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();
- ?>
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。