zvbi -- Raw VBI, Teletext and Closed Caption decoding library<hr>
<a href="http://zapping.sourceforge.net/ZVBI/index.html">http://zapping.sourceforge.net/ZVBI/index.html</a><hr>
ZVBI provides functions to capture and decode VBI data. The vertical
blanking interval (VBI) is an interval in a television signal that
temporarily suspends transmission of the signal for the electron gun to
move back up to the first line of the television screen to trace the next
screen field. The vertical blanking interval can be used to carry data,
since anything sent during the VBI would naturally not be displayed;
various test signals, closed captioning, and other digital data can be
sent during this time period.
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