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The purpose of this standard is to specify mapping of the extended video line data and the vertical ancillary data packets (VANC) present in the vertical blanking interval (VBI) space of the serial digital interface (SDI) into a 50 Mb/s digital interface format (DIF) structure defined in SMPTE 314M. Format of a VANC packet is defined in SMPTE 291M. Mapping of the extended video line data permits an increase of video aperture of 7.5 lines in the 525 system and an aperture increase of 9 lines in the 625 system. Mapping of VANC packets provides for carriage of metadata and data essence through the 50 Mb/s DV-based DIF stream structure.