Checking the Sync by Playing Tracks
It is worth spending a few minutes to check that clips have synced correctly, for the following reasons:
- If you have three or more tracks, two clips that were successfully synced with each other might not have synced with a third clip.
- Occasionally, PluralEyes 3.5 matches two clips in error. This is most likely to happen when there are repeated takes of actors delivering lines; repeated pieces of music; or a short clip duration, like a few seconds.
You can find these issues by playing two or more tracks at the same time, and listening to whether they sound in sync.
Making the tracks audible
After the sync is complete, all tracks are audible (unmuted) by default. When you play one track, you will hear all tracks. For most projects, you can tell whether the clips are in sync just by listening to all tracks at once.
Mute a track. You can choose to listen to some tracks but not others, by clicking the Mute/Unmute button, shown at right, for a track in the Timeline. 
Solo a track. If you want to solo a track (that is, mute all other tracks but one), Option-click the Mute/Unmute button of the track you want to be the solo track. If that track is already the solo track, all the other tracks will be unmuted.
Adjust volume. Sometimes a camera or audio recorder used in a shoot records audio much louder than the other devices; for instance, if it is closer to the source of the sound. You can adjust the volume of a track by dragging the slider that appears to the right of the track name.
Mix Audio Automatically. If you want to hear only the tracks that are visible in the Viewer, choose Mix Audio Automatically from the Timeline menu. When this option is selected, PluralEyes automatically mutes and unmutes tracks whenever you choose to view a different track, so only the tracks you can see in the Viewer are audible.
Mix Audio Manually. If you want to select tracks to view without them automatically becoming unmuted, choose Mix Audio Manually from the Timeline menu.
Reset Volume Level for All Tracks. To hear the original volume levels of all tracks, choose Reset Volume Level for All Tracks from the Timeline menu.
Making the tracks visible
You can display the contents of one or two tracks in the Viewer.
There are a few reasons it is useful to see two tracks, side-by-side.
- Comparing the visual content of clips from different cameras can help you check that the clips are correctly synced with each other.
- When you display the contents of two tracks in the Viewer, the audio waveforms for those tracks are displayed in a way that facilitates detailed comparison of how the waveforms align.
To display one track at a time: In the toolbar, click the 1-Up button.
To display two tracks at a time:
- In the toolbar, click the 2-Up button.
- In the upper part of the Timeline, click the track that you want to see in the upper Viewer pane.
- In the lower part of the Timeline, click the track that you want to see in the lower Viewer pane.
- Optionally, scroll the upper or lower part of the Timeline, so you can see both tracks next to each other.
To display waveforms in more detail in the Viewer:
- To widen a waveform, drag the slider below the waveform. Dotted vertical lines will display, indicating the boundaries between video frames.
- To expand a waveform vertically, drag the slider next to the waveform. Dragging right also decreases the track volume; dragging left increase the volume.