actually an In point
is necessary (also an Out point)
if you have no media already in the timeline at and beyond the playhead
... the VO Tool needs a recording range for you to track to. normally it would take the playhead position in the timeline as the in point and then track to the clips in the timeline from that point forward, but if there is no media in the timeline at and beyond the playhead then you need to define the range with both an In
and Out point .. the total recording range defined in this fashion must be less than 5 minutes