selecting {TAIL ~ one or more transport packets} of said one or more transport streams for {HEAD ~ output} in a remultiplexed transport stream, 
selecting { TAIL ~ one or more transport packets } of said one or more transport streams for { HEAD ~ output } in a remultiplexed transport stream ,
OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH