodeComm = false; $this->fromFile = $fromFile; $this->toFilePath = $toFilePath; $this->toPicPath = ROOT_DIR."/".$toPicPath; $this->mpeg = ROOT_DIR.$mpeg; $this->mencode = ROOT_DIR.$mencode; $this->midi = ROOT_DIR.$midi; $this->mpegType=array ( "audio/x-mpeg"=>".mp3", "video/mpeg"=>".mpeg", "video/3gpp"=>".3gp", "video/x-ms-asf"=>".asf", "video/x-msvideo"=>".avi" ); $this->mencodeType = array( "application/vnd.rn-realmedia"=>".rm", "audio/x-pn-realaudio"=>".rmvb", "audio/x-ms-wmv"=>".wmv", ); } //检查文件类型 function checkType() { if(function_exists(mime_content_type)){ return false; }else{ //$contentType = mime_content_type($this->fromFile); $exe = "D:serverphpextrasmagic"; $handel = new finfo(FILEINFO_MIME, $exe); $contentType =  $handel->file($this->fromFile); } foreach($this->mpegType as $index=>$key){ if($contentType == $index){ $name = md5(date("Ymd").tiime()); $this->toFileName = $name; $this->$mpegComm = true; return true; } } foreach($this->mencodeType as $index=>$key){ if($contentType == $index){ $name = md5(date("Ymd").time()); $this->toFileName = $name; $this->mencodeComm = true; return true; }else{ return false; } } } //设置文件，图片大小">图片大小 function setSize($flvSize,$picSize) { $flvWidth = $flvSize[0]; $flvHeight = $flvSize[1]; $picWidth = $picSize[0]; $picHeight = $picSize[1]; $picName = $this->toPicPath.$this->toFileName.".jpg"; $flvName = $this->toFilePath.$this->toFileName.".flv"; $toMdi = ROOT_DIR."/".$flvName; $size = $picWidth."x".$picHeight; if($this->mpegComm){ $this->cmdToFile= "$this->mpeg -i $this->fromFile -y -ab 56 -ar 22050 -b 500 -r 15 -s $flvWith*$flvHeight $flvName"; } elseif($this->mencodeComm){ $this->cmdToFile = "$this->mencode $this->fromFile  -vf scale=$flvWidth:$flvHeight -ffourcc FLV1 -of lavf -ovc lavc -lavcopts vcodec=flv:vbitrate=70:acodec=mp3:abitrate=56:dia=-1 -ofps 25 -srate 22050 -oac mp3lame -o $flvName"; } $this->cmdToPic = "$this->mpeg -i $toMdi -y -f image2 -ss 8 -t 0.003 -s $size $picName"; $this->cmdMidi = "$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); } }