Improved Rackmount V-ANC Support | Streambox Inc
V-ANC

Streambox rackmount encoders now have improved support for capture, encoding, and transmission of vertical ancillary data, also known as V-ANC, by adding advanced mapping functions for easier integration with other systems. Ancillary data is non-video information such as closed captions and advertisement insertion triggers.

Streambox rackmount decoders can output vertical ancillary data information via HD-SDI but some downstream equipment might require data to be mapped to specific V-ANC lines. In this case, the new Streambox decoder, version 3.164.12, and new web UI allows users to assign a specific data type to a specific V-ANC line using packet identifier DID (Data IDentifier).

For example, in the screenshot below, Closed Captions (packet DID 161) are mapped to video line 9 and SCTE-104 events (packet DID 241) are mapped to line 13. Up to 3 different packet types can be assigned.

V-ANC Decoder Output

V-ANC Quick Setup Tutorial Video

Note: traditionally, DID (Data Identifier word) is represented as a hexadecimal number. The decoder will perform automatic V-ANC data placement if the DID is zero.

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