Quick Look: How Does Blu-ray Compare to DVD?

Posted by cpapciak on 3-11-2012

With all of the new technology coming out all of the time, it can be difficult to keep up with the latest and greatest, and what the newest generation offers. Blu-ray is the latest available optical storage medium, similar to a DVD. The difference is that it uses a different laser wavelength (blue) instead of the red DVD laser. Blu-ray discs can hold 50gb on a dual layer disc, which is over 10 times the storage capacity of a standard DVD. Due to the larger storage space on these discs, Hollywood movie studios are able to release films in high definition complete with fully interactive menus, network integration, and all sorts of interactive bonus features. High definition televisions are quickly becoming more and more common throughout the country, which only further intensifies the Blu-ray market. Another useful feature with Blu-ray players is that they are backwards compatible with DVDs, so your can still fully enjoy your whole movie collection on one unit. In fact, most Blu-ray units come with DVD upscaling, to make your DVDs look even better on your high definition television. In addition to Blu-ray movies, you can also use Blu-ray discs as a storage medium to store digital photos, videos or audio. They are perfect for home video to DVD, slide scanning or film to DVD projects. Thanks to the greatly enhanced HD video and audio quality as well as the advanced interactivity and networking features, Blu-ray is a huge step forward in the home video experience.

Parameters Blu-ray DVD
Storage Capacity 25GB (single layer)
50GB (dual layer)
4.7GB (single layer)
8.5GB (dual layer)
Laser wavelength 405nm (blue laser) 650nm (red laser)
Disc Diameter
Disc Thickness
120mm
1.2mm
120mm
1.2mm
Protection layer
Hard Coating
0.1mm
Yes
0.6mm
No
Data transfer rate (data)
Data transfer rate (video/audio)
36.0Mbps
11.08Mbps
54.0Mbps
10.08Mbps
Video resolution (max)
Video bit rate (max)
1920×1080 (1080p)
40.0Mbps
720×480/720×576 (480i/576i)
9.8Mbps
Video codecs MPEG-2
MPEG-4 AVC
SMPTE VC-1
MPEG-2

Audio codecs Linear PCM
Dolby Digital
Dolby Digital Plus
Dolby TrueHD
DTS Digital Surround
DTS-HD
Linear PCM
Dolby Digital
DTS Surround Sound


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About cpapciak

As a blogger of DVD Your Memories, Chris is the most regular blogger, reviewer and coder for this site.

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