I have burned over 50 DVD slide shows and movies.
So far they seem to work on just about anything.
I have used + and - DVD media.
I ran across one piece of software (DVD X Copy) that would not work on a Toshiba or Sony DVD set-top player. I downloaded an update and then it worked OK.
You first need to know if the DVD media is the problem or your player is the problem.
Try the DVD on a computer DVD reader.
Try the DVD on a friends set-top DVD player.
I have been trying to tranfer some movies and video clips to DVD from my computer to view on my TV .... I have Roxio 6 for software .... In all attempts so far , I can not get anything to play on my home theater DVD player .... I have tried DVD+R and DVD-R ... What am I doing wrong ... I can view the list of files on the disc from the HT dvd player , but NO Play ...