Blu-Ray Disc Information
Here’s where it started.
Both Blu-ray and HD DVD players were made available to consumers in 2006.
About February 2008, Toshiba–then chairman company for the HD DVD Forum, abandoned the new HD DVD format and announced intentions to discontinue manufacturing HD DVD players or drives.
Blu-ray won the format war!
Frequently Asked Questions:
What does that mean in terms of listening or viewing hours?
It equates to the capacity of storing more than 9 hours of high-definition (HD) video or 23 hours of standard-definition (SD) video on a 50GB disc.
What is the viewing quality?
Blu-ray shows high-definition movies up to full HD 1080p resolution, whereas a DVD shows a standard-definition movie up to 480p resolution.
How does it work?
Larger capacity is achieved using Blu-ray with using a shorter wavelength laser instead of the larger red laser used on SD DVDs. This allows the BD to use smaller pits and lands than are used on SD DVDs
How much data can be stored on a Blu-Ray disc?
The Blu-ray format offers more than five times the storage capacity of the traditional DVD. A single-layer disc can hold 25GB, while a dual-player disc can hold 50GB of data.
• BD-25: This is a DVD specific feature outlining the disc structure as one single layer of information. The capacity of this disc is 25 GB, and it can hold up to four hours of video.
• BD-50: This is a DVD specific feature outlining the disc structure as two layers of information. The capacity of this disc is 50 GB, and it can hold up to nine hours of video.
Is BD authoring different than DVD authoring?
- DVD authoring allows you to put a variety of different programs on one disc, including video, PowerPoint presentations, still photographs, etc.
- With DVD, you can design and set up interactive menus to your preference, which allows for quick and easy navigation through the information on your DVD.
- Blu-ray Java titles do not have the notion of domains including root domain, title domain and chapter domains. The concept of a menu is not predefined.
- Blu-ray main menu and sub-menu block are not mapped to a specific title.
- DVD has a root menu containing its own video and audio.
- Blu-ray does not have a root menu. Your Main Menu will appear over all of your titles automatically, which is also true for sub-menus.
- DVD authoring does not require calculating how much memory your image takes up.
- Blu-ray titles have a fixed amount of memory for images.
- With DVD authoring, there is little or no unit testing required.
- Blu-ray authoring needs as much unit testing as possible.
- There are three stages to the Blu-ray authoring cycle.
- The Blu-ray specification allows for three different video codecs and several different audio codecs to be used.
- AACS (Advanced Access Content System) is the industry standard for content distribution and digital rights management. The goal of this technology was to restrict copying BD Optical Media. This standard was adopted in 2005 for HD, DVD and Blu-ray (BD).
- Region Coding: The Blu-ray specification allows for 3 key regions, which are A, B, and C–with the most critical delivery of assets being sent via Hard Drive, or Digital FTP delivery.
What format should my BD master be delivered in?
- Accepted Formats – BD-CMF Type A, or BD-CMF Type C- Sony-CMF folders only.
- BD-MV formatted masters are accepted but must be converted to BD-CMF format (fee required)
- BD-MV, BD-CMF A, or BD-CMF C folders must be provided on a BD-R or USB 2.0 drive. Submissions of USB 3.0 drives may delay processing.
What does BD mastering entail?
Mastering to specific replicator requirements is critical to the BD Authoring process. All requirements must be met before the final master is created. Talk with your MediaFast representative for specific requirements.
What format should my BD artwork be delivered in?
Adobe Illustrator (CMYK – Mac/Windows)
Adobe Photoshop (CMYK – Mac/Windows)
Here are a few more important benefits of using Blu-ray for your duplication and replication needs:
- Network / Intenet connectivity
- Improvement in disc coating as well as increased resistance to scratches and smudges
- Piracy protection via AACS (replicated Blu-Ray discs only)
- Resolution is increased of that of a DVD by six times with 7.1 channels of uncompressed audio
- New menu integration includes increase in interactivity