I love physical media, and I have a large collection of both Blu-ray and 4K Blu-ray discs. It's obviously subjective, but what I've found myself enjoying the most from 4K discs is Dolby Atmos. Technology History Formats Features Hardware Begin 01 / 8 History In what year did the Blu-ray Disc format officially launch for consumers? If you're coming from streaming 4K to disc 4K, it's an illuminating experience. A 4K Blu-ray blows away a DVD in both picture and audio quality.