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,以下是一个参考类,平台使用windows,代码如下:
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define("ROOT_DIR",dirname(__FILE__));
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class EcodeFlv {
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var $fromFile;
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var $toFilePath;
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var $toPicPath;
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var $mpeg;
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var $mencode;
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var $cmdToFile;
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var $cmdToPic;
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var $toFileName;
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var $mpegComm;
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var $mencodeComm;
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var $mpegType;
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var $mencodeType;
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var $midi;
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var $cmdMidi;
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function EcodeFlv($fromFile,$toFilePath,$toPicPath,$mpeg,$mencode,$midi) {
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$this->mpegComm = false;
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$this->mencodeComm = false;
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$this->fromFile = $fromFile;
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$this->toFilePath = $toFilePath;
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$this->toPicPath = ROOT_DIR."/".$toPicPath;
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$this->mpeg = ROOT_DIR.$mpeg;
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$this->mencode = ROOT_DIR.$mencode;
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$this->midi = ROOT_DIR.$midi;
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$this->mpegType=array (
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"audio/x-mpeg"=>".mp3",
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"video/mpeg"=>".mpeg",
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"video/3gpp"=>".3gp",
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"video/x-ms-asf"=>".asf",
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"video/x-msvideo"=>".avi"
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);
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$this->mencodeType = array(
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"application/vnd.rn-realmedia"=>".rm",
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"audio/x-pn-realaudio"=>".rmvb",
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"audio/x-ms-wmv"=>".wmv",
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);
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}
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function checkType() {
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if(function_exists(mime_content_type)){
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return false;
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}else{
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$exe = "D:serverphpextrasmagic";
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$handel = new finfo(FILEINFO_MIME, $exe);
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$contentType = $handel->file($this->fromFile);
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}
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foreach($this->mpegType as $index=>$key){
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if($contentType == $index){
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$name = md5(date("Ymd").tiime());
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$this->toFileName = $name;
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$this->$mpegComm = true;
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return true;
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}
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}
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foreach($this->mencodeType as $index=>$key){
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if($contentType == $index){
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$name = md5(date("Ymd").time());
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$this->toFileName = $name;
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$this->mencodeComm = true;
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return true;
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}else{
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return false;
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}
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}
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}
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function setSize($flvSize,$picSize) {
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$flvWidth = $flvSize[0];
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$flvHeight = $flvSize[1];
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$picWidth = $picSize[0];
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$picHeight = $picSize[1];
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$picName = $this->toPicPath.$this->toFileName.".jpg";
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$flvName = $this->toFilePath.$this->toFileName.".flv";
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$toMdi = ROOT_DIR."/".$flvName;
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$size = $picWidth."x".$picHeight;
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if($this->mpegComm){
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$this->cmdToFile= "$this->mpeg -i $this->fromFile -y -ab 56 -ar 22050 -b 500 -r 15 -s $flvWith*$flvHeight $flvName";
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}
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elseif($this->mencodeComm){
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$this->cmdToFile = "$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 $flvName";
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}
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$this->cmdToPic = "$this->mpeg -i $toMdi -y -f image2 -ss 8 -t 0.003 -s $size $picName";
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$this->cmdMidi = "$this->midi $toMdi /k";
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echo $this->cmdToPic;
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}
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function toEcode() {
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set_time_limit(0);
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exec($this->cmdToFile,$flvStatus)
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exec($this->cmdToPic,$picStatus);
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exec($this->cmdMidi,$mStatus);
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}
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}
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