VideoAFDMeta

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