public Event.gap (ClockTime timestamp, ClockTime duration)
Create a new GAP event.
A gap event can be thought of as conceptually equivalent to a buffer to signal that there is no data for a certain amount of time. This is useful to signal a gap to downstream elements which may wait for data, such as muxers or mixers or overlays, especially for sparse streams such as subtitle streams.
the start time (pts) of the gap
the duration of the gap
the new GAP event.