Here, {HEAD ~ the predetermined time} represents the time required for {TAIL ~ a picture} to be decoded and displayed, without any breakage 
Here , { HEAD ~ the predetermined time } represents the time required for { TAIL ~ a picture } to be decoded and displayed , without any breakage
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH