Video Background

i try to play mp4 file from assets manager, unfortunately i cant do it. nvidz1.mp4 it is file from assets manager of my apk what i want to run to play.
double slash " // " before file name or not, its dont give any result
but when i read file from url internet adress everything worked good
i just try to make videobackground for my apk with inserted in apk videofile
may be this possible without aix
Help Please