PHP脚本调用ffmpeg对视频截图并拼接

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();
?>

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