4.2

To preview the transcoded source file:
Make sure the Comparison button is
selected (highlighted blue), and then click
the Play button .
To modify the start and end point of the
output file: Drag the In point or Out point
to a different location in the timeline.
To jump between markers or In and Out
points: Click the Previous button or Next
button .
To zoom in or out on the preview area:
click the Zoom pop-up menu in the upper
right, and select a zoom level.
To display closed captions in the preview
area: click the Closed Captions button .
You can also use the Marker pop-up menu