Grass Valley iTX System v.2.6 - Manual (Page 253)

Working with iTX services on an Output Server machine
Remove all logos
Where an operator has a problem in trying to remove a logo from the screen, you can use a
master control to switch off all logos.
1.
Click Remove All Logos to remove all logos that are currently switched on in a schedule.
Logos due to come on later in the schedule play as normal.
Remove all Captions
Where an operator has a problem in trying to remove a CG from the screen, you can use a
master control to switch off all CGs.
1.
Click Remove All Captions to remove all CGs that are currently switched on in a schedule.
CGs due to come on later in the schedule play as normal.
Enable Cue To First Frame
Cue to first frame is a feature that enables iTX to act like a traditional video server in displaying
the first frame of a video clip that is waiting to be played out.
This takes effect when iTX is not playing out a video clip but holds one cued, ready for playout.
It is particularly useful in a system in which iTX supplies a part-time video feed to a downstream
transmission device such as a vision mixer.
A video monitor or multiviewer connected to the channel output can then be used to preview
the first frame of future clips during breaks in the schedule.
For instance, in a production environment, iTX may provide one of the inputs to a Grass Valley
Imagestore 750, while other inputs come from live feeds, studios or other devices.
Cue to first frame requires iTX to cue the video clip to its in-point and display the corresponding
frame continuously in the channel output signal. At its scheduled start time, or when taken to
air manually, the clip starts playing from the displayed frame.
There are two ways of triggering a cue to first frame:
• It may happen automatically, as a scheduled operation, when the time to the start of a video-
clip event equals the channel standby time.
• It may be manually controlled: either by an operator at an iTX Desktop workstation clicking
the cue button for the next, or any selected, video-clip event; or by an operator using an
Nvision control panel with iTX Master Control.
Where a cue to first frame is triggered while iTX is still playing out a video clip, the first frame
will be displayed about 2 seconds after this video clip finishes (if the timing falls within a
schedule gap).
iTX can cue multiple clips internally. It does so, for instance, when one video-clip event
immediately follows another one that has a duration of less than the channel standby time. iTX
outputs the first frame of the first video clip to be cued. It continues to do so, even when other
video clips are cued after the first one.
Cue to first frame is also available on channel start-up, when iTX displays colored bars before
the first schedule event.
March 2015 System Administrator Guide Page 253 of 404