How to add an effect to a masked area?

I want to put the rain effect on only the cars windshield and have masked out that section. I tried to add the rain effect to the mask but it still covers the entire area and not just the windshield.  So how can I add the effect to only the masked area?


  • Use the mask in/on a grade layer in a composite shot.

  • edited June 2017

    Thanks but when I do this it distorts the image at the edges.


    Then when I try to size the layer to fix that more distortion occurs.


  • The Rain on Glass effect slightly scales down the video to replicate looking through thick glass. Go to Rendering in the Controls Panel and turn down Glass Thickness and Layer Distance.

  • Thanks for your help. It now works perfectly.

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