The last type of disc that I want to cover briefly is the Blu-Ray disc. It is named for the blue laser that is used to read it as compared to the red laser used for CD and DVD media. This change in the laser color or frequency is important because it allows more information to be stored on Blu-Ray media. A typical single-layer Blu-Ray disc can hold a whopping 25GB of information. This super-sized capacity makes it perfect for the requirements of high definition video. Just like CDs and DVDs, Blu-Ray discs (BDs) have a specific structure for the storage and organization of video content. These discs can be played in Blu-Ray players, computers with BD drives, and Playstation video game systems.
Although somewhat slow to gain popularity due to competition with the HD DVD format, Blu-Ray is now the disc standard for high definition video. Increasing numbers of commercial movie titles are now available in Blu-Ray. And, just like CD and DVDs, a recordable version of the Blu-Ray disc allows consumers to create their own high definition movies.
So, what’s next?
These days, technology seems to change overnight. The trend in audio and video storage seems to be headed towards digital files and devices that can store vast amounts of this type of media. I once thought that CD’s would remain the standard for audio storage and playback, but the iPod and similar devices have changed that concept forever. The same holds true for video. Instead of owning physical discs, we can stream movies and TV shows from sites like iTunes, Netflix or Hulu. Personal video has found a home in places like YouTube, Vimeo and others. Online storage may soon replace our DVD and Blu-Ray libraries.
While all these choices and changes may make your head spin, the reassuring news is that once you move your analog content to digital format, you can easily convert your disc media to digital files or vice versa. So you decide; build your personal disc library or store your stuff in the Cloud. Either way, you’re covered.