original_string: protected function leadFLV()
  	{
  		$lead = $this->ffprobeFormat("flv");
  
  		if ($lead === true)
  		{
  			return $this->closeCase("flv", "video/x-flv", $this->metadata);
  		}
  
  		return null;
  	}
code: protected function leadFLV()
  	{
  		$lead = $this->ffprobeFormat("flv");
  
  		if ($lead === true)
  		{
  			return $this->closeCase("flv", "video/x-flv", $this->metadata);
  		}
  
  		return null;
  	}
code_tokens: protected function leadFLV ( ) { $ lead = $ this -> ffprobeFormat ( "flv" ) ; if ( $ lead === true ) { return $ this -> closeCase ( "flv" , "video/x-flv" , $ this -> metadata ) ; } return null ; }
docstring: Checks if the file is a FLV.
  
  @return boolean|null
docstring_tokens: Checks if the file is a FLV .