Easy-to-follow video tutorials help you learn software, creative, and business skills.Become a member

Exploring mask modes

From: After Effects Apprentice 05: Creating Transparency

Video: Exploring mask modes

I want to show you a couple of ideas how to combine multiple mask shapes. If you've got the exercise files that came with this lesson, open up the project 05-Mask Modes' Starter. This is just our landscape that we played around with at the very beginning of this lesson. Let's start with a couple of simple mask shapes, just to illustrate a point, then we'll move on to more complex example. I am going to make sure my layer is selected, very important, select my Mask Shape tool and go to Rectangle to start, drag out a part of this landscape, like that.

Exploring mask modes

I want to show you a couple of ideas how to combine multiple mask shapes. If you've got the exercise files that came with this lesson, open up the project 05-Mask Modes' Starter. This is just our landscape that we played around with at the very beginning of this lesson. Let's start with a couple of simple mask shapes, just to illustrate a point, then we'll move on to more complex example. I am going to make sure my layer is selected, very important, select my Mask Shape tool and go to Rectangle to start, drag out a part of this landscape, like that.

Change to an Ellipse tool and drag out. The second portion of landscape that intersects with the first one, so I have two masks. I'm going to go ahead and rename this oval, rectangle, all right. Next to the mask names is a popup that is the Mask mode. How do these masks interact with each other? Add is the default that basically says keep adding what's inside a mask to create a composite image.

Well, let's say we take the oval and say instead of adding, I want to subtract you. Now the oval is cutting out the rectangular mask. What if I say, just show me the Intersection in between you two? Now this is just where the oval and the rectangle overlap each other. And finally show me the Difference between the two, exclude where the two overlap but give me everything else where they don't overlap. There is other modes as well, such as Lighten and Darken. These come in handy when you have partial transparency and you're trying to get areas such as feathered mask to overlap nicely, and of course, you always have the ability to invert masks.

By the way the stacking order also has some effect on how these masks interact with each other. I need to go back to Add and maybe I'll go to simple Subtract there or Invert. Anyway that's the general concept of mask modes. Now let's have a bit more fun. I'm going to Layer > Mask > Remove All Masks, and now let's say I want to start off with just a simple oval mask that's going to go ahead and take in most of the landscape. With my layers selected, I'll double click the Ellipse tool and now I've got a nice oval to start with.

Now let's say I want something more complex inside the middle of here, say, well, how about these leaves I was playing with earlier? So let's go back to those leaves. I can either select one keyframe to select just that mask shape and copy it, or I can click on the word Mask Path, highlighting both of the keyframes, and copy the entire mask animation. I will do Command+C or Ctrl+C, go back to my Mask Modes*starter, make sure the current mask is not selected.

I don't want to replace it. I want to create a brand-new mask. To do that I can hold down the Shift+F2, which says keep the layers selected by deselecting anything inside like a mask shape. Command+V or Ctrl+V to paste and there is my leaves. But they are not doing anything, because you are just adding to the existing oval and the oval encompasses the leaves. Let's say I want that to cut out, very simple. I'll say Subtract. And now the leaves have been cut out from the oval. Now, what if I want the opposite effect? Maybe I want the oval to subtract from the overall shape, and the leaves to add their shape back in.

You get an idea now of how these different shapes can interact and you can have a bit of fun. So don't restrict yourself to trying to draw everything with one mask shape. Think about how you might be able to create multiple shapes and have them interact in interesting ways to create more complex looks in animations.

Show transcript

This video is part of

Image for After Effects Apprentice 05: Creating Transparency
After Effects Apprentice 05: Creating Transparency

38 video lessons · 12708 viewers

Chris Meyer and Trish Meyer
Author

 
Expand all | Collapse all
  1. 3m 17s
    1. Overview
      1m 17s
    2. Using the exercise files
      2m 0s
  2. 28m 53s
    1. Creating basic mask shapes
      5m 7s
    2. Using advanced parametric shapes
      3m 35s
    3. Basic mask shape editing
      4m 35s
    4. Masking in the Layer panel
      1m 55s
    5. Working with mask parameters
      4m 0s
    6. Animating masks
      5m 52s
    7. Creating vignettes
      3m 49s
  3. 25m 56s
    1. Masking with the Pen tool
      6m 44s
    2. Editing a mask path
      6m 19s
    3. Using RotoBezier masks
      4m 32s
    4. Targeting masks for animation
      3m 13s
    5. Setting the first vertex point
      5m 8s
  4. 19m 7s
    1. The basics of variable-mask feathering
      7m 33s
    2. Exploring variable-mask feathering options
      5m 56s
    3. Exploring visual effects applications
      5m 38s
  5. 7m 55s
    1. Exploring mask modes
      3m 58s
    2. Fading mask opacity
      3m 57s
  6. 11m 48s
    1. Using targeted treatments
      2m 35s
    2. Filling mask shapes
      3m 8s
    3. Following mask paths
      6m 5s
  7. 13m 31s
    1. Using alpha mattes
      3m 48s
    2. Grouping track matte pairs
      3m 40s
    3. Working with luma mattes
      3m 52s
    4. Animating mattes
      2m 11s
  8. 10m 0s
    1. Using Stencil Luma
      3m 5s
    2. Using Stencil Alpha
      2m 5s
    3. Using effects with stencils
      2m 20s
    4. Stacking stencils
      2m 30s
  9. 8m 23s
    1. Quizzler challenges
      1m 18s
    2. Quizzler solution one: One word at a time
      3m 53s
    3. Quizzler solution two: Stroke drawing direction
      3m 12s
  10. 11m 18s
    1. Idea corner one: More masks and effects
      2m 50s
    2. Idea corner two: Transition effects
      3m 44s
    3. Idea corner three: Sequenced layers as mattes
      4m 44s
  11. 16m 29s
    1. Understanding track matte rendering order
      5m 48s
    2. Exploring mask interpolation
      10m 41s

Start learning today

Get unlimited access to all courses for just $25/month.

Become a member
Sometimes @lynda teaches me how to use a program and sometimes Lynda.com changes my life forever. @JosefShutter
@lynda lynda.com is an absolute life saver when it comes to learning todays software. Definitely recommend it! #higherlearning @Michael_Caraway
@lynda The best thing online! Your database of courses is great! To the mark and very helpful. Thanks! @ru22more
Got to create something yesterday I never thought I could do. #thanks @lynda @Ngventurella
I really do love @lynda as a learning platform. Never stop learning and developing, it’s probably our greatest gift as a species! @soundslikedavid
@lynda just subscribed to lynda.com all I can say its brilliant join now trust me @ButchSamurai
@lynda is an awesome resource. The membership is priceless if you take advantage of it. @diabetic_techie
One of the best decision I made this year. Buy a 1yr subscription to @lynda @cybercaptive
guys lynda.com (@lynda) is the best. So far I’ve learned Java, principles of OO programming, and now learning about MS project @lucasmitchell
Signed back up to @lynda dot com. I’ve missed it!! Proper geeking out right now! #timetolearn #geek @JayGodbold
Share a link to this course

What are exercise files?

Exercise files are the same files the author uses in the course. Save time by downloading the author's files instead of setting up your own files, and learn by following along with the instructor.

Can I take this course without the exercise files?

Yes! If you decide you would like the exercise files later, you can upgrade to a premium account any time.

Become a member Download sample files See plans and pricing

Please wait... please wait ...
Upgrade to get access to exercise files.

Exercise files video

How to use exercise files.

Learn by watching, listening, and doing, Exercise files are the same files the author uses in the course, so you can download them and follow along Premium memberships include access to all exercise files in the library.


Exercise files

Exercise files video

How to use exercise files.

For additional information on downloading and using exercise files, watch our instructional video or read the instructions in the FAQ.

This course includes free exercise files, so you can practice while you watch the course. To access all the exercise files in our library, become a Premium Member.

Join now "Already a member? Log in

Are you sure you want to mark all the videos in this course as unwatched?

This will not affect your course history, your reports, or your certificates of completion for this course.


Mark all as unwatched Cancel

Congratulations

You have completed After Effects Apprentice 05: Creating Transparency.

Return to your organization's learning portal to continue training, or close this page.


OK
Become a member to add this course to a playlist

Join today and get unlimited access to the entire library of video courses—and create as many playlists as you like.

Get started

Already a member?

Become a member to like this course.

Join today and get unlimited access to the entire library of video courses.

Get started

Already a member?

Exercise files

Learn by watching, listening, and doing! Exercise files are the same files the author uses in the course, so you can download them and follow along. Exercise files are available with all Premium memberships. Learn more

Get started

Already a Premium member?

Exercise files video

How to use exercise files.

Ask a question

Thanks for contacting us.
You’ll hear from our Customer Service team within 24 hours.

Please enter the text shown below:

The classic layout automatically defaults to the latest Flash Player.

To choose a different player, hold the cursor over your name at the top right of any lynda.com page and choose Site preferencesfrom the dropdown menu.

Continue to classic layout Stay on new layout
Exercise files

Access exercise files from a button right under the course name.

Mark videos as unwatched

Remove icons showing you already watched videos if you want to start over.

Control your viewing experience

Make the video wide, narrow, full-screen, or pop the player out of the page into its own window.

Interactive transcripts

Click on text in the transcript to jump to that spot in the video. As the video plays, the relevant spot in the transcript will be highlighted.

Are you sure you want to delete this note?

No

Your file was successfully uploaded.

Thanks for signing up.

We’ll send you a confirmation email shortly.


Sign up and receive emails about lynda.com and our online training library:

Here’s our privacy policy with more details about how we handle your information.

Keep up with news, tips, and latest courses with emails from lynda.com.

Sign up and receive emails about lynda.com and our online training library:

Here’s our privacy policy with more details about how we handle your information.

   
submit Lightbox submit clicked
Terms and conditions of use

We've updated our terms and conditions (now called terms of service).Go
Review and accept our updated terms of service.