Add effects to your project
You add effects to clips in your project using the Effects Browser.
Add an effect to a project clip
Select a clip in the Timeline and click the Effects button in the toolbar (or press Command-5).
In the Effects Browser, select an effect, using any of the following to help you make the selection:
To preview what the effect looks like using the video from the currently selected Timeline clip: Move the pointer over the video effect thumbnails.
To preview changing the effect’s primary control: Hold down the Option key while moving the pointer over a video effect thumbnail.
To filter the list of effects that appear: Type text in the Effects Browser search field.
Do one of the following:
Drag the effect to the Timeline clip to which you want to apply it.
Double-click the effect thumbnail to apply it to the selected clip.
You can now adjust the effect.