pub fn encode_anc_timecode(
tc: &Timecode,
binary_groups: [u8; 4],
) -> Smpte309mPacketExpand description
Encode a Timecode into a SMPTE 309M ANC packet.
binary_groups — 4 bytes of user binary group data (packed into words 4–7;
words 8–15 are zero-padded binary group bytes). Pass [0u8; 4] if unused.
The returned packet has DID=0x60, SDID=0x60, and 16 parity-protected
10-bit words encoding the timecode and binary group data.