DVD movies

After successfully copying DVD's and playing them back on my DVD player, I discovered after repeated plays, the DVD's does't play correctly. It bounces back to the begging or it freezes.

 

could be due to the blank dvd ur using. check out the guidelines on some of the preferred 'brand'

 

I'm new and don't understand what you mean by blank DVD.....HELP

 

Where do I go to locate the list of preferred brand