Blu-ray (Blu-ray Disc or BD) is a digital optical disc data storage format designed to supersede the DVD format. It was invented and developed in 2005 and released worldwide on June 20, 2006, capable of storing several hours of high-definition video (HDTV 720p and 1080p). The main application of Blu-ray is as a medium for video material such as feature films and for the physical distribution of vi
![Blu-ray - Wikipedia](https://cdn-ak-scissors.b.st-hatena.com/image/square/8b9504cc4142facff4453694b4054f5fd945b4ad/height=288;version=1;width=512/https%3A%2F%2Fupload.wikimedia.org%2Fwikipedia%2Fcommons%2Fthumb%2F1%2F14%2FBlu-ray_Disc.svg%2F1200px-Blu-ray_Disc.svg.png)