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Blu-ray vs HD-DVD vs DVD

 

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October 17th, 2006

Blu-ray vs HD-DVD vs DVD

What's the difference between Blu-ray, HD-DVD and DVD?  Below I've compiled a table of the main differences.  None of this will help you choose what to buy, but it gives you some technical knowledge to keep most salespeople at bay.

Parameter	Blu-ray	HD-DVD	DVD
Capacity	25GB (single-layer) 50GB (dual-layer)	15GB (single-layer) 30GB (dual-layer)	4.7GB (single-layer) 8.5GB (dual-layer)
Laser wavelength	405nm (blue)	405nm (blue)	650nm (red)
Protection layer	0.1mm	0.6mm	0.6mm
Hard coating	Yes	No	No
Track pitch	0.32µm	0.40µm	0.74µm
Data transfer rate	36.0Mbps (1x)	36.5Mbps (1x)	11.08Mbps (1x)
Video resolution (max)	1920×1080 (1080p) HDTV	1920×1080 (1080p) HDTV	720×480/720×576 (480i/576i) SDTV
Video codecs	MPEG-2 MPEG-4 AVC VC-1	MPEG-2 MPEG-4 AVC VC-1	MPEG-2
Audio codecs	Linear PCM Dolby Digital Dolby Digital Plus Dolby TrueHD DTS Digital Surround DTS-HD	Linear PCM Dolby Digital Dolby Digital Plus Dolby TrueHD DTS Digital Surround DTS-HD	Linear PCM Dolby Digital DTS Digital Surround
Content protection	Advanced Access Content System (AACS-128bit)	Advanced Access Content System (AACS-128bit)	CSS 40-bit

Technorati Tags: Blu-ray, HD-DVD, DVD

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This entry was posted on Tuesday, October 17th, 2006 at 13:46 and is filed under Kit!. You can follow any responses to this entry through the RSS 2.0 feed. Responses are currently closed, but you can trackback from your own site.

2 Responses to “Blu-ray vs. HD-DVD vs. DVD”

1. marblecake.org.uk » Blog Archive » Another Fascinating Post Says:
   October 17th, 2006 at 14:35

   [...] For my own info as much as anything else, there’s a very handy table comparing Blu-ray, HD-DVD & DVD formats at the PC Doctor site. Blu-ray & HD-DVD are new formats supposedly to replace the bog standard DVD - think of the VHS & Betamax wars of the 70s/80s. I still see veterans stumbling about even now. [...]

2. Handy Blu Ray vs HD DVD and chart « Twilight Town Says:
   October 30th, 2006 at 11:24

   [...] Webfooted posted a handy little link over at her blog marblecake.org.uk to a site that shows the differences between the Blu Ray disc, HD DVD disc and DVD disc. You can view it here, thanks webfooted. [...]