Implementations may relate to various aspects of modifying, or using, a coded bitstream, or to recovering {HEAD ~ watermarking information} from {TAIL ~ data} 
from
Implementations may relate to various aspects of modifying , or using , a coded bitstream , or to recovering { HEAD ~ watermarking information } from { TAIL ~ data }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL