Newbie here, I have been making backup copies of most of my purchased dvds. So I ussually do not watch them more then a few minutes to check and see if they play ok. Well I actually started to watch a backup dvd and after approx. 30 minutes the screen starts some pixel splotching and picture jumping and then finally the screen will freeze. Well I was curious so I started watching my other backups, same problem. I started to record backups on a different burner. I changed media over 4 to 5 different brands Sony, maxwell, HP, and staples. No changes. I have 4 diffent dvd players all different brands all the same results. My 2 other friends who record backups also have never had any problems and they use the same media. When these errors occur I can take the dvd out of the current player and play in another dvd player for about 20 to 30 minutes before the errors start to happen again. I believe that is the key to the problem, as the dvd heats up or dvd player heats up it begins to have errors. Not on any pacticular spot of the the recording just when the heat begins to cause the errors. Any idea on what I can do?