Creative Communities of the World Forums

The peer to peer support community for media production professionals.

Activity Forums Adobe After Effects Question about using Subtract and Divide Tutorial

  • Question about using Subtract and Divide Tutorial

    Posted by Ryan Dishongh on August 27, 2010 at 8:37 pm

    I have a triangle shape that I am moving around on screen and I also have some footage in the same composition. I am trying to use the tutorial to get the footage masked around the edges and just inside the triangle. I’m basically using the triangle as a matte. During the animation the triangle is rotating a little bit and it is also scaleing down quite abit. It’s a big illustrator file at the moment…

    So I have the tutorial working at it’s most basic level but as the triangle scales down I want the footage to scale down as well keeping the matte as the same scale properties as the scaling down triangle. However when I scale down the footage it scales down the matte with the footage’s scale properties. How can I fix this? Any solutions are greatly appreciated. And If there are easier ways of doing this plz let me know. If you need to see a video Of what I am talking about I can post a link.

    Thanks!
    Ryan

    Ryan Dishongh replied 15 years, 9 months ago 60,698 Members · 3 Replies
  • 3 Replies
  • Ryan Dishongh

    August 29, 2010 at 1:21 am

    It is parented to the triangle and it moves and scales with the triangle however I want more of the scene to show up in the masked triangle and I think doing this is a completely different thing. Because right now I have the matte effect on the footage as it is in the tutorial but I’m also scaling down the footage. I have an example of my project here with the faulty effect:

    https://www.blood-sugar.net/Work/DamageTest.mp4

    As you can see I want to start it out with the triangles at 0% opacity where you can see the right color balance on the footage and then as the triangles scale down it fades to 100% opacity. I hope you have a solution. I believe something like this is pretty easy to do I think I’m just missing a couple of steps.

  • Ryan Dishongh

    August 30, 2010 at 12:34 pm

    If someone could help me out that would be great! If not I may have to take a new aesthetic direction in my project.

  • Ryan Dishongh

    August 31, 2010 at 8:52 pm

    Can anyone help????

We use anonymous cookies to give you the best experience we can.
Our Privacy policy | GDPR Policy