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Activity Forums Adobe After Effects Change mask vertex position after keyframes made…

  • Change mask vertex position after keyframes made…

    Posted by Nathan Quattrini on April 22, 2008 at 4:50 am

    I am animating a pain in the butt mask around a character, got about 7 seconds frame by frame to realize I missed a part. I tried going back and editing it…but a moved vertex on lets say second 3, will not stay moved since it was not orignally done…. it snaps back to its key-framed position on the next frame since thats where it was when it was key framed. Is there a way to make it stay in the moved spot for the duration of all keyframes following where I need to change it? So from 3 seconds to 7 seconds it would adjust to be in the new spot…I don’t want to start over :\

    Joey Foreman replied 18 years ago 3 Members · 4 Replies
  • 4 Replies
  • Mike Clasby

    April 22, 2008 at 6:36 am

    When I keyframe the mask shape, and change the first vertex, it stays in the same spot as long as you don’t move it (quick test). Maybe try a hold keyframe if there is a gap between keyframes, i.e. if there isn’t a keyframe on each frame.

  • Nathan Quattrini

    April 22, 2008 at 1:01 pm

    there are keyframes every frame because the mask is hugging a moving character. Esentially I want the change to take place from where I make it through to the last keyframe

  • Mike Clasby

    April 22, 2008 at 5:27 pm

    I guess I don’t really understand what your asking. When I change the first vertex with a mask shape keyframe it stays there unless changed with another keyframe (after selecting a different vertex>right clicking>Make First Vertex).

  • Joey Foreman

    April 22, 2008 at 7:55 pm

    Just add a new mask to cover the area you missed. There’s no way to select mask points over time and move them together. Trying to mask a character with one mask will always be a headache. Break the character into sections – head, limbs, torso, etc.
    You may have also figured out that it’s a good idea to set your masks to None while you rotoscope so that you can see everything you’re “tracing”.

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