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The Closed Captioning controls are as follows:
Enable CC:
check this box to enable Closed-Captioning insertion. Closed Captions are
inserted in the video elementary stream, as per ATSC A/72. Both CEA-608 and
CEA-708 captions are supported.
CC Source:
this controls where the encoder extracts closed captions from. As depicted
below, this field may or may not be editable, depending on the video input settings, input
resolution and input source. The options are:
o
CEA-608 Line 21
: this option can only be used for SD inputs. The encoder will
extract all the CEA-608 information from both fields of Line 21, if present.
o
SMPTE-334 VANC
: this option can only be used for SDI inputs. The encoder
will expect closed-captioning information in the VANC. Both CEA-608 and
CEA-708 modes are supported (and automatically detected).
Note that if
Video Input Settings
is set to
Auto Detected
, the encoder will comply with the
CC
Source
if possible, but may fall back to another setting depending on the input signal. For
example, if
CC Source
is set to
CEA-608 Line 21
and the encoder detects an HD signal, it will
fall back to
SMPTE-334 VANC
. Conversely, if it is set to
SMPTE-334 VANC
and it detects a
composite signal, it will fall back to
CEA-608 Line 21
if that composite signal is NTSC, or turn
off CC if that composite signal is PAL.
Active Format Description
The IP360 can extract Active Format Description (AFD) information from the incoming video
signal and insert it in the compressed bitstream. AFD information can be extracted from the
following sources:
Closed-Captioning Disabled
Input Source: SD-SDI
Input Resolution: SD
or
Video Input Settings: Auto Detected
Input Source: Composite
Input Resolution: SD
Input Source: HD-SDI or 3G-SDI
Input Resolution: HD