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View Full Version : Blu-Ray and HD-DVD in a nutshell


mjmaskrey
18/Mar/06, 06:35 PM
You'll have heard the names a lot recently but you may not know too much about them, here's a brief summary without going too techie for you.

Sony has announced that they will be releasing the Blu-ray player in America in July, at a price for $1,000 USD, which Toshiba, the competitor who backs the HD DVD will be selling their player at $499.99 and $799.99 USD in March. The duel is about break out in this year's market for sure.

About the two standards:

What is a DVD?
The short form of "Digital Versatile Disc". Just like the "CD" (Compact Disc), it is one of the members from the "optical disc"
family, which uses laser to read the data recorded on the disc. A DVD is capable of storing 10 times of the volume of a CD.

What's different for the Next-Gen DVD?
Within the same size of the physical disc, the recordable volume has been largely improved. For HD, it will be 3 times, and for BD, it will be 5 times larger than the current DVD. It is capable of carrying more data and video, and will be protected from piracy by more technologies.

Why can the volume be enhanced?
It's because of the use of the laser with a shorter wavelength. The wavelength is like the thickness of the lead in a pencil. On the same note paper, a pencil with a thinner lead can write more contents on it for sure.

What's the difference between HD and BD?
The place for storing the data is different. HD stores the data on a layer which is 0.6 millimeter from the surface, while BD does that on a layer which is 0.1 millimeter from the surface. An HD player will not be able to play a Blu-ray disc, vice versa. *Note by Jeff: I remember reported a news that LG is making a player that will be compatible for both standards.

This sounds quite inconvenient. Which one is better?
On the record volume side, one layer can hold 15 Gigabytes (Digital Hi Vision Video for 1.5 - 2 hours) for HD, but 25 Gigabytes (Same 2 - 3 hours) for BD. HD is holding the idea that they can hold the same volume as the BD do with adding more layers, while BD insists on "better for massive production and manufacture technologies".

About the sales war between the two standards

Will them be sold in Japan?
Sony, Panasonic and Sharp is going to be selling a BD recorder/player. The price will be as high as 250,000 to 300,000 JPY ($2188 - $2542 USD). The player will only be able to play the disk recorded by itself, and cannot support the new BD soft released later. There is no reason to buy such a product.

On the HD DVD side, Toshiba will be releasing the player in March, and the recorder in June. Laptops powered by HD DVD will also be released in this Spring In US. While on the BD side, the Next-Gen game console "PlayStation 3" which will be able to play Blu-ray discs are postponed to November. Recorders/Players will also be released in this year.

How will the price be?
Korean Samsung will be releasing a BD player in America at the same 1K USD price with Sony. Pioneer is even going to price their BD product at $1,800 USD. It seems Toshiba is in the ascendant on the price part.

Which side will have more movie supplies?
According to the current share stats, BD takes up 74%, while HD takes up 46%. It is hard to predict the situation now.

Is the name "HDD Recorder" a wrong name?
HDD is the short form for "Hard Disk Drive". The "HD" from "HD DVD" means "Hi Definition". They are totally different. The max capacity of the current HDD recorders is up to 1 Terabyte. It will be able to store 128 hours of Hi Vision video. But, if you want to carry the video you recorded, you will still need to burn it onto a DVD. This is the down side of HDD recorders. But anyway, there may be some consumers who finally choose the HDD recorder before the war between the Next-Gen DVD standard ends.

:)

Killer 57
18/Mar/06, 06:41 PM
It failed o answere m question, "How will more disk space enhance my movie viewing experiance?

mjmaskrey
18/Mar/06, 06:43 PM
Basic answer to that...Hi Definition movies...so higher resolution footage. And if you HDMI it to a HDTV you should get perfect pixel to pixel sync.

Current DVD's are upscaled to HD so you lose some of the definition to the picture....if you check the quality on the Hi Definition demo discs it's absolutely amazing!

:)

Steve
18/Mar/06, 07:04 PM
And more disk space means more content can be added to a game, and with a quick disk transfer rate hardly no load screens. Some on games like GT 4 piss you off alot, load screens are a bugger.

Raide
18/Mar/06, 07:34 PM
I can see all the pros and cons of the HD-DVD and Blueray battle. It will just come down to which ever has the most people backing it and which way consumers want to go. I personally think HD-DVD will win because DVD is something people know and it is a proven technology. Blueray is something new and thus unproven as of yet.

The capacity on both discs sounds very good for films etc but I am unsure about games. Does this mean that because the storage is so much, developers will just cram more FMV cutscenes in everything, just to justify the cost. I can see RPG's being the best suited genre for Blueray/HD-DVD but I am unsure if titles like Fifa, Need for Speed etc will ever need the kind of size these are offering.

HD-DVD has a read/write speed of 36.5Mb/sec and Blueray is 36Mb/sec, which is very fast for optical media. Imagine if HD-DVDROM was full 15Gb per layer/30Gb dual/60Gb dual & double sided disc, developers could cut down the amount of compressing that they would have to do with their graphics etc which makes the cpu/gpu work harder as it deals with larger quantities of data.

Form films both will be great, pushing HD footage to the forefront and that is a good thing. The only thing that worries me is the same thing that happened when broadband and cheaper HDD's appeared. Developers got a bit lazy with demos etc, shoving out 2Gb demos just because people have the space and have broadband. Developers will just shove as much data as they can on the discs, just because the space is there but will it make games any better? The only thing I can see it doing is stretching development times and costs, just to make the most of a huge disc.

Anyway, just me ranting. Anything that HD-DVD and Bluray does that makes playing games and watching videos better for me and everyone else, thats fine by me :)

Kubrick
18/Mar/06, 08:51 PM
Good post.

Personally, films have more significance than mere pictures - sharper pictures will not enhance my experience of a film. A bad film will not be transformed into a good film because I'm watching a sharper and clearer picture; conversely, a good film will not be transformed into a bad film because I'm watching the film on an inferior disc.

Suffice to say, I won't be holding my breath...