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php如何控制视频播放时长

php如何控制视频播放时长,小编今天告诉你,快来学习一下吧!
方法/步骤
1

代码如下:PHP&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; } //用法 $video_info = getVideoInfo('video.mp4'); print_r($video_info); ?>

2

FFmpeg获得视频文件的缩略图:function getVideoCover($file,$time,$name) {   if(empty($time))$time = '1';//默认截取第一秒第一帧   $strlen = strlen($file);   // $videoCover = substr($file,0,$strlen-4);   // $videoCoverName = $videoCover.'.jpg';//缩略图命名   //exec('ffmpeg -i '.$file.' -y -f mjpeg -ss '.$time.' -t 0.001 -s 320x240 '.$name.'',$out,$status);   $str = 'ffmpeg -i '.$file.' -y -f mjpeg -ss 3 -t '.$time.' -s 320x240 '.$name;   //echo $str.'
';   $result = system($str);

3

Fmpeg读取视频播放时长和码率、&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 $data;}  //用法$video_info = getVideoInfo('video.mp4');print_r($video_info);?>

4

Fmpeg获得视频文件的总长度时间和创建时间function getTime($file){   $vtime = exec('ffmpeg -i '.$file.' 2>&1 | grep 'Duration' | cut -d ' ' -f 4 | sed s/,//');//总长度   $ctime = date('Y-m-d H:i:s',filectime($file));//创建时间   //$duration = explode(':',$time);   // $duration_in_seconds = $duration[0]*3600 + $duration[1]*60+ round($duration[2]);//转化为秒   return array('vtime'=>$vtime,   'ctime'=>$ctime   );}

5

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