Also, {HEAD ~ the present invention} reduces {TAIL ~ the conversion time} by structuring the bit streams into a GOP 
Also , { HEAD ~ the present invention } reduces { TAIL ~ the conversion time } by structuring the bit streams into a GOP
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH