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After effects parent to null

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Ben GoghAfter effects parent to null
by on Sep 17, 2012 at 10:45:33 am

Sometimes when I parent a precomp or layer to a null, the precomp shifts out of its original position.

Whats happening here and is there a work around?


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Steve BlackerRe: After effects parent to null
by on Sep 17, 2012 at 4:18:03 pm

Are you using CS6? If so, did you hold shift while parenting? A new feature in CS6 will snap a child layer to the position of the parent if you hold shift while parenting the layer.

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Darby EdelenRe: After effects parent to null
by on Sep 18, 2012 at 3:56:45 pm

If you're holding Shift (in CS6) or Option/Alt (at least as early as CS3) while parenting it can cause the layer to move.

Shift will move the child layer to the parent layer's location (set the child layer's position to [0,0]). Option will move the child layer relative to the parent layer's position (the child layer's position property remains unchanged).

If you look at the position property of the child layer while you try the three parenting modes (no modifier, +shift, +opt) you should see the difference.

Darby Edelen

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Ben GoghRe: After effects parent to null
by on Sep 22, 2012 at 3:55:45 am

I'm using a liquify filter on an adjustment layer. When I parent the mesh offset value in the filter to the null postion value, the liquify filter moves to the position of the null. The filter is motion tracked but out of position by say x value 200 y value 400. (Parenting the adjustment layer position to null does nothing is not relevant for liquify).

Is there an expression I can add to the end of the motion offset expression to move the x values-200 and the y values -400? So it will sit back in place where it should be and track normally?

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