Hello friends for playing audio and video file you have to store your files somewhere, either in res/raw folder or in sdcard . So this post will help you to pushing your video files into sdcard.
Here is some steps..
1.Create you emulator with sdcard support.
2.Now if you are going to play video you can refer this code
3.Here is you myvideo.xml file.
4.Now time to add your video(here wildlife.3gp)in sd card ,so go through .
Window->showView->other
Here is screenshot of fileExplorer
5.At last push your file (.3gpfile)here
thats all enjoy your video
for any query mail me : bpsingh216@gmail.com
Be happy....