'Scanline 2' - doubles size of picture (Pic's MAX size must be more or equal than future doubled size of your picture. Else you will see Error message). Doubling method 'Scanline' usually used in Video-guard systems and allows to double picture 'almost' without quality loss (in real - your brain imaging picture in places, where black lines is between rows of pixels). Type Standard or Mild - allows you to select simple or blurred type of effect.