Learn how refine the harsh edges of a Roto Brush selection.

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Download a sample file to practice with. This sample file is an Adobe Stock asset you can use to practice what you learn in this tutorial. If you want to use the sample file beyond this tutorial, you can purchase a license on Adobe Stock. Check out the ReadMe file in the folder for the terms that apply to your use of this sample file.

What you learned: How to refine the edges of a Roto Brush selection

Refine the edges of a Roto Brush selection with the Refine Edge tool

  1. Preview the Roto Brush selection on the video clip.
  2. Double-click the video layer in the Timeline panel and, if the Roto Brush selection is frozen, click the Freeze button in the Layer panel to unfreeze the selection.
  3. Select the Refine Edge tool from the Tools panel.
  4. Position the current-time indicator to the first frame of the Roto Brush selection, and set a brush size for the Refine Edge tool.
  5. Set the size of the brush for the Refine Edge tool, and draw a line around the edges of the Roto Brush selection.
  6. Press the Spacebar to start and stop the analysis, and make changes to the selection as needed.
  7. Adjust the Refine Edge Matte options in the Effect Controls panel to fine-tune the edge.

Tip: With any brush tool selected in the Tools panel, press and hold the Control (Windows) or Command (MacOS) key and drag up or down in the Layer panel to increase or decrease the size of the brush.

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