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Strange keyframe issue with pen tool masking

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Dan Hastrey
Strange keyframe issue with pen tool masking
on Nov 7, 2019 at 12:47:48 am

Hello,
I have a strange problem with AE cc 2019.
I have to mask a moving person in a 4k video. Yesterday I spent about 2 hours of keyframing a mask. When I got back to the start of the layer to see my results, After effects changed the paths completely and randomly.
Today I gave it another try and after creating 10 keyframes (pen tool) I went back to the first keyframe and looked at the result. The first three times everything looked fine but when watching it for the fourth time, the mask points (path) where all over the place again.
Does anyone know if this is a bug?
I use Windows 10 and this PC is a heavy machine for video editing.


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Dan Hastrey
Re: Strange keyframe issue with pen tool masking
on Nov 7, 2019 at 4:14:57 am

Oops... forgot about the preserve constant vertex setting. All good.

Windows 10 Pro 64 bit - I9-9940X CPU @ 3.30 GHz - 128 GB RAM - Nvidia Geforce RTX 2080 Ti


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