Cobalt Co9992-4ENC-4K-HEVC Software-Defined Broadcast Encoder - Manual (Page 51)

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
SMPTE-334 708 Only: the encoder will accept only EIA-708 captions on DID
0x161, SDID 0x101, and will discard any EIA-608 captions received on DID 0x161,
SDID 0x102.

SMPTE-334 608 Only: the encoder will accept only EIA-608 captions on DID
0x161, SDID 0x102, and will discard any EIA-708 captions received on DID 0x161,
SDID 0x101.
Active Format Description
The 9992-ENC extracts Active Format Description (AFD) information from the incoming video
signal and insert into the compressed bit stream. It can be extracted from the following sources:

For SDI signals, AFD information can be present in the VANC as per SMPTE-2016-3.
This is the primary way of conveying AFD information on a professional video feed.

For SD signals (either from Composite or SD-SDI sources), AFD information can be
synthesized from Wide Screen Signaling (WSS) data present in the VBI (line 20 for
NTSC signals, line 23 for PAL signals).

The 9992-ENC has the option of inserting a user-defined AFD code (instead of receiving
it from the video input).
The AFD controls are as follows:

Enable AFD: Check this box to enable AFD extraction and insertion. AFD is inserted in
the video elementary stream as per ATSC A/72 and ETSI TS 101 154.

AFD Source: Selects the input source of AFD information.
The options are:
o Line 20 WSS/Line 23 WSS: This option causes the encoder to synthesize AFD
information from WSS. It is used only if the input resolution is SD, otherwise the
encoder falls back to SMPTE-2016. It will be displayed as Line 20 for NTSC and
Line 23 for PAL. For PAL inputs, the conversion follows ETSI TS 101 154
Appendix B.4.
o SMPTE - 2016-3 VANC: This option causes the encoder to extract AFD from the
VANC.
o Manual AFD Selection : This option allows the user to specify a fixed AFD code
to be inserted. Any AFD information received from the input is ignored. This