The settings on this page control the appearance and behavior of the timeline
in the main program window:
Number of Overlay Tracks
This controls the number of overlay tracks (the V1 through V96 tracks)
displayed on the timeline. You can either click in the box and type in the desired
number or you can use the scroll buttons to adjust the number.
Frames per Second Rate
Controls the number of frames displayed per second for the video, and can be
adjusted in the same way as the overlay tracks setting.
Defines how MainActor Sequencer renders the video internally. The video will
always be rendered in this format. When exporting the video, it will be first
rendered at the timeline resolution and then scaled to the export settings (if
they are different).