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Problems with creating a mask in AE 4.1

Jan 16, 2012 2:03 PM

Hi all,

 

Yes, I'm using After Effects 4.1... not CS4... that's version 4.1 from 13 years ago.

 

I'm having a problem creating a simple mask and I can see from a more current AECS5 tutorial that creating a mask on a layer is similar to creating one in AE4 based on a comparison to an old AE4 tutorial.  I've read instructional material and it seems simple enough, but for some reason its not working for me... I know I'm doing something wrong.  I'm an advanced Photoshop user and I know the concept of layer masks and how to create them.

 

I create the mask on a layer and I can see and adjust the bezier points to adjust the shape of the mask... adjusting the shape of the mask by the bezier points is a little tricky since it stretches in both directions when you grab a single point, but that's okay,

 

But no matter which mask mode I try, Add, Subtract, Intersect, Lighten, Darken or Difference, it is not masking the layer that it is attached to even when I preview the timeline.

 

I don't want to just create a color layer on top of the layer I want masked to simulate a mask (which I can otherwise do) because I want to stack layers with masks and have the unmasked parts showing through (like in Photoshop), without rendering separate layers and re-importing them with blue screening or black screening... I should just be able to mask the parts that I don't want to show up on each layer and only have the unmasked parts of each layer show through each other for my final render.

 

Thanks for any input,

 

digi

 
Replies
  • Currently Being Moderated
    Jan 16, 2012 2:47 PM   in reply to digiday

    I'm wondering if you're masking the right way for the software version.

     

    In AE 4.1, I'm pretty sure you have to double-click on a layer to open it in its own window, and THEN mask.  Then you close the window to see the comp window.  It's kind of klunky, but hey: we got work done with it.

     

    And the masking modes work just fine.  Or at least they should.

     
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  • Currently Being Moderated
    Jan 16, 2012 2:49 PM   in reply to digiday

    The procedure for creating a mask using the pen tool has always been the same. The default mode is ADD. You just have to close the mask.

     

    Create a new solid layer. Use the pen tool and click around the image until you get a shape. When the mask closes only the area inside the shape remains.

     

    Go through the basics of AE here. It's quite straight forward. All of the basics, setting up a project, masking, setting keyframes, haven't changed a bit.

     

    Here's a quick demo. Works in AE 3, 4 all the way to CS5.5.

     

     
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  • Currently Being Moderated
    Jan 17, 2012 9:26 AM   in reply to digiday

    Oh, now I get it!  Because of the effect you're using, the mask is ineffective.  You know about track mattes?  Use a solid as a track matte for the digital clock layer to conceal the unwanted digits.

     
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  • Currently Being Moderated
    Jan 17, 2012 9:27 AM   in reply to Dave LaRonde

    You can also pre-compose the layer and add the mask directly to the pre-comp.

     
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  • Currently Being Moderated
    Jan 17, 2012 9:31 AM   in reply to Rick Gerard

    Yeah, and if you want to re-familiarize yourself with the way masks work in AE 4.1, just use a plain-old solid, with no effects applied to it.  You'll have a lot better luck.

     
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  • Currently Being Moderated
    Jan 17, 2012 9:57 AM   in reply to digiday

    Track mattes haven't changed one whit since the days of AE 4.1.  You could look at AE 10.5 Help, search for "track matte" and find the info there useful.

     
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  • Currently Being Moderated
    Jan 17, 2012 5:06 PM   in reply to digiday

    Watch this simple movie:

     

     

    Keyboard shortcuts used Cmnd + N (new composition), / .,,.. (zoom in and out of composition window), Cmnd + Y (new solid), g (select pen tool), m (reveal mask path in timeline). That's all there is to it.

     

    The only thing you may be missing is that you may have vidw masks turned off in the Composition window. It looks something like this:

     

    Screen Shot 2012-01-17 at 5.06.28 PM.png

     
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  • Currently Being Moderated
    Jan 17, 2012 6:44 PM   in reply to digiday

    I was pretty sure that editing masks in the comp window was introduced in AE 4.1. In 3.0 you had to edit in in the layer window but you could easily drag the layer window next to the comp window so you could see both. The CTI is linked so everything is fairly easy. I've been using After Effects since the Cosa Days (October 1993). I've written tutorials since AE 3.0 and It's possible that I've got my versions/features out of order.

     

    A quick Google search brought up this video. It shows how to drag the layer window next to the composition window so you can edit in the layer window and see what's going on. I also found that it was CS4 that introduced multiple masks on a single layer and the boolean operators for the masks. Take a look and see if this workflow tutorial from will work for you.

     

     
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