Actually, Blu-rays are supposed to have an improved chemical formulation that resists scratches/damage compared to CD and DVD media. https://en.wikipedia.org/w

Actually, Blu-rays are supposed to have an improved chemical formulation that resists scratches/damage compared to CD and DVD media. https://en.wikipedia.org/wiki/Blu-ray#Hard-coating_technology https://en.wikipedia.org/wiki/Blu-ray#Hard-coating_technolog... Audio on scratched CDs can sometimes be cleanly ripped and repaired with the cdparanoia program. I don't know anything that does this with DVDs. https://www.xiph.org/paranoia/ https://www.xiph.org/paranoia/ CDs and DVDs can also be refinished by equipment that grinds down and polishes the plastic, assuming the data layer is intact beneath it. This cannot be done with Blu-ray media, because of the altered surface chemistry.