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Home >
Electronics Tutorials > Online
Blu-ray
Tutorial > What is the
difference between DVD and Blu-ray? |
Online Blu-ray Tutorial
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What is the
difference between DVD and Blu-ray?
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Parameters |
DVD |
Blu-ray |
| Storage capacity
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4.7GB
(single-layer)
8.5GB (dual-layer)
|
25GB
(single-layer)
50GB (dual-layer)
|
| Laser wavelength
|
650nm
(red laser) |
405nm
(blue laser) |
| Numerical
aperture (NA) |
0.60
|
0.85
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Disc diameter
Disc thickness
|
120mm
1.2mm
|
120mm
1.2mm
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Protection layer
Hard coating
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0.6mm
No
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0.1mm
Yes
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Track pitch
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0.74µm
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0.32µm
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Data transfer
rate (data)
Data transfer rate (video/audio)
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11.08Mbps (1x)
10.08Mbps (<1x)
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36.0Mbps (1x)
54.0Mbps (1.5x)
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Video resolution
(max)
Video bit rate (max)
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720×480/720×576 (480i/576i)
9.8Mbps
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1920×1080 (1080p)
40.0Mbps
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| Video codecs
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MPEG-2
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-
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MPEG-2
MPEG-4 AVC
SMPTE VC-1
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| Audio codecs
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Linear PCM
Dolby Digital
DTS Digital Surround
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-
-
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Linear PCM
Dolby Digital
Dolby Digital Plus
Dolby TrueHD
DTS Digital Surround
DTS-HD
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Interactivity
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DVD-Video
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BD-J
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