DVD players can be very 'picky' with regard 'Burned' discs.
Nothing wrong with the disk.
This is due to the many 'chip set' variations with the various brand and qualities of player.
The manual for your machine should elucidate exactly which discs it will or not play.
It is said and I certainly have proved the more 'High-end'[How I hate the phrase] the device the fussier they get.
I do various presentations with my own burned CD/DVD's and have to accommodate others from group members and that 'cheapo' Phillips from ASDA will play them all.
Last year on a cruise I was invited to do a presentation of a previous cruise on the same vessel and I took along my 'Home burned'
I had my doubts about the ability to run the show on the ships sophisticated broadcast quality set up.
When I took it to the Techie- and expressed my fears- that's OK he said digging out and plugging up the $50 WalMart player this plays anything.