protected function leadAAC()
	{
		$lead = $this->ffprobeFormat("aac");

		if ($lead === true)
		{
			return $this->closeCase("aac", "audio/aac", $this->metadata);
		}

		return null;
	}
protected function leadAAC()
	{
		$lead = $this->ffprobeFormat("aac");

		if ($lead === true)
		{
			return $this->closeCase("aac", "audio/aac", $this->metadata);
		}

		return null;
	}
protected function leadAAC ( ) { $ lead = $ this -> ffprobeFormat ( "aac" ) ; if ( $ lead === true ) { return $ this -> closeCase ( "aac" , "audio/aac" , $ this -> metadata ) ; } return null ; }
Checks if the file is a AAC

@return boolean|null
Checks if the file is a AAC