Re: Blu-ray...excuse my stupidity...
- From: Alan F <afiggatt1@xxxxxxxxxxxxxx>
- Date: Tue, 04 Sep 2007 14:27:54 GMT
Ar Q wrote:
"O000 O0000" <madamehallmark@xxxxxxxxx> wrote in message
What is the difference between blu-ray and dvd? does one need a special
player for blu-ray?TIA..J
Both are HD-DVD formats. And they are incompatible to each other. However,
there are newer players which support both format.
While Blu-Ray achieve the higher resolution of High Defintion thru hardware
advance (higher frenquecy lens pickup and higher density disk), HD-DVD use
old technology with new software. HD-DVD is basically old DVD technology
plus a compression algorithm to compress the higher resolution video.
Blu-Ray is a real thing while HD-DVD is fake...
You have some mis-conceptions about the HD-DVD format. It uses the
same blue laser with a 405 nm wavelength as Blu-Ray for a higher storage
density and capacity on the disk. HD-DVD uses a 0.6mm deep recording
layer, same as DVD for lower conversion costs in the manufacturing
plants. HD-DVD has a capacity of 15 GB single layer, 30 GB double layer.
Blu-Ray has a higher storage capacity of 25 GB single layer, 50 GB
double layer using a 0.1 mm deep writing layer. Blu-Ray has a higher
maximum bit rate.
Both formats support the same video codecs and the same audio codecs
with a different mix of optional/mandatory requirements between the two
for audio codecs. Both have DRM up the kazoo. Blu-Ray (disks are called
BD) and HD-DVD use different software and have different capabilities in
the interactivity end.
Getting pass all the format war garbage, both formats have excellent
picture and audio quality for movies. HD-DVD has lower upfront cost to
step up to from DVD, but has less growth potential because of it's
smaller capacity. Blu-Ray has higher upfront development and
manufacturing costs, but 50 GB disks will allow for more audio formats
and video content to be put on one disk. wikipedia entry on HD-DVD:
http://en.wikipedia.org/wiki/HD-DVD for details. I figure I will
probably buy a Blu-Ray player, but I'm waiting for prices to come down
and for the format standards to stabilize. If I wait long enough, maybe
get a dual format player at a reasonable price which fully supports both
The format war is hurting both camps badly and keeping sales down as
people stay on the sidelines not wanting to buy the losing format. If
the war goes on too long, the studios may push to downloading movies and
TV shows (well, for those who have the bandwidth). Downloading sounds
nice on the surface, but you know the studio will push for downloads to
have limited shelf life, maybe 3 days, so they can charge you all over
again if you want to watch the movie or TV series again or didn't watch
it the first time. And DRM overhead that makes the current crap look like a cakewalk.
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