The RT Outline-Fill effect is located in the Titles Browser in Final Cut Pro X, in the Ripple Tools category. It can also be found in the Themes Browser.
To apply the RT Outline-Fill effect, drag it from the Titles Browser over the target clip or clips in your project.
If you want the effect to exactly match the duration of a single clip, then first make sure the playhead or skimmer is over the clip and press the X key to mark the clip range. Then, select the RT Outline-Fill thumbnail in the Titles Browser and press the Q key to connect it to the clip range.
Once in the project you can drag on the title to reposition it or drag on either end to trim it. Now, select it, open the Inspector if necessary (Command-4), and select the Title Inspector.
By default, the RT Outline-Fill effect automatically creates a thin white outline around any object that is on a transparent background. To see the original object, you can uncheck the Show Outline checkbox and set the Original Image Opacity to 100%.
The effect only works on images or video clips that have transparency. The above is a still image in the .png format. Other still image formats that support transparency include .tiff and .psd.
Instead of an outline, you can choose to fill the object with a solid color.
Or, if you are using the outline, you can enable the Neon Glow checkbox.
To add a background, click the Enable Drop Zone checkbox, click the Drop Zone well, and select a clip from the Event Browser.
Here’s a tip: if you want to use a generator for a background, one way is to get it into an Event so you can add it to the Drop Zone well. To do so, add it to your project, then make a compound clip out of it (File > New Compound Clip).
The RT Outline-Fill effect also works on subjects shot against a blue or green screen (or anything that can be keyed out).
For the RT Outline-Fill effect to work, you first need to remove the background with the Keyer effect.
Then apply the RT Outline-Fill effect. Here, I’ve set the Original Image Opacity to 100% and used a gradient generator for a background.