pub const WIRE_VIDEO: u8 = 0x04;Expand description
Wire tag of an encoded video frame: a type byte whose low nibble is the frame kind and
whose high nibble is the codec’s Codec::wire_id, then u16 frame id, u16 y (the
frame’s top row, 0), u16 width, u16 height, u16 reference (the frame it predicts
from, its own id where it names none), and the codec’s own bitstream.