Grass Valley iTX Desktop v.2.6 - Manual (Page 110)

The Event Editor
• When playout of the next primary event is on hold, iTX extends the duration of the current
schedule event (if necessary, by holding the last frame of the event on a freeze).
Join-in-progress events
An on-air live event with an increasing duration may prevent iTX playing out later events at
their scheduled times. As a result, it may be necessary for iTX to skip one or more events or to
join an event while it is in progress – i.e. play out the event from the middle instead of from its
in-point. By doing so, iTX can return the schedule timings to what they should be.
To control this type of operation, you schedule a join-in-progress event.
An event of this type has a Join In Progress time mode and a fixed start time. It has the effect of
temporarily splitting the schedule into two parallel streams when a channel is in the hold state;
i.e. when the next event to play out is on hold.
• The normal playout stream consists of: the on-air live event; the manual event that is on
hold; and any events after this but before the join-in-progress event. The start times of
events after the live event change as the live event overruns its scheduled duration.
• The join-in-progress stream consists of the join-in-progress event and following events
with the Auto time mode. iTX prepares these events, so it can put them on air when
required: it puts them into the Ready state and moves them along the timeline, but it does
not play them out. The start times of these events are not affected by the playout of
events before the join-in-progress event.
When the manual event is taken to air, the channel exits the hold state and a join-in-progress
operation takes place. iTX adds events that are waiting to play out in the join-in-progress
stream to the end of the normal playout stream. By doing so, it re-forms the schedule into one
continuous stream of events.
The following illustration shows a schedule that features a join-in-progress operation.
In this schedule, a live event is followed by a manual event and an event with the Auto time
mode; then by the join-in-progress event and a number of other events.
In the Schedule Grid, the start time of the join-in-progress event is highlighted green; this
shows the start time is fixed.
iTX plays out the events before the join-in-progress event in the normal way: first, the live
event; then, after it receives a Take Next request, the manual event; then the following event
with the Auto time mode. How it handles the events in the join-in-progress stream depends on
the effect of the duration of the live event.
March 2015 iTX Desktop: Operator Manual 90