Working with audio
As well as video clips, it’s possible to drag audio files onto the timeline to add sound effects or background music to your video. By default you’ll see an audio-only Track 3 available for this purpose. Audio clips can be trimmed and dragged like regular video clips, and volume changes can be automated using envelopes. To set this up, click on the line along the middle of the audio clip to create a “node”, then drag that node up or down to fade or boost the volume at that point. To make this easier, you can expand the track view by dragging the track-dividing line in the track list. In the same way, you can also edit the volume envelopes of video clips – click the waveform in the lower half of…