Backing up my dvd's and i'm getting about 20% playable issue. They will all play on my sony dvd player but not on my samsung. Yes, the media is fine (takes both + and - r)so is this just a samsung issue (would seem weird that it would play some and not others with the same media and burner) or could it be a .img .iso issue? I've made them into iso's and image files and then burn image to disc with nero. Has anybody heard of discs not playing because of the type of container? I used to use magic dvd and when I used that they worked every single time...switched because I wanted image files to mount.