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.
Isolate elements with the Roto Brush in After Effects CC
Learn how to cut an element out of a video clip with the Roto Brush tool.
What you'll need
Create a Roto Brush selection
- Make sure the resolution and fast preview options are set to Full quality.
- Double-click the video layer in the Timeline panel to open it in the Layer panel.
- Select the Roto Brush tool from the Tools panel.
- Paint inside the object you want to isolate.
- Change the duration of the span to set the duration for the Roto Brush.
- Press Alt (Windows) or Option (MacOS) and paint over areas of a selection to remove those areas from the selection.
- Press the Spacebar to start and stop the analysis, and make changes to the selection as needed.
- Adjust the Roto Brush Matte options in the Effect Controls panel to fine-tune the selection.
Tip: Use the 1 and 2 keys on your keyboard to move up and down the timeline a single frame at a time. Once you have a satisfactory Roto Brush selection, press the Freeze button in the Layer panel to save it.
* Nguồn: After Effects CC
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