After Effects Fundamentals: Stationary Masks

• When creating complex scenes it is important objects to receieve masks that will allow them to move behind or outside of them in order to create interesting dynsamic animations; unfortunately, after effects by default, is transforming your mask you apply to the layer you want to have one while the layer is transforming also

the solution for this is to:

• Create a solid layer*
• Under "TrckMat", you can select "Alpha inverted Matte " _______"
• "________" is the layer that needs the mask

* this layer with 'alpha inverted matte' needs to be located below layer with mask