CEA-608 as byte pairs. Note that
this format is not recommended since is does not specify to
which field the caption comes from and therefore assumes
it comes from the first field (and that there is no information
on the second field). Use GST_VIDEO_CAPTION_TYPE_CEA708_RAW
if you wish to store CEA-608 from two fields and prefix each byte pair
with 0xFC for the first field and 0xFD for the second field.
CEA-608 as byte triplets as defined in SMPTE S334-1 Annex A. The second and third byte of the byte triplet is the raw CEA608 data, the first byte is a bitfield: The top/7th bit is 0 for the second field, 1 for the first field, bit 6 and 5 are 0 and bits 4 to 0 are a 5 bit unsigned integer that represents the line offset relative to the base-line of the original image format (line 9 for 525-line field 1, line 272 for 525-line field 2, line 5 for 625-line field 1 and line 318 for 625-line field 2).
CEA-708 (and optionally CEA-608) in a CDP (Caption Distribution Packet) defined by SMPTE S-334-2. Contains the whole CDP (starting with 0x9669).
CEA-708 as cc_data byte triplets. They can also contain 608-in-708 and the first byte of each triplet has to be inspected for detecting the type.
Unknown type of CC
The various known types of Closed Caption (CC).