exec("/usr/local/bin/mplayer -identify {$save_flv} -ao null -vo null -frames 0 2>/dev/null | grep ^ID_", $info);
			  foreach($info as $v){
  				  $v = explode('=',$v);
  				  $m_info[$v[0]] = $v[1];
			  }
			  $step = $m_info['ID_LENGTH'] / THUMBS_COUNT;
              $cur_sec = 0;
			  for($j = 0; $j < THUMBS_COUNT; $j++){
				  exec("/usr/local/bin/ffmpeg -i {$save_flv} -an -ss {$cur_sec} -r 1 -vframes 1 -y -f mjpeg ".$dir3.'/'.$dirname."/{$j}.jpg");
				  $cur_sec += $step;
			  }