Data Identified
Secondary Data identification (if type 2) or Data block number (if type 1)
Which channel (luminance or chrominance) the ancillary data is located. 0 if content is SD or stored in the luminance channel (default). 1 if HD and stored in the chrominance channel.
The checksum of the ADF
The User data
The amount of user data
The field where the ancillary data is located
The line on which the ancillary data is located (max 11bit). There are two special values: 0x7ff if no line is specified (default), 0x7fe to specify the ancillary data is on any valid line before active video
Parent #GstMeta
The location of the ancillary data packet in a SDI raster relative to the start of active video (max 12bits). A value of 0 means the ADF of the ancillary packet starts immediately following SAV. There are 3 special values: 0xfff: No specified location (default), 0xffe: within HANC data space, 0xffd: within the ancillary data space located between SAV and EAV
#GstMeta for carrying SMPTE-291M Ancillary data. Note that all the ADF fields (@DID to @checksum) are 10bit values with parity/non-parity high-bits set.