DVD and BluRay are distinct formats, with their own unique and different encoding, and DVD discs and BluRay discs are not the same thing. If you want to make a DVD, you have to record DVD encoding on a DVD disc. If you want to make a BluRay, you have to record BluRay encoding on a BluRay disc. BluRay can only be encoded onto a BluRay disc - it cannot be done on a DVD disc. The discs are not even read by the same type of lasers. A DVD disc would not even have the storage capacity to handle the BluRay encoded content even if it could be put on there.
