Blu-Ray & HD DVDSpecs

Blu-Ray & HD DVD Specs

Disc	Blu-Ray	HD DVD	DVD
Laser wavelength	405 Nanometers	405 Nanometers	650 Nanometers
Numerical aperture	0.85	0.65	0.6
Storage capacity single layer	25 GB	15 GB	4.7 GB
Storage capacity dual layer	50 GB	30 GB	8.5 GB
Playback time on two layers (Standard Definition)	23 hours	13.8 hours	4 hours
Playback time on two layers (High Definition)	9 hours	5.4 hours	-
Video codecs	MPEG-4 AVC (H.264) / VC-1 / MPEG-2	MPEG-4 AVC (H.264) / VC-1 / MPEG-2	MPEG-2
Audio codecs lossless (mandatory)	Linear PCM	Linear PCM / TRUE HD[2-ch]+	Linear PCM[2ch]
Audio codecs lossless (optional)	TRUE HD, DTS HD	TRUE HD, DTS HD	N/A
Audio codecs lossy (mandatory)	Dolby Digital / DTS / MPEG Audio	Dolby Digital Plus / Dolby Digital / DTS / MPEG Audio	Dolby Digital / MPEG Audio (Europe)
Maximum data transfer rate	54.0 Mbit/s	36.55 Mbit/s	10.08 Mbit/s
Maximum video rate	40.0 Mbit/s	29.4 Mbit/s	9.8 Mbit/s
Secondary video decoder (PIP)	Optional	Required	N/A
Video systems (maximum)	1920x1080 50/60 Progressive HDTV	1920x1080 50/60 Progressive HDTV	720x480 and 720x576 50/60 Progressive SDTV
Content protection system	Advanced Access Content System (AACS-128bit)	Advanced Access Content System (AACS-128bit)	CSS 40-bit
Single Layer Prices (via Newegg)	$11.99 ($0.47 per Gb) 2x	$8.99 ($0.60 per Gb) 1x	-
Protective Hardcoating	Required	Optional	Optional

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