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

<div class="jb51code">
<pre class="brush:PHP;">
<?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) 
{ 
  $str = sprintf("[TOTAL]: Cost Time:%8s | Total File:[%d] | Successed:[%d] | <a href="https://www.jb51.cc/tag/Failed/" target="_blank" class="keywords">Failed</a>:[%d] | Speed:%.2fs per file\n",$this->secToTime($time),$this->fileCount,$this->successCount,$this-><a href="https://www.jb51.cc/tag/Failed/" target="_blank" class="keywords">Failed</a>Count,$time/$this->fileCount); 
  file_put_contents("log.txt",$str,FILE_APPEND);  
} 
else 
{ 
  $str = sprintf("[TOTAL]: Cost Time:%8s | Total File:[%d] | Successed:[%d] | <a href="https://www.jb51.cc/tag/Failed/" target="_blank" class="keywords">Failed</a>:[%d] | Speed:%.2fs per file\n",0); 
  file_put_contents("log.txt",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]);

  $match = array();
  preg_match("/Duration:(.*?),/",$match);
  if($match)
  {
  $duration = date("H:i:s",strtotime($match[1]));
  }else
  {
  $duration = NULL;
  }

  $match = array();
  preg_match("/bitrate:(.*kb\/s)/",$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<a href="https://www.jb51.cc/tag/tupian/" target="_blank" class="keywords">图片</a> 
$target_img = Imagecreatefromjpeg($target); 
$source= array(); 

foreach ($this->fileArray as $k=>$v) 
{ 
  $source[$k]['source'] = Imagecreatefromjpeg($v); 
  $source[$k]['size'] = ge<a href="https://www.jb51.cc/tag/timage/" target="_blank" class="keywords">timage</a>size($v); 
} 

$tmpx=5; 
$tmpy=5;//<a href="https://www.jb51.cc/tag/tupian/" target="_blank" class="keywords">图片</a>之<a href="https://www.jb51.cc/tag/jiande/" target="_blank" class="keywords">间的</a>间距 
for ($i=0; $i< count($this->timeArray); $i++) 
{   
  image<a href="https://www.jb51.cc/tag/cop/" target="_blank" class="keywords">cop</a>y($target_img,$source[$i]['source'],$tmpx,$tmpy,$source[$i]['size'][0],$source[$i]['size'][1]); 
  $target_img = $this->setTimeLabel($target_img,$source[$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,$this->videoInfo); 
Imagejpeg($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);
  $ttf_im=imagettfbBox(30,"Arial.ttf",$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($image,30,$txt_x,$txt_y,$color,$img_text);
  return $image;
  }

/**

• 设置视频信息标签
  */
  private function setVideoInfoLabel($image,$videoInfo)
  {
  imagealphablending($image,true);

  $color=imagecolorallocate($image,0);

  imagettftext($image,32,100,2000+30,"FZLTHJW.ttf","FileName:".basename($videoInfo["file"]));
  imagettftext($image,1600,"Size:".$videoInfo["width"]."x".$videoInfo["height"]);
  imagettftext($image,2000+120,"Duration:".$videoInfo["duration"]);
  imagettftext($image,"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",FILE_APPEND);
  $this->successCount += 1;
  }else
  {
  $str = sprintf("[%s]:Failed.................................[%s][%2dP]%-30s\n",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();
?>