PHP如何取得影片總時長與碼率等訊息

<?php
define(&#39;FFMPEG_PATH&#39;, &#39;/usr/local/ffmpeg2/bin/ffmpeg -i "%s" 2>&1&#39;);
 
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[&#39;duration&#39;] = $match[1]; //播放时间
    $arr_duration = explode(&#39;:&#39;, $match[1]);
    $data[&#39;seconds&#39;] = $arr_duration[0] * 3600 + $arr_duration[1] * 60 + $arr_duration[2]; //转换播放时间为秒数
    $data[&#39;start&#39;] = $match[2]; //开始时间
    $data[&#39;bitrate&#39;] = $match[3]; //码率(kb)
  }
  if (preg_match("/Video: (.*?), (.*?), (.*?)[,\s]/", $info, $match)) {
    $data[&#39;vcodec&#39;] = $match[1]; //视频编码格式
    $data[&#39;vformat&#39;] = $match[2]; //视频格式
    $data[&#39;resolution&#39;] = $match[3]; //视频分辨率
    $arr_resolution = explode(&#39;x&#39;, $match[3]);
    $data[&#39;width&#39;] = $arr_resolution[0];
    $data[&#39;height&#39;] = $arr_resolution[1];
  }
  if (preg_match("/Audio: (\w*), (\d*) Hz/", $info, $match)) {
    $data[&#39;acodec&#39;] = $match[1]; //音频编码
    $data[&#39;asamplerate&#39;] = $match[2]; //音频采样频率
  }
  if (isset($data[&#39;seconds&#39;]) && isset($data[&#39;start&#39;])) {
    $data[&#39;play_time&#39;] = $data[&#39;seconds&#39;] + $data[&#39;start&#39;]; //实际播放时间
  }
  $data[&#39;size&#39;] = filesize($file); //文件大小
  return $data;
}
 
//用法
$video_info = getVideoInfo(&#39;video.mp4&#39;);
print_r($video_info);
?>