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I am animating a volume meter, and have done the "tricky bit" of getting the volume value.

Now I want to apply the volume value to a mask , so that as the music moves, the mask is exposed in time to the beat.

I have tried two ways, the first by scaling the mask. However, I can't get it to scale in one direction only (i.e. it scales around a center point.) Even if I move the pan anchor it still doesn't pin the base of the shape.

The other way I tried was using a linear wipe. However, this was no good either, as the whole wipe effect is completed at 38% (i.e. if I move the slider the object vanishes totally at 38%, not 100% as I would expect.)

Is there a better way to do this?

Seems simple, but has me stumped.

1 Answer 1

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  1. Set the Anchor Point to the bottom of the asset by using the Anchor Point tool (Y)

    enter image description here Tool icon in CC versions

    enter image description here Tool icon in versions pre CC

    enter image description here

  2. Disable proportional scaling of that layer enter image description here and set the desired keyframes

Demo in AE 22.0.0

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Notes

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  • This doesn't work on v.17.1.1, apparently.
    – Lee Dean
    Jan 14, 2021 at 16:50
  • Still works the same way in AE 22.0.0 @LeeDean See the edit.
    – p2or
    Nov 9, 2021 at 18:55

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