Grass Valley XG Vertigo Configuration Guide v.5.0 User Manual
Page 94
Vertigo XG Configuration Guide
5-39
Dashboard - Vertigo XG’s Local Configuration Software
V
ANC
O
UTPUT
•
G
ENERATED
VANC: When selected, it indicates that Vertigo XG is operating in
generated VANC output (This setting supersedes the VBI Passthrough mode).
Vertigo XG generates the VANC using selective passthrough of some VBI lines
from Video In or from Clips (in NTSC and PAL mode only for clips), selected
ancillary data packets are also generated for CDPs and AFD codes and
inserted into some VANC lines, and some ancillary data packets are passed
through from Video IN to the corresponding VANC output line.
•
A
NCILLARY
CDP L
INE
: In generated VANC mode, this property specifies which
VANC line should carry caption distribution packets (CDP). If the line specified
is outside the valid range (same range as for Passthrough lines except in
NTSC mode where line 6 is not permissible since it is only available on Field2),
then CDPs will not be managed by Vertigo XG. Use -1 to disable CDP
processing (any line out of range will disable the processing, but using a
negative value avoids logging it as an error). Note that CDP is frame based
and will only be inserted in the first field of each frame. Also note that even if
the source for the captions is a “line21” CEA-606 stream, Vertigo XG will create
CDP packets with only the CEA-608 compatibility bytes and if no caption
stream is available, Vertigo XG will create empty CDP packets.
•
A
NCILLARY
D
OLBY
L
INE
: This feature is not yet supported by Vertigo XG and
apart from range checks, any number specified will be ignored.
•
A
NCILLARY
AFD L
INE
: Specifies the line of the VANC on which AFD (active
format descriptor) information is inserted.
•
A
NCILLARY
SDP L
INE
: Specifies the line of the VANC on which SDP are
inserted.
•
L
INE
21 C
APTIONS
: When selected and Vertigo XG’s output resolution is NTSC,
tis specifies that Vertigo XG should extract the CEA-608 caption stream and
encode it on line 21(field1 and field2). If no caption stream exists, then the lines
will not be generated. Note that if there is a field 2 CEA-608 caption but no field
1 captions, the Vertigo XG generates an “empty” field 1 CEA-608 caption with
only “line21” clock run-in (SMPTE requirement).
V
ANC
P
ROCESSING
AFD processing is enabled when the V
ANC
O
UTPUT
section’s G
ENERATED
VANC
option is enabled and the A
NCILLARY
AFD L
INE
setting is valid line number. Vertigo
XG must insert an AFD ancillary data packet into the VANC.
•
V
IDEO
I
N
A: U
PCONVERT
CEA-608
TO
CEA-708: When enabled, this parameter
converts the CEA-608 (Line 21) closed caption data on Video A input into
native CEA-708, which is required for digital television broadcast.
•
V
IDEO
I
N
B: U
PCONVERT
CEA-608
TO
CEA-708: When enabled, this parameter
converts the CEA-608 (Line 21) closed caption data on Video B input into
native CEA-708, which is required for digital television broadcast.
•
D
EFAULT
AFD V
ALUE
: Vertigo XG inserts the D
EFAULT
AFD V
ALUE
into an AFD
ancillary data packet under 2 conditions. The first is if Vertigo XG cannot find
any AFD values within the specified source (videoin or clip). It will substitute
the D
EFAULT
AFD V
ALUE
instead. The second case is if you selected the
I
NITIAL
AFD S
OURCE
to be V
ALUE
and selected D
EFAULT
from the drop-down
box.