Grass Valley K2 AppCenter v.7.2 - Manual (Page 178)

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K2 AppCenter User Manual 05 April 2010
Chapter 12 Channel Ganging and Track Mapping
Figure 12-2. Track mapping with unique labels
If language groups are used
You can have multiple tracks and output channels with the same label. If multiple
tracks have the same label, AppCenter evaluates where to map the tracks as follows:
• An output channel’s primary and secondary output labels are considered together
as a “language group” when assigning an audio track for playout. If two channels
have the same primary label but have different secondary labels, then those
channels have different language groups. For example, a channel with labels FRE
+ GER is considered a different language group than a channel with labels FRE +
ENG.
• Each output channel, in order from first to last, is evaluated to determine if the label
or language group matches a labeled audio track in the clip.The first channel with
a label or language group that matches the track label plays that audio track. If the
clip has several audio tracks with the same label, the first matching output channel
plays the first audio track, the second matching output channel plays the second
audio track, and so on.
• The Play Silence box. If the AppCenter does not find a matching label or language
group for the output channels, and the Play Silence box has been checked in
Configuration Manager, the channel plays silence. Otherwise, if AppCenter finds
no match, the output channel plays the correspondingly numbered audio track.
The rest of this section describes this evaluation process in detail.
If the primary output alone is labeled
If the output routing channels are assigned primary labels, AppCenter evaluates the
labels to see if they match with the track labels in the clip as follows:
• If there are no secondary labels assigned, then the primary labels only are
evaluated.
• Labels are evaluated in numerical order, that is, from the first to last.
• After labels are evaluated in numerical order, the Play Silence check box is
evaluated to determine if it is checked or un-checked.
The following illustration shows an example of how AppCenter maps non-unique
labeled audio tracks to non-unique labeled output channels. In this example, the first
four output channels have primary output labels that do not match with any of the
track labels, so they are bypassed.
Clip
Tracks:
1. ENG-1
2. ENG-2
3. ENG-3
4. ENG-4
Audio Output Routing:
Play
Primary Secondary Silence
Output Ch1: ENG-3 [None]
Output Ch2: ENG-4 [None]
Output Ch3: ENG-1 [None]
Output Ch4: ENG-2 [None]