Comparing Tracks
In Timeline, you can compare two tracks together, such as an online and offline version. By merging both tracks into a single image, you can compare the two for editing synchronization, color matching, etc.
The split screen compares versions as well as video tracks.
To compare tracks in Timeline:
Click the Timeline tab.
Set the Primary and Secondary tracks.
In the View Area menu bar, click Options
Show View Settings.
In section Compare Mode / Stereo, select a comparison mode.
Depending on the mode, you will have different options to compare the two tracks.
Note: Is you cannot select mode, you must define a secondary track on the timeline since you always compare the primary track to the secondary. To set the secondary track, in the Patch panel, right-click a track and select Set as Secondary Track.