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Blu-ray Blu-ray
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From the beginning of high definition, MPO teams have made a commitment to new
formats. In 2008, MPO invested in an entire Blu-ray production chain. This makes
MPO the leading and only independent manufacturer in Europe to have a complete
Blu-ray manufacturing line from mastering to pressing.

In order to better support you in the realisation of your Blu-ray projects, and to
answer the main questions you may have on this format, we are delighted to offer
you this 10 questions Blu-ray guide.


1. Where does the name Blu-Ray?
2. What is the difference between DVD and Blu-Ray?
3. Why the images are better in BD than DVD?
4. Does the audio is better with Blu-Ray?
5. Why Blu-Ray is called interactive media?
6. Do you use the Blu-Ray region code?
7. What video compression formats can be used in the BD?
8. BD anti-piracy system
9. Blu-Ray Disc Logo

1. Where does the name “Blu-ray” come from?

The term Blu-ray refers to the blue laser used for this format, unlike the red laser
used for CDs and DVDs. The “e” was removed from “blue” for the trademark. The
full name of the new format is “Blu-ray Disc”, often abbreviated to BD. There are
two Blu-ray formats:

• BD 25 ( single layer)
• BD 50 ( double layer)

2. What is the difference between a DVD and a Blu-ray?

The main difference lies with the laser which records information: the laser used for
DVDs is red, while that used for BD is blue. Below is a table comparing the 2
formats :

3. Why are images better in BD than DVD?

Because the image resolution is better with Blu-ray the resolution is 1920 x 1080,
where as on DVD, it is 720 x 576.

4. Is audio better with Blu- ray?

Of course! Blu- ray can handle up to 32 audio flows, ranging from stereo to multi-
channel 7.1 surround. With DVD, audio is Dolby Surround 5.1.

5. Why is Blu-ray called “interactive”?

With de Blu-ray, you can consult contextual menus without stopping the film, that
you are currently watching, and then choose new viewing options, or download
interactive content directly from internet (sub titles, director’s commentary, etc…).

6. Does Blu-ray use region codes?

Yes, Blu-ray can be assigned region codes, but this is not mandatory. It is the
publisher who decides whether to assign a zone to a Blu-ray title.

3 zones have been defined:

Zone A: The Americas, Korea, Japan, South East Asia
Zone B: Europe, Middle East, Africa, Australia, New Zealand
Zone C: Russia, India, China, rest of the world.

7. What video compression formats are used for BD?

Compression codec used for Blu-ray are: MPEG-2, MPEG-4 AVC, and VC-1

8. Is there anti-copy protection for BD?

There are three anti-copy protections for Blu-ray:

- AACS protection ( Advences Access Content System).
- BD-Rom Mark protection. Both are mandatory
- BD + protection being optional.

9. And what if I want to use the Blu-ray Disc Logo on my products?

You need to get a licence from the Blu-ray Disc Association. For more information: 10. What are the manufacturing stages of a Blu-ray disc at MPO? Once you have sent drive to MPO, as well as your AACS contract number, data will be tested (pre- mastering) before creating a master. Some pressed Blu-ray may be sent to you for proofing. After you have given your agreement to these samples, Blu-ray will be pressed, packaged in specific cases and sent to the desired addresses.

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