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Creating a tracking mask

From: Motion 3 Essential Training

Video: Creating a tracking mask

So typically in the process of Keying, you'll have to create a thing called a Track Mask and basically what this is, is a Mask that follows your subject around and helps cut out any unwanted elements. So let's go ahead and draw one. Select your Breakdance layer, go up to the Bezier Mask tool. And what we want to do is just draw a mask around our dancer. And we want to make sure to have plenty of points when we do this because in the process of drawing a Track Mask, you don't ever want to really have to add points, sometimes that can cause major problems.

Creating a tracking mask

So typically in the process of Keying, you'll have to create a thing called a Track Mask and basically what this is, is a Mask that follows your subject around and helps cut out any unwanted elements. So let's go ahead and draw one. Select your Breakdance layer, go up to the Bezier Mask tool. And what we want to do is just draw a mask around our dancer. And we want to make sure to have plenty of points when we do this because in the process of drawing a Track Mask, you don't ever want to really have to add points, sometimes that can cause major problems.

And you'll notice, I am drawing way outside the dancer in different shapes, because in this exercise I want to create just a graphic look and the shape will bounce around and change as the dancer is dancing. Typically if we are using a Track Mask, you are doing a process called rotoscoping which is a little more precise where you want to actually have your Track Mask, right up against the edge of your object, but like I said, all we're trying to do right here is create a graphic style. And I want you to get the concept of actually drawing a Track Mask.

So now with the Mask drawn, turn on your record button, and let's move our playhead down just a little bit. And just move the Mask. And you should notice, if you move the playhead back, now our track mask is starting to move. Typically when you are rotoscoping, you have do this frame by frame and it's very, very tedious. But like I said, all we are doing is just trying to create a style for this dancer right now.

And we only have 2 seconds of this footage to do this process. And I want to keep the sharp edges on this, if you ever want to have rounded edges, all you do is hold down Command as you drag and you'll get your handles. I am going to Apple+Z to undo that. Move your playhead further down. Okay, now it's pretty far outside the Mask. If you want to move the entire Mask, just move inside and drag. And that will move the entire mask and then as you move your points, you want to make sure to click right on your anchor points, otherwise you will move the entire mask.

And like I said this is a relatively tedious process. So let's go ahead and move the playhead back here and hit the spacebar. And you know I had this little pop in my Mask here. So I want to go ahead and fix that. So that one frame, I'll just slide it back. And let's move, and now I am getting this jagged dancing mask around my outside dancer. When you are finished, make sure to turn your record button off and for this style, I would actually like to feather my Track Mask, so go ahead and just drag that out a little bit.

And now this is a little bit more along the lines of what I was looking for. And if you move the playhead back and forth, you can go ahead and check that out. So feel free to go through out to the rest of the two seconds and create this graphics style, using a Track Mask.

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This video is part of

Image for Motion 3 Essential Training
Motion 3 Essential Training

84 video lessons · 16443 viewers

Ian Robinson
Author

 
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  1. 6m 43s
    1. Welcome
      52s
    2. Why use Motion?
      1m 49s
    3. Important definitions
      2m 22s
    4. Using the example files
      1m 40s
  2. 23m 59s
    1. Launching Motion for the first time
      2m 0s
    2. Understanding the Motion interface
      3m 21s
    3. Navigating the Canvas
      5m 26s
    4. Controlling the Timeline
      3m 29s
    5. Using the Toolbar
      3m 2s
    6. Setting essential preferences
      3m 37s
    7. Customizing your keyboard
      3m 4s
  3. 25m 20s
    1. Adding outside assets
      4m 14s
    2. Using Library content
      2m 56s
    3. Working with layers
      6m 59s
    4. Working with groups
      5m 33s
    5. Using blend modes
      5m 38s
  4. 35m 21s
    1. Adding and adjusting behaviors
      4m 2s
    2. Applying behaviors to layers vs. groups
      1m 51s
    3. Adding multiple behaviors
      4m 8s
    4. Adding parameter behaviors
      5m 30s
    5. Trimming and sliding behaviors
      9m 23s
    6. Animating stills with behaviors
      10m 27s
  5. 18m 45s
    1. Using the Record button
      3m 33s
    2. Adding keyframes manually
      2m 49s
    3. Manipulating keyframes with the Keyframe Editor
      5m 36s
    4. Combining keyframes and behaviors
      3m 10s
    5. Working with recording options
      3m 37s
  6. 22m 51s
    1. Adding and formatting text
      5m 56s
    2. Creating text on a path
      4m 16s
    3. Animating text
      4m 18s
    4. Using pre-built text behaviors
      2m 1s
    5. Using text styles
      4m 13s
    6. Creating your own text preset
      2m 7s
  7. 15m 59s
    1. Applying and adjusting filters
      7m 0s
    2. Applying multiple filters
      4m 16s
    3. Being creative with filters
      4m 43s
  8. 8m 46s
    1. Understanding different types of keying
      2m 8s
    2. Pulling a simple key
      6m 38s
  9. 20m 27s
    1. Creating simple shapes
      6m 21s
    2. Adjusting shapes
      3m 1s
    3. Creating simple masks
      2m 33s
    4. Creating a tracking mask
      3m 24s
    5. Creating a complex mask
      2m 15s
    6. Creating image masks
      2m 53s
  10. 6m 48s
    1. Applying and adjusting generators
      3m 11s
    2. Generating a background
      1m 30s
    3. Generating a transition
      2m 7s
  11. 17m 33s
    1. Understanding particles
      2m 5s
    2. Creating basic particle systems
      5m 18s
    3. Making complex particles
      6m 13s
    4. Modifying particle behaviors
      3m 57s
  12. 17m 59s
    1. Replicating objects
      5m 6s
    2. Animating a replicator
      4m 32s
    3. Replicating a video file
      3m 31s
    4. Creating a lower third replicator preset
      4m 50s
  13. 14m 52s
    1. Painting in Motion
      8m 11s
    2. Sequencing paint stroke behavior
      3m 54s
    3. Applying paint dynamics
      1m 26s
    4. Painting from shapes
      1m 21s
  14. 25m 43s
    1. Using 3D space
      4m 52s
    2. Working with cameras
      3m 55s
    3. Using camera behaviors
      3m 41s
    4. Lighting a scene
      4m 56s
    5. Creating 3D text
      1m 53s
    6. Creating 3D replicators
      2m 27s
    7. Creating 3D particles
      3m 59s
  15. 14m 42s
    1. Applying Match Move: Four-corner pin
      3m 11s
    2. Applying Match Move: Transform
      1m 48s
    3. Working with stabilization
      2m 11s
    4. Retiming video
      4m 3s
    5. Retiming with behaviors
      3m 29s
  16. 11m 24s
    1. Adding and adjusting audio
      4m 51s
    2. Adding audio markers
      2m 56s
    3. Applying the audio parameter behavior
      3m 37s
  17. 7m 31s
    1. Exporting files
      2m 49s
    2. Creating an export preset
      2m 51s
    3. Archiving your project
      1m 51s
  18. 22m 25s
    1. Sending your project to Compressor
      3m 35s
    2. Roundtripping between Motion and Final Cut Pro
      7m 11s
    3. Creating drop zones
      5m 27s
    4. Creating templates for Motion
      2m 19s
    5. Creating templates for Final Cut Pro
      1m 14s
    6. Creating DVD Studio Pro menus
      2m 39s
  19. 14s
    1. Goodbye
      14s

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