Active Format Description (AFD)
For details, see Table 6.14 Active Format in:
ATSC Digital Television Standard: Part 4 – MPEG-2 Video System Characteristics
https://www.atsc.org/wp-content/uploads/2015/03/a_53-Part-4-2009.pdf
and Active Format Description in Complete list of AFD codes
https://en.wikipedia.org/wiki/Active_Format_Description#Complete_list_of_AFD_codes
and SMPTE ST2016-1
#GstVideoAFDValue AFD value
0 for progressive or field 1 and 1 for field 2
parent #GstMeta
#GstVideoAFDSpec that applies to @afd
Active Format Description (AFD)
For details, see Table 6.14 Active Format in:
ATSC Digital Television Standard: Part 4 – MPEG-2 Video System Characteristics
https://www.atsc.org/wp-content/uploads/2015/03/a_53-Part-4-2009.pdf
and Active Format Description in Complete list of AFD codes
https://en.wikipedia.org/wiki/Active_Format_Description#Complete_list_of_AFD_codes
and SMPTE ST2016-1