PHP如何獲取視頻總時長與碼率等信息

利用PHP中的FFmpeg讀取視頻播放時長與碼率等信息

  

function getVideoInfo($file) {

   define('FFMPEG_PATH', '/usr/local/ffmpeg2/bin/ffmpeg -i "%s" 2>&1');

  $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]; //播放時間

    $arr_duration = explode(':', $match[1]);

    $data['seconds'] = $arr_duration[0] * 3600 + $arr_duration[1] * 60 + $arr_duration[2]; //轉換播放時間為秒數

    $data['start'] = $match[2]; //開始時間

    $data['bitrate'] = $match[3]; //碼率(kb)

  }

  if (preg_match("/Video: (.*?), (.*?), (.*?)[,\s]/", $info, $match)) {

    $data['vcodec'] = $match[1]; //視頻編碼格式

    $data['vformat'] = $match[2]; //視頻格式

    $data['resolution'] = $match[3]; //視頻分辨率

    $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]; //音頻編碼

    $data['asamplerate'] = $match[2]; //音頻采樣頻率

  }

  if (isset($data['seconds']) && isset($data['start'])) {

    $data['play_time'] = $data['seconds'] + $data['start']; //實際播放時間

  }

  $data['size'] = filesize($file); //文件大小

  return $data;

}

  

//用法

$video_info = getVideoInfo('video.mp4');

print_r($video_info);