Burned DVD's not playing

Ok, so here's my problem. I burn a DVD. It comes out like usual and I go to put it into my DVD player connected to my TV. It says "Bad disc". The thing is, when I put it in my computer it plays fine. I've tried multiple different burning software. The thing is, I've used the same burning software, same type of disc, and same computer and burned DVD's that worked on my TV's DVD player before. But now it keeps saying bad disc, and I've tried about 6 times now with all types of different video data on the DVD to see if it was maybe a corrupt file or something.

You guys got any answers for me? It'd be much appreciated.

If the dvd's work in the computer then it isnt the burn at all .
I would check the dvd player something may have gone in it .

Are you using dvd-r discs....they are compatible with more players than the dvd+r. You could also try reloading your burning software.

I tried the DVD's on my friend's DVD player and they don't work, but the ones I made before used to work on his DVD player. Yes, I am using DVD-R discs, the same exact ones I used before and they used to work. Now they don't.

What is the model of the DVD player? you can look up most models here if it has a line through a type of dvd/cd it means that it cannot play it.