Recording Narration
If you choose to record audio by using GarageBand, you can do so easily by selecting the track that you want to record to, placing the recording head at the point where you want to begin recording, and clicking the Record button (the circular button with a red circle in the middle). If you display the Track Information pane, you see a video preview while recording, which makes narrating what is going on in the video fairly easy. If you don’t see the video preview, you might need to click the disclosure triangle next to the word Detail to hide additional details about the sound effects being applied to the track.