Everyone knows optical disc formats like CD and DVD, but history is littered with other attempts to make shiny round discs ...

Stream from 300+ apps and entertainment services PlayStation Now : Stream and enjoy PlayStation 3 games instantly Full HD 1080p Blu-ray Disc playback & DVD upscaling Easy access to apps and ...

The disc is covered with a protective ... and the DVD is not worn out by the playing process. Because DVD players are backward compatible to existing technologies, they can play CD and CD-ROM ...

The best 4K Blu-ray players deliver the ultimate picture quality ... and get stunning box art and behind-the-scenes extras that come on the disc. It may not be a very vibrant market now ...