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Auto trace so that the mask does't twitch

New Here ,
Apr 28, 2021 Apr 28, 2021

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Hello. Is there any way to auto trace simple geometry figure so that the mask merely follows this moving object and is not being re-rendered differently with every frame? There changes are very small but destroy the full image after rendering something on the mask, for example extrude objects that are thought to be solid not liquid and tweaking.

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Adobe Community Professional ,
Apr 28, 2021 Apr 28, 2021

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The only thing you can do is to remove some of the generated keyframes inside the masks and change the keyframe interpolation to have some kind of progression.

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New Here ,
Apr 28, 2021 Apr 28, 2021

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I believe there should be a reason why autotrace effect renders mask on the same elementary geometric figure differently everytime although the figure remains the same. 
You can see that this guy somehow manages to extrude the perfectly on static figures

https://www.youtube.com/watch?v=Tu96yevGMEA

Ludovico Einaudi - ExperienceClick the 🔔bell to always be notified on new uploads!♫ Listen on Spotify: http://spoti.fi/2LdpqK7♫ Instagram: http://bit.ly/rou...

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Adobe Community Professional ,
Apr 28, 2021 Apr 28, 2021

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Of course, if you look at the AutoTrace panel, you can select what channel is using AE to create the masks. A little change in luminance in those channels can modifiy the shape of the masks. You have some controls about smoothing and thresold to avoid creating keyframes in all of this changes but this tools has some limitations.

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