The RD-70 AFD implementation preserves the native AFD code from the video elementary
stream and is inserted into the SDI ancillary data output on DID/SDID 0x4105. The SDI
output is not modified in anyway based upon this data. SDI line number for AFD carriage is
configurable via the VBI tab. The DID/SDID, AFD code, and aspect ratio flag can be seen in
the VBI Output table via the VBI tab.