zvbi

Vertical Blanking Interval (VBI) utilities

Description

Television broadcasts use the VBI to transmit text such as closed captioning (NTSC), Teletext (PAL/SECAM), and now Intercast and the ATVEC Internet television encodings. The zvbi library is used to capture and decode raw VBI data.

This package contains the following utilities:

* zvbid, a proxy for VBI devices. It forwards VBI data streams to one or

more connected clients and manages channel change requests.

* zvbi-atsc-cc, a command-line utility that captures ATSC TV transmissions

using a Linux DVB device and decodes the enclosed Closed Caption data.

It can record both NTSC caption (EIA 608-B) and DTVCC caption (CEA 708-C).

* zvbi-chains, a wrapper which executes the VBI application given on the

command line while overloading several C library calls so that the

application can be forced to access VBI devices via the VBI proxy instead

of device files directly.

* zvbi-ntsc-cc, a command-line utility for decoding and capturing closed

captioning (CC) for NTSC and webtv.

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Homepage

https://github.com/zapping-vbi/zvbi

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