 
All anti-aliasing effects improve the image quality by smoothing pixelated or jagged edges within the image. There are various methods to achieve this. This anti-aliasing effect applies a super sampling anti-aliasing (SSAA) algorithm that you can adjust with a "Mix", "Width" and "Softness" parameter.
An alternative to anti-aliasing are the Blur effects, especially the downsampling ones.
Technical Information
This effect needs to be the first effect on the layer if you are working with images or videos (i.e. textures) that are bigger than the "Max. Internal Texture Size". The Internal Texture Size depends on your PB license and is adjustable in the Configuration tab under "Render Engine". The chapter "FX Order" explains how to drag effects in the Device Tree tab to change the order of applied effects.
Parameter
|
Description
|
Value Range
|
Default
|
Mix
|
Level of effect itself
|
0-255
|
0
|
Width
|
Width
|
0-1000
|
175
|
Softness
|
Softness
|
0-1000
|
250
|
|