Grass Valley iTX System v.2.6 - Manual (Page 156)

Configuring channels
• You use the Tolerance % setting to allow variation in the duration of media items iTX
can select to fill a gap. For example, when the tolerance setting is 10%, iTX can fill a
gap of 30 minutes with any evergreen media item having a duration of 27 to 30
minutes.
• Selecting Fixed Replace Time allows you to define the point at which iTX replaces
schedule events. In the Minutes box, you specify how long (5 minutes or more) before
the start time iTX replaces a schedule event.
• In the Window box, you select the number of the window (from 1 to 5) that the
specified search criteria is to apply to.
• In the Start and End boxes, you enter the start and end times of the selected window.
• You click Select Clips to open PinPoint and specify the search criteria for the selected
window. To avoid the repetition of a media item in an evergreen sequence, you should
ensure the search criteria results in a variety of media items with long, medium and
short durations.
• Selecting Advanced Replace allows you to define the point at which iTX replaces
schedule events that are not located on an iTX output server (e.g. an archive server). In
the Minutes box, you specify how long (5 minutes or more) before the start time iTX
replaces these events.
If the media file for a replaced schedule event becomes available before the start time of the
event, an operator may delete the evergreen sequence and restore the original schedule event.
Audio Mapping panel
Audio mapping involves selecting source audio tracks for up to 16 audio channels in the
channel output signal.
See the separate section "Configuring the audio output for a playout channel", page 202, for
instructions on using the Audio Mapping panel.
Advanced Aspect Ratio Control panel
As well as having different source formats (i.e. aspect ratios which may be 4:3 or 16:9),
different video clips may display frames with different active regions. By active region, we
mean the area of the video frame that contains the image.
With the Advanced ARC (Aspect Ratio Control) functionality, iTX can modify a video clip to fit
the aspect ratio of a playout channel in a particular way, depending on the combination of the
clip's source format and active region. It can also insert AFD (Active Format Description) data in
the output video signal – this describes the video aspect ratio and active region for televisions.
In the Advanced Aspect Ratio Control panel, you configure iTX to use the Advanced ARC
functionality:
• You select Enable AFD Insertion if you want iTX to insert AFD data in the output signal.
• Clicking Configure Mapping displays a dialog that enables you to specify how iTX
should play out video clips with different combinations of source format and active
region; also, what (if any) AFD value it should insert in each case. See later in this
section, "
• Using the Advanced Aspect Ratio Control – Mapping Configuration dialog", page 166,
for instructions on using this dialog.
March 2015 System Administrator Guide Page 156 of 404