[Mp4-tech] [Mp4][Video][H.264]

[Xu Ke]

Dear Experts,
I have some questions on the motion vector prediction of inter-prediction in the H.264/AVC.Would you mind make it clear to me?
The motion vector of inter-prediction should be able to address quarter-sample positions.However,since the coding of motion vectors is se(v),which is an integer number.Then,how to address quarter-sample position by the integer value? My understanding is,for example,motion vector=16 means pointing to 4 integer position while motion vector=17 means pointing to 4.25 factional position. Am I right?
Many thanks in advance! 
Best regards,
Xu Ke