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VHS to High Definition Blu-Ray Replication Discus Group has always
been involved with meeting and exceeding your audio visual needs.
Discus Group is now well positioned to continue to meet your media
needs and has the capability to deliver over 6 million Blu-Ray replication
units per month.
Cheap Blu-ray replication. Blu-ray discs require a whole new approach
to mastering as the pit sizes are now 40 microns opposed to DVD pit
sizes of 74 microns which translates into a 25 Gb capacity for Blu-ray
single sided single layer and 50 GB for Blu-ray single sided dual
Unlike DVD the copy protection system is much more robust with a new
system AACS being developed which has 2 encryption keys of 128 bit,
giving optimum protection for the contents of your Blu-Ray DVD.
||Up to 50Gb
||Up to 8.5Gb
||Specific Blu-Ray Format
with blue laser 405 nanometers
|- DVD player with red laser
- HD DVD Players
||Some Blu-ray players will read DVD
||Current DVD won't read HD DVD or Blu-Ray
||New structure 1 layer of 0.1mm and one layer
1.1mm pit size 0.32 micron
||2 layers of 0.6mm pit size 0.74 micron
||1920 x 1080
||720 x 450
Common questions asked about Blu-ray
What are the advantages of Blu-ray DVD?
Blu-ray brings high definition quality of image, much more superior
to DVD increasing from 720 x 576 for DVD to 1920 x 1080 for HD DVD.
A Blu-ray can contain up to 50 Gb (8 hours of video) compared to 8.5
Gb for a DVD
What is the image encoding and compression of Blu-Ray DVD and what
are the advantages?
Blu-Ray encoding and compression uses MPEG layer 2 and MPEG Layer
4 and VC1. For DVD only MPEG 2 is applicable.
What is the capacity of Blu-Ray DVD?
Single layer, single sided Blu-Ray DVD disc can hold up to 25GB or
4 hours of video
Dual layer, single sided Blu-Ray DVD disc can hold up to 50GB or 8
hours of video
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