PHP调用ffmpeg对视频截图并拼接脚本

PHP 脚本调用ffmpeg对视频截图并拼接，供大家参考，具体内容如下

目前支持MKV，MPG，MP4等常见格式的视频，其他格式有待测试

12P 一张截图平均生成时间 1.64s 100个视频,大概需要2分半左右

9P 一张截图平均生成时间 1.13s 100个视频,大概需要2分钟左右

6P 一张截图平均生成时间 0.86s 100个视频,大概需要1分半左右

3P 一张截图平均生成时间 0.54s 100个视频,大概需要1分钟左右

<?php

define('DS', DIRECTORY_SEPARATOR);

date_default_timezone_set("Asia/Shanghai");

class FileLoader

{

  //路径变量

  private $rootdir    = '';

  private $tmp      = "tmp";      //tmp 目录

  private $source     = "mpg";      //source 目录

  private $destination  = "screenshoot";  //目标截图路径

  private $emptyImageName = "empty.jpg";   //合成的背景图

  //文件数组

  private $maxShoots   = 12;        //最大的截图数

  private $videoInfo   = NULL;

  private $files     = array();     //文件数

  private $fileArray   = array();

  private $extensionArray = array("mpg","mkv","mp4","avi","3gp","mov");  //支持的格式

  private $timeArray   = array("00:00:10","00:00:20","00:00:30","00:01:00","00:01:30","00:02:00","00:02:30","00:03:00","00:03:30","00:03:40","00:03:50","00:04:00");

  //统计变量

  private $timeStart   = 0;

  private $timeEnd    = 0;

  private $fileCount   = 0;

  private $successCount  = 0;

  private $failedCount  = 0;



  /**

  *  初始化信息

  */

   function __construct()

  {

    file_put_contents("log.txt","");

    $this->rootdir = dirname(__FILE__);

    $count = count($this->timeArray);



    for($i=1;$i<=$count;$i++)

    {

      $ii = $i-1;

      $this->fileArray[$ii] = $this->tmp.DS.$i.".jpg";

    }

  }



  /**

  *  当前时间，精确到小数点

  */

  private static function microtime_float()

  {

    list($usec, $sec)= explode(" ", microtime());

    return ((float)$usec + (float)$sec);

  }



  /**

  *  00:00:00 时间转秒

  */

  private static function timeToSec($time)

  {

     $p = explode(':',$time);

     $c = count($p);

     if ($c>1)

     {

        $hour  = intval($p[0]);

        $minute = intval($p[1]);

        $sec   = intval($p[2]);

     }

     else

     {

        throw new Exception('error time format');

     }

     $secs = $hour * 3600 + $minute * 60 + $sec;

     return $secs;

  }



  /**

  *  00:00:00 时间转秒

  */

  private static function secToTime($time)

  {



    $hour = floor($time/3600);

    $min = floor(($time - $hour * 3600)/60);

    $sec = $time % 60;

    $timeStr = sprintf("%02d:%02d:%02d",$hour,$min,$sec);

    return $timeStr;

  }



  /**

  *  获取全部文件

  */

   private function getFiles($dir)

  {

    $files = array();

    $dir = rtrim($dir, "/\\") . DS;

    $dh = opendir($dir);

    if ($dh == false) { return $files; }



    while (($file = readdir($dh)) != false)

    {

      if ($file{0} == '.') { continue; }



      $path = $dir . $file;

      if (is_dir($path))

      {

        $files = array_merge($files, $this->getFiles($path));

      }

      elseif (is_file($path))

      {

        $files[] = $path;

      }

    }

    closedir($dh);

    return $files;

  }



  /**

  *  搜索路径

  */

  public function searchDir($sourcePath = NULL)

  {



    $this->timeStart = $this->microtime_float();



    if ($sourcePath)

    {

      $this->rootdir = $sourcePath;

    }



    if (file_exists($this->rootdir) && is_dir($this->rootdir))

    {

      $this->files = $this->getFiles($this->rootdir.DS.$this->source);

    }



    $this->fileCount = count($this->files);



    foreach ($this->files as $path)

    {

      $fi = pathinfo($path);

      $flag = array_search(strtolower($fi['extension']),$this->extensionArray);

      if (!$flag) continue;

      $this->getScreenShoot(basename($path));

    }



    $this->timeEnd = $this->microtime_float();

    $time = $this->timeEnd - $this->timeStart;



    if($this->fileCount > 0)

    {

      $str = sprintf("[TOTAL]: Cost Time:%8s | Total File:[%d] | Successed:[%d] | Failed:[%d] | Speed:%.2fs per file\n",$this->secToTime($time),$this->fileCount,$this->successCount,$this->failedCount,$time/$this->fileCount);

      file_put_contents("log.txt",$str,FILE_APPEND);

    }

    else

    {

      $str = sprintf("[TOTAL]: Cost Time:%8s | Total File:[%d] | Successed:[%d] | Failed:[%d] | Speed:%.2fs per file\n",$this->secToTime($time),$this->fileCount,$this->successCount,$this->failedCount,0);

      file_put_contents("log.txt",$str,FILE_APPEND);

    }



  }



  /**

  *  获取视频信息

  */

  private function getVideoInfo($file){

      $re = array();

      exec(".".DS."ffmpeg -i {$file} 2>&1", $re);

      $info = implode("\n", $re);



      if(preg_match("/No such file or directory/i", $info))

      {

        return false;

      }



      if(preg_match("/Invalid data/i", $info)){

        return false;

      }



      $match = array();

      preg_match("/\d{2,}x\d+/", $info, $match);

      list($width, $height) = explode("x", $match[0]);



      $match = array();

      preg_match("/Duration:(.*?),/", $info, $match);

      if($match)

      {

        $duration = date("H:i:s", strtotime($match[1]));

      }else

      {

        $duration = NULL;

      }



      $match = array();

      preg_match("/bitrate:(.*kb\/s)/", $info, $match);

      $bitrate = $match[1];



      if(!$width && !$height && !$duration && !$bitrate){

        return false;

      }else{

        return array(

          "file" => $file,

          "width" => $width,

          "height" => $height,

          "duration" => $duration,

          "bitrate" => $bitrate,

          "secends" => $this->timeToSec($duration)

        );

      }

    }







  /**

  *  设置截图时间

  */

  private function setShootSecends($secends,$useDefault = NO)

  {



    if($useDefault)

    {

      if($secends<18)

      {

        $time = 1;

      }else

      {

        $time = 5;

      }



      $range = floor(($secends - $time)/ ($this->maxShoots));

      if ($range < 1)

      {

        $range = 1;

      }



      $this->timeArray = array();

      for($i=0;$i<$this->maxShoots;$i++)

      {

        $this->timeArray[$i] = $this->secToTime($time);

        $time = $time + $range;

        if ($time > $secends) break;

      }

    }

  }



  /**

  *  拼接图片

  */

  private function getFixedPhoto($fileName)

  {



    $target = $this->rootdir.DS.$this->emptyImageName;//背景图片

    $target_img = Imagecreatefromjpeg($target);

    $source= array();



    foreach ($this->fileArray as $k=>$v)

    {

      $source[$k]['source'] = Imagecreatefromjpeg($v);

      $source[$k]['size'] = getimagesize($v);

    }



    $tmpx=5;

    $tmpy=5;//图片之间的间距

    for ($i=0; $i< count($this->timeArray); $i++)

    {

      imagecopy($target_img,$source[$i]['source'],$tmpx,$tmpy,0,0,$source[$i]['size'][0],$source[$i]['size'][1]);

      $target_img = $this->setTimeLabel($target_img,$tmpx,$tmpy,$source[$i]['size'][0],$source[$i]['size'][1],$this->timeArray[$i]);

      $tmpx = $tmpx+ $source[$i]['size'][0];

      $tmpx = $tmpx+5;

      if(($i+1) %3 == 0){

        $tmpy = $tmpy+$source[$i]['size'][1];

        $tmpy = $tmpy+5;

        $tmpx=5;

      }

    }



    $target_img = $this->setVideoInfoLabel($target_img,$tmpx,$tmpy,$this->videoInfo);

    Imagejpeg($target_img,$this->rootdir.DS.$this->destination.DS.$fileName.'.jpg');

  }



  /**

  *  设置时间刻度标签

  */

  private function setTimeLabel($image,$image_x,$image_y,$image_w,$image_h,$img_text)

  {

     imagealphablending($image,true);

     //设定颜色

     $color=imagecolorallocate($image,255,255,255);

     $ttf_im=imagettfbbox(30 ,0,"Arial.ttf",$this->img_text);

     $w = $ttf_im[2] - $ttf_im[6];

     $h = $ttf_im[3] - $ttf_im[7];

     unset($ttf_im);



     $txt_y   =$image_y+$image_h+$h-5;

     $txt_x   =$image_x+$w+5;



     imagettftext($image,30,0,$txt_x,$txt_y,$color,"Arial.ttf",$img_text);

     return $image;

   }



  /**

  *  设置视频信息标签

  */

   private function setVideoInfoLabel($image,$txt_x,$txt_y,$videoInfo)

   {

     imagealphablending($image,true);



     $color=imagecolorallocate($image,0,0,0);



     imagettftext($image,32,0,100,2000+30,$color,"FZLTHJW.ttf","FileName:".basename($videoInfo["file"]));

     imagettftext($image,32,0,1600,2000+30,$color,"Arial.ttf","Size:".$videoInfo["width"]."x".$videoInfo["height"]);

     imagettftext($image,32,0,100,2000+120,$color,"Arial.ttf","Duration:".$videoInfo["duration"]);

     imagettftext($image,32,0,1600,2000+120,$color,"Arial.ttf","Bitrate:".$videoInfo["bitrate"]);

     return $image;

  }



  /**

  *  屏幕截图

  */

  public function getScreenShoot($fileName)

  {

    $fi = pathinfo($fileName);

    $this->videoInfo = $this->getVideoInfo($this->rootdir.DS.$this->source.DS.$fileName);

    if($this->videoInfo)

    {

      $this->setShootSecends($this->videoInfo["secends"]);



      for ($i=0; $i< count($this->timeArray); $i++ )

      {

        $cmd=".".DS."ffmpeg -ss ". $this->timeArray[$i] ." -i ". $this->rootdir.DS.$this->source.DS.$fileName ." -y -f image2 -s 720*480 -vframes 1 ".$this->rootdir.DS.$this->fileArray[$i];

        exec($cmd,$out,$status);

      }

      $this->getFixedPhoto($fileName);



      $str = sprintf("[%s]:OK...........[%s][%2dP]%-30s\n",date("y-m-d h:i:s",time()),$this->videoInfo["duration"],count($this->timeArray),$fileName);

      file_put_contents("log.txt",$str,FILE_APPEND);

      $this->successCount += 1;

    }else

    {

      $str = sprintf("[%s]:FAILED.................................[%s][%2dP]%-30s\n",date("y-m-d h:i:s",time()),$this->videoInfo["duration"],count($this->timeArray),$fileName);

      file_put_contents("log.txt",$str,FILE_APPEND);

      $this->failedCount += 1;

    }

  }



  /**

  *  TODO:

  *  截取图片,

  *  需要配置ffmpeg-php，比较麻烦，

  *  但是这个类确实挺好用的。

  */

  public function getScreenShoot2($fileName)

  {

    if(extension_loaded('ffmpeg')){//判断ffmpeg是否载入

      $mov = new ffmpeg_movie($this->rootdir.DS.$this->source.DS.$fileName);//视频的路径

      $count = $mov->getFrameCount();

      $ff_frame = $mov->getFrame(floor($count/2));

      if($ff_frame)

      {

        $gd_image = $ff_frame->toGDImage();

        $img=$this->rootdir.DS."test.jpg";//要生成图片的绝对路径

        imagejpeg($gd_image, $img);//创建jpg图像

        imagedestroy($gd_image);//销毁一图像

      }

    }else{

      echo "ffmpeg没有载入";

    }

  }

}



$fileLoader = new FileLoader();

$fileLoader->searchDir();

?>