android - application displaying videos

how do i display videos retrieved from resources in my android application ?

MediaPlayer mp = new MediaPlayer();
mp = MediaPlayer.create(context, R.raw.vid);
mp.start();

i have placed a vid.3gp file in my res/raw folder..

i am getting NullPointerException.. what changes do i need to make

why so??

do we need something called as Surface Holder or something similar ?

using the MediaPlayer you should be able to play video