My question is; why won't my dvd player play certain backed up movies, but will play in my computer? I burn only on dvd rw's and I use several copying software, (X,roxio,nero and shrink). I can reburn the movie by using another program and sometimes it will play in my dvd player. I have made 2 copies, the first one will play, the second will not. I have mixed up the blank dvd's. I clean the laser lens every week. Every successful backup dvd will play in my computer. Any suggestions?