Avi file writing in Nero to view in DVD players

Hello Sir

I have write .avi movie files as DATA DVD in Nero 7. One movie was completely shown the other was not working. But it shown the list 2 movies are present. If i press the 2nd movie it working for 5 to 10 minutes and then come again to the 1st film.

can any one solve this

I don't know how to write movies in DVD Disc [.avi] formats. Can i write 2 or more movies in a DVD. Please explain.

thanks and regards
r. dilli kumar