Grass Valley K2 Edge User Manual v.4.1 - Manual (Page 40)

K2 Edge User Manual - document version: 4.1 – Page 40
15.3.4 CEA-608
The following input sources are supported for extraction of the CEA-608 closed caption
service, in given order of priority:
Input source Condition
1 An STL subtitle rendered in CEA-608 format.
This input source can co-exist with the next #2 source.
2 CEA-608 XDS commands placed on the timeline of a Channel Composer template.
This input source can co-exist with the previous #1 source.
3 CEA-608 objects found embedded in VBI section of an incoming SDI stream in
NTSC broadcast format.
Main Player
4 CEA-608 objects created from CDP metadata as a result of cross conversion from
HD to SD format.
Main Player
15.4 The main Player
15.4.1 Introduction
In Channel Composer, Objects such as ‘Clip’, ‘Audio’ and ’Still’ use a Player to play out
content. Players can be used to control playout. Different actions can be defined. The default
is: Play. Players can be modified in the Object and Objects window.
One main Player can be active per Channel.
The main Player role has following properties:

The main Player has priority over other Players when resources are assigned.

If the main Player contains an embedded Closed Caption subtitle stream, this stream
will be played out. If other Clips contain subtitle streams, these streams will not be
played out. In other words, only the main Player’s subtitle stream will be played out.

The main Player is the source for the ATC (HD) or VITC (SD) timecode signal in the
SDI-output. Only one signal can be sent out, i.e. from the main Player.

If the main Player is a Live Player and this Player transfers VBI-data from the SDI-
input, this VBI-data will be transferred to SDI-out instead of any VBI-data generated
by the K2 Edge server. This means that VBI-data from the input such as subtitles and
teletext is passed to the output 'as is'.

The main Player role can be assigned at any point in time, but is only active if
between an In and Out Point.