dark_jedi said:
Thanks M,how did you figure that? is there a formula? so 120px(60px from top and bottom) for 1.78:1,how many more for the other ratio's?
1.78 is 1.33 times wider than 1.33:1.
So in order to keep the correct AR, you need to also increase the height by 1.33.
Since you're limited to a height of 480px:
360 x 1.33 = 480