php ffmgeg 操作视频

<?php
//https://www.ffmpeg.org/ffmpeg.html
/**
* 注:
* 1.其实php有相关ffmpeg-php 扩展的 不一定要命令去执行
* 2.有些视频没有转换 估计是文件名有空白
* 3.文件不是递归的 只做了2层
* 4.分割视频的时候是根据时间而不是根据文件的大小来分割
* 5.当你关闭了执行程序的浏览器时 其实程序还是在运行着的
**/
set_time_limit(0);
header("Content-type: text/html; charset=gbk");
define('FFMPEG_PATH', 'ffmpeg -i "%s" 2>&1');
function getVideoInfo($file) {
  
  $command = sprintf(FFMPEG_PATH, $file);
   
  ob_start();
  passthru($command);
  $info = ob_get_contents();
  ob_end_clean();
   
  $data = array();
  if (preg_match("/Duration: (.*?), start: (.*?), bitrate: (\d*) kb\/s/", $info, $match)) {
    $data['duration'] = $match[1]; //播放时间
    $arr_duration = explode(':', $match[1]);
    $data['seconds'] = $arr_duration[0] * 3600 + $arr_duration[1] * 60 + $arr_duration[2]; //转换播放时间为秒数
    $data['start'] = $match[2]; //开始时间
    $data['bitrate'] = $match[3]; //码率(kb)
  }
  if (preg_match("/Video: (.*?), (.*?), (.*?)[,\s]/", $info, $match)) {
    $data['vcodec'] = $match[1]; //视频编码格式
    $data['vformat'] = $match[2]; //视频格式
    $data['resolution'] = $match[3]; //视频分辨率
    $arr_resolution = explode('x', $match[3]);
    $data['width'] = $arr_resolution[0];
    $data['height'] = $arr_resolution[1];
  }
  if (preg_match("/Audio: (\w*), (\d*) Hz/", $info, $match)) {
    $data['acodec'] = $match[1]; //音频编码
    $data['asamplerate'] = $match[2]; //音频采样频率
  }
  if (isset($data['seconds']) && isset($data['start'])) {
    $data['play_time'] = $data['seconds'] + $data['start']; //实际播放时间
  }
  $data['size'] = filesize($file); //文件大小
  return $data;
}
//ffmpeg -i input.mp4 output.avi
$ffmpegCommand1 = 'ffmpeg -i %s %s';//视频转换
//ffmpeg -ss 00:00:00 -i input.mp4 -c copy -avoid_negative_ts 1 -t 60 output.mp4
$ffmpegCommand2 = 'ffmpeg -ss %s:%s:00 -i %s -c copy -avoid_negative_ts 1 -t %d %s';//视频分割
$root = './video';
$files = scandir($root);
$saveRoot = './handler';
foreach ($files as $k => $v) 
{
    if($v == '..' || $v == '.')
    {
        continue;
    }
    $tmp1 = $v;
    $dir = $root.'/'.$tmp1;
    if(is_dir($dir))
    {
        $savePath = $saveRoot.'/'.$tmp1;
        if(!file_exists($savePath))
        {
            mkdir($savePath);
        }
        $files2 = scandir($dir);
        foreach ($files2 as $key => $value) {
            if($value == '.' || $value == '..')
                continue;
            $tmp2 = $value;
            $dir2 = $dir.'/'.$tmp2;
            if(is_file($dir2))
            {
                $fileInfo = pathinfo($dir2);
                $filename = basename($dir2,'.'.$fileInfo['extension']);
            //    $filename = mb_substr($filename, 0,strripos($filename, '.')-1);
                $filePath = $savePath.'/'.$filename.'.mp4';
                if(file_exists($filePath))
                {
                    continue;
                }
                //echo $filePath;exit;
                $command = sprintf($ffmpegCommand1,$dir2,$filePath);

                //echo $command;
                if(system($command))
                {
                    echo '压缩失败';exit;
                }else
                {
                    echo $dir2."压缩成功<br />";
                    ob_flush();
                    flush();
                }
                
            }
        }
    }
    //echo "filename:" . $v  . "<br>";
}

//分割视频
$maxSize = 30 * 1024 * 1024;
$offset = 3 * 1024 * 1024;//允许偏移

$files = scandir($saveRoot);

foreach ($files as $k => $v) 
{
    if($v == '.' || $v == '..')
    {
        continue;
    }
    $tmp1 = $v;
    $dir = $saveRoot.'/'.$tmp1;
    if(is_dir($dir) )
    {
        $files2 = scandir($dir);
        foreach ($files2 as $key => $value) 
        {
            $times = 600;//截取十分钟
            $minute = $times/60;
            $divisionSavePath = '';//分割视频保存路径
            $tmp2 = $value;
            $dir2 = $dir.'/'.$tmp2;
            if(is_file($dir2))
            {
                //echo $dir2;
                $videoInfo = getVideoInfo($dir2);
                //print_r($videoInfo);exit;
                if($videoInfo['size'] > $maxSize + $offset)
                {
                    $timeLast = 0;//截取最后视频
                    $startMinute = 0;//分割开始分钟
                    $startHour = 0;//分割开始小时
                    $filename = basename($dir2,'.mp4');
                    $divisionSavePath = $dir.'/'.$filename;
                    //echo $divisionSavePath;exit;
                    if(!file_exists($divisionSavePath))
                    {
                        if(!mkdir($divisionSavePath))
                        {
                            echo '文件夹创建失败';exit;
                        }
                    }
                    
                    $seconds = $videoInfo['seconds'];
                    $count =  (int)($seconds/$times);
                    $last = $seconds%$times;
                    //末尾视频不到10分钟
                    if($last >0)
                    {
                        //大于20秒独立剪切一份
                        if($last > 180)
                        {
                            $timeLast = $last;
                            $count++;
                        }
                        else
                        {
                            $timeLast = $times + $last;
                        }
                        
                    }

                    for ($i=0; $i < $count; $i++) 
                    {
                        $num = $i+1;
                        if($num < 10)
                        {
                            $num = '0'.$num;
                        }
                        
                        //最后一次不够3分钟
                        if($num == $count)
                        {
                            $times = $timeLast;
                        }

                        if($startMinute < 10)
                        {
                            $startMinute = '0'.(int)$startMinute;
                        }
                        if($startMinute >= 60)
                        {
                            $startHour += 1;
                            $startMinute = 0;
                        }
                        if($startHour < 10)
                        {
                            $startHour = '0'.(int)$startHour;
                        }
                        
                        $divisionVideo = $divisionSavePath.'/'.$num.$filename.'.mp4';
                        if(file_exists($divisionVideo))
                        {
                            continue;
                        }
                        $command = sprintf($ffmpegCommand2,$startHour,$startMinute,$dir2,$times,$divisionVideo);
                        if(system($command))//失败返回非0
                        {
                            echo '转换失败';exit;
                        }
                        $startMinute += $minute;
                    }
                    

                    //ffmpeg -ss %s:%s:00 -i %s -c copy -avoid_negative_ts 1 -t %d %s
                    
                }
                //@unlink($dir2);
            }

        }
    }
}

exit;