I have an avi movie and I use nero xpress 2 to burn it into dvd. I finished burning it, but somehow, I can only watch chapters 8 and above. With Powerdvd in my pc, I can perfectly watch all chapters. I again, try it on five of my friends and cousin dvd player and it can only watch the same amount as I tried on my dvd player. Is it the dvd-r or is it the dvd players? Or is there are a method way I can use to burn it correctly?

All the dvd player I tried so far that can't watch all chapters are:
Apex-500A
Apex-1000
Sony (forgot what model)

most of my friends have the Sony model and Apex 500A.
I also the the Apex-500A.