Blu-ray vs. HD DVD what is the best for you ?

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High Definition Density Digital Versatile Video Disc (HD DVD) is discontinued high density optical disc format for storing data and playback of high definition video.

Blu-ray or Blu-ray Disc (BD)  digital optical disc data storage format it was designed to supersede DVD format -in that it is capable of storing high-definition – ultra high definition video resolution (2160p)



Storage Capacity Blu-ray
25 GB (single layer), 50 GB (double layer), 100/128 GB (BDXL)
15 GB (single layer), 30 GB (double layer)
Laser wavelength 405 nm (blue-violet laser) 405 nm (blue-violet laser)
Numerical Aperture 0.85 0.65
Maximum Bitrate (Raw data) 53.95 Mbit/s 36.55 Mbit/s
Encoding MPEG-2, MPEG-4 AVC (H.264), and VC-1 VC-1, H.264, and MPEG-2
Maximum Bitrate (Audio+Video) 48 Mbit/s 30.24 Mbit/s
Maximum Bitrate (Video) 40 Mbit/s 29.4 Mbit/s
Interactivity Blu-Ray Disc Java HDi Interactive Format
Maximum video resolution 1080p High Definition TV 1920×1080 24/25/30p or 50/60i HDTV
Region Code 3 Regions Region free
Hardcoating of disc Mandatory Optional
Content protection system AACS-128bit / BD+ AACS-128bit
Mandatory video codecs (H.264) / VC-1 / MPEG-2 MPEG-4 AVC (H.264) / VC-1 / MPEG-2
Dolby Digital audio codec Mandatory @ 640 kbit/s Mandatory
DTS audio codec Mandatory @ 1.5 Mbit/s Mandatory
Dolby Digital Plus audio codec Optional @ 1.7 Mbit/s Mandatory
DTS-HD High Resolution audio codec Optional @ 6.0 Mbit/s Optional
Linear PCM audio codec Mandatory Mandatory
Dolby TrueHD audio codec Optional Mandatory
DTS-HD Master audio codec Optional Optional
Video Playback Time (SD with MPEG2 at 5 Mbit/s) 22.2 hours 13.3 hours
Video Playback Time (HD with MPEG2 at 20 Mbit/s) 5.6 hours 3.3 hours
Video Playback Time (HD with AVC or VC-1 at 13 Mbit/s) 8.5 hours 5.1 hours


In optics numerical aperture (NA) of optical system is dimensionless number that characterizes range of angles over which system can accept or emit light.

so Blu-ray have better value than HD DVD

also a lot of bitrate that the Blu-ray can handle than HD DVD

if you have to chose an encode you better pick the Blu-ray disc encode




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