php 调用ffmpeg获取视频信息的简单实现

&1');

/**

• 使用ffmpeg获取视频信息
• @param String $file 视频文件
• @return Array
  */
  function getVideoInfo($file){
  ob_start();
  passthru(sprintf(FFMPEG_CMD,$file));
  $video_info = ob_get_contents();
  ob_end_clean();

// 使用输出缓冲，获取ffmpeg所有输出内容
$ret = array();

// Duration: 00:33:42.64,start: 0.000000,bitrate: 152 kb/s
if (preg_match("/Duration: (.?),start: (.?),bitrate: (d) kb/s/",$video_info,$matches)){
$ret['duration'] = $matches[1]; // 视频长度
$duration = explode(':',$matches[1]);
$ret['seconds'] = $duration[0]3600 + $duration[1]*60 + $duration[2]; // 转为秒数
$ret['start'] = $matches[2]; // 开始时间
$ret['bitrate'] = $matches[3]; // bitrate 码率 单位kb
}

// Stream #0:1: Video: rv20 (RV20 / 0x30325652),yuv420p,352x288,117 kb/s,15 fps,15 tbr,1k tbn,1k tbc
if(preg_match("/Video: (.?),(.?),(.*?)[,s]/",$matches)){
$ret['vcodec'] = $matches[1]; // 编码格式
$ret['vformat'] = $matches[2]; // 视频格式
$ret['resolution'] = $matches[3]; // 分辨率
list($width,$height) = explode('x',$matches[3]);
$ret['width'] = $width;
$ret['height'] = $height;
}

// Stream #0:0: Audio: cook (cook / 0x6B6F6F63),22050 Hz,stereo,fltp,32 kb/s
if(preg_match("/Audio: (.),(d) Hz/",$matches)){
$ret['acodec'] = $matches[1]; // 音频编码
$ret['asamplerate'] = $matches[2]; // 音频采样频率
}

if(isset($ret['seconds']) && isset($ret['start'])){
$ret['play_time'] = $ret['seconds'] + $ret['start']; // 实际播放时间
}

$ret['size'] = filesize($file); // 视频文件大小
$video_info = iconv('gbk','utf8',$video_info);
return array($ret,$video_info);

}

// 输出视频信息
$video_info = getVideoInfo('myvideo.avi');
print_r($video_info[0]);
?>

00:33:42.64 [seconds] => 2022.64 [start] => 0.000000 [bitrate] => 152 [vcodec] => rv20 (RV20 / 0x30325652) [vformat] => yuv420p [resolution] => 352x288 [width] => 352 [height] => 288 [acodec] => cook (cook / 0x6B6F6F63) [asamplerate] => 22050 [play_time] => 2022.64 [size] => 38630744 )