ww12345 said:
It only plays in BD players, if I'm not mistaken...
Depends what he downloaded. But yes, no need to waste more discs if it means attempting AVHCD discs in standard DVD players.
Either way, it shouldn't be burning the .iso file to the disc as a file.
If "write image to disc" really was the method used (and not files/folders), I don't know why that would happen.