Trying to burn some of my own video and having issues

So, up until recently, I was able to burn dvd's fine. I try and burn a video and it burns fine, but when I put it into a dvd player, it will not play. For example, I tried playing it in both an xbox360 a PS3 and a regular dvd player, and it's almost like it can't read what is on the disc. Any ideas as to what could be causing this?

 

I tried copying one of my dvd's the other day as well, and the copy was blank when I put it into a dvd player. But it played on my computer just fine.

 

The more that I mess around with it, I think it's just .iso images that I can't burn anymore. Seems like it might be a setting somewhere, or maybe a program that I am running is conflicting with the software?

 

I've tried Nero and ImgBurn. I used DVDshrink to try and copy.