Advanced green screen techniques
In the last recipe, Motion did a lot of the initial work for us. In this recipe, we'll select our own key color to remove the green and fine-tune the edges in the image. From there, we'll refine the key and look at some additional ways we can add, take away, and refine our selection.
Getting ready
Find a piece of green screen footage on your system as well as a file that you'd like to use as a background. Launch Motion and create a new project based on your clip settings. Make sure your playhead is at the beginning of the project. Go to the File Browser and find your footage. Click on the Import button to bring both files into your project.
How to do it...
Let's start by adding a Keyer to our clip like the last recipe.
Select the green screen clip in the Layers tab and press Command + 2 to go to the Library.
Go to Filters | Keying | Keyer. Drag the Keyer to the green screen clip in your Layers tab. Press F3 to go to the Filters tab of the Inspector.
The Strength...
