Composite Assets with the Mask Effect

The Mask effect is a great way to composite clips in your video. The word composite means to merge or fuse, and in this tutorial compositing assets refers to merging elements or clips in your video. Masking allows you to create holes in one clip that allow another clip to show through. Another way to think of it is as selective transparency. In the examples below, the shape and placement of a mask on a clip determines the visibility of what is underneath.

There are many ways to use this effect. This tutorial is going to explore two.

Creating a Background and Foreground Effect

In this first example, the shape of a mask on one layer allows another layer to show through, creating an interesting background and foreground effect. Let's get started.

  1. Import an image or video clip into the Camtasia media bin. For this tutorial, start with an image that focuses on a single subject like a car, insect, or flower. Once you've worked through the tutorial once, try it again with more complicated images or video clips.
  2. Drag the image or video from the media bin to the timeline.

  3. Adjust the canvas view to 75% to see more of the canvas area.
    adjust canvas
  4. At this point, if your media clip doesn't fit the canvas exactly, that's okay. You can either adjust the size of your image to fit your canvas using the control handles on the preview pane, or choose Edit > Adjust Canvas, and edit the dimensions of your canvas to fit your image.
  5. Create another instance by choosing Edit > Copy, then Edit > Paste. The copy should generate on a new track directly above the original.
  6. Choose Edit > Deselect All so that neither instance is selected.
  7. Click on the Video FX tab and select Mask.
  8. Drag the effect to the timeline, and drop it the on the second image, the one on the upper track.
    drag and drop
  9. Applying the effect will automatically select that clip. On the canvas, click and drag the control points of the red rectangle, until it frames your subject.
    red control handles
  10. Click the Properties button to open the properties. In the Basic Properties and Effects tab, adjust the scale of your image to 125% and press Enter or Return.

  11. In the Annotations tab, click and drag the blur annotation to a new track between the images on the timeline. Hovering between the two tracks will auto-generate another track. Drop the blur annotation onto the new track.
  12. blur

  13. Use the control handles to adjust the scale of the blur annotation. Size it to fit your canvas (which should still be the same size as the images), then open the properties and set the blur opacity to 75%.
    blur properties
  14. Save your work by choosing File > Save.
    final image

Creating an Inverted Mask Effect

This second example demonstrates how to use inverted shapes as a mask to hide part of your clip.

  1. Import an image or video clip and drag it onto the timeline.
    import media
  2. Adjust the canvas view to 75% to see more of the canvas area.
    adjust canvas
  3. In the Annotations tab, click on shapes and select the black rectangle.
  4. Drag the rectangle shape to the timeline and drop it on the track directly above your media clip.
    add to timeline
  5. Change the duration of the rectangle on the timeline to match that of your media clip.
  6. Size the shape to fit your canvas by using the control handles or the scale slider control in the properties.
    control handles
  7. Click on the Video FX tab and select Mask.
  8. Drag the effect to the timeline, and drop it on the shape you created. Notice that it changes the shape of your rectangle to an oval. For now, leave it as an oval. If you wish to change it back to a rectangle, though, you can do so in the Basic Properties and Effects tab, under Mask. Simply change the dropdown option from oval to rectangle.
    drop mask
  9. Click on the Properties button to open the properties, and in the Basic Properties and Effects tab, under Mask, check Invert.
  10. Set the Mask Blend to 0. Set the Mask Opacity to 30%.
  11. On the canvas, click and drag the red control handles, until they frame your subject.

  12. Save your work by choosing File > Save.

There are many other ways to use masks to create layered effects in Camtasia for Mac. Neither of these examples work extensively with video clips, but if you use the Custom animation to change the effects properties over time, you can create some really neat mask effects.

Title Category Level Format
000 - 0: Introduction Getting Started I Video
001 - 1: Make a great recording: Prepare, Script, Rehearse Getting Started I Video
002 - 2: Make a great recording: Select, Start, Pause Getting Started I Video
003 - 3: Editing essentials: Explore the Editor Getting Started I Video
004 - 4: Editing essentials: What You Really Need to Know Getting Started I Video
005 - 5: Editing essentials: Preview, Trim, Cut Getting Started I Video
006 - 6: Increase viewer understanding: Zoom, Pan, Bam Getting Started I Video
007 - 7: Increase viewer understanding: Annotations Getting Started I Video
008 - 8: Increase viewer understanding: Cursors & Clicks Getting Started I Video
009 - 9: Make your screencast stand out: Transitions Getting Started I Video
010 - 10: Make your screencast stand out: Animations & Video FX Getting Started I Video
011 - 11: Make your screencast stand out: Maintain Consistency Getting Started I Video
012 - 12: Create better audio: Mics, Recording, Audio FX Getting Started I Video
013 - 13: Share your screencast: The Great Export Getting Started I Video
014 - 14: Share your screencast: and YouTube Getting Started I Video
015 - Zooming: The Often Misunderstood Half-Holy Grail of Screencasting Quality Main Concepts I Video
016 - Editing Dimensions Basics Edit I Video
017 - Recording Tips Record I Written
018 - Keyboard Shortcuts Reference II PDF
019 - Add Interactive Hotspots to Your Video Additions I Written
020 - Composite Assets with the Mask Effect Effects II Written
021 - For Camtasia Studio 8 Users: Feature Comparison Chart Reference II Written
022 - Add a Device Frame Around Your Video Video FX II Written
023 - Apply an Animated Highlighter Effect Animations II Written
024 - Brand Your Video with a Watermark Additions II Written
025 - Captions Audio II Video/Written
026 - Change the Canvas Background Color Canvas II Written
027 - Choosing Dimensions for Quality Video Production Reference II Written
028 - Create ADA-Compliant Captions Audio II Written
029 - Create a Table of Contents for Video Navigation Additions II Written
030 - Create a Title Additions II Written
031 - Embed Video on a Web Page or Blog Share III Written
032 - Magnify the Cursor with Cursor Effects Cursor FX II Written
033 - Maintain Privacy with the Blur Annotation Annotations II Written
034 - Markers Edit II Written
035 - Record a PowerPoint or Keynote Presentation Record II Written
036 - Remove a Color from a Video Effects II Video/Written
037 - Replace a Section of Audio on the Timeline Audio II Written
038 - Save an Annotation for Reuse Annotations II Written
039 - Speed Up or Slow Down the Speed of a Clip Effects II Video/Written
040 - Working with the FX Drawer Effects II Written
041 - Connecting Your Mobile Device Mobile I Video
042 - Creating and Sharing Mobile Content with Windows Devices Mobile I Written
043 - Access and Share Files with My Places Sharing II Written
044 - Recording Your iOS 8 Device Mobile I Video