How To Start A Song At A Certain Point On Imovie. If you drop it to the background, then you cannot slide the clip to align it to an arbitrary position in the video clip. When you add an audio track, you can trim its start and end points by tapping on the audio track and then dragging the yellow handles on either end just as you would trim a video clip.
To add the song to your project, tap the plus button next to a song. After you add a soundtrack, you can change its length like any other type of clip. The track you select here won’t have its volume.
Once you move the playhead, do one of the following.
Click modify > trim to playhead from the menu bar. But some users still encounter some problems while working with it. To add background music to a certain part of video clips, drag the music to the video on where you'd like to begin, release the mouse button when you see the green add (+) symbol to add background music to imovie videos. Drag the music clip to the project and drop it on the video clip with which you wish to associate it.