ANSI/SCTE 21 2012
This document defines a standard for the carriage of Vertical Blanking Interval (VBI) services in MPEG-2 compliant bitstreams constructed in accordance with ISO/IEC 13818-2. The approach builds upon a data structure defined in ATSC A/53 Part 4 (Digital Television Standard: Part 4 ? MPEG-2 Video System Characteristics), and is designed to be backwards-compatible with that method.