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HD DVD

Old 12-24-2008, 11:33 AM
  #1  
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Default HD DVD

Do you need a HD DVD palyer too play a HD DVD disk? Does it just come in regular definition or does it not come in at all if you put it in a regular DVD player - or maybe it doesn't fit? The HD DVD disk set I am looking at is like 1/3 the price of the regular DVD version...

Yahoo answers says YES. But I find that hard to believe - because why would anyone pay 59 bucks for a DVD set when the HD DVD set is 29 bucks?

Thanks

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Old 12-24-2008, 11:38 AM
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Default Re: HD DVD

The HD DVD spec (includes BluRay) specifies the disc must be playable on a std DVD player with std definition audio and video.

Hope that helps.


ETA: HD DVD disks potentially offer feature rich programming. Those program features would not be available if playing an HD DVD disk on a std DVD player; e.g. you may not have access to extraneous commentary, alternative camera angles, etc. You will get the movie and audio as if it were on a regular DVD.

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Old 12-24-2008, 11:57 AM
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Default Re: HD DVD

HD DVD and Blu Ray are not the same thing. Blu Ray is certainly high definition, but HD DVD refers to a specific obsolete disc format.
See:
http://en.wikipedia.org/wiki/High_de...isc_format_war

That HD DVD is cheap because no one builds HD DVD players anymore.
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Old 12-25-2008, 06:33 AM
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Default RE: HD DVD

Curious - what HD DVD box set are you looking at for $30. I bought a HD DVD player - yeah I know it s the losing format but I got a bunch of free movies with it and picked up the Planet Earth box set which makes it worth it to me. Since HD DVD titles are geting scarce I wouldn't mind picking some up.
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Old 12-25-2008, 11:03 AM
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Default Re: HD DVD

SSheila - 12/25/2008 3:57 AM

HD DVD and Blu Ray are not the same thing. ...

That is correct, but the original data spec that defines high definition audio and video on HD DVD and BluRay is the same. That spec says a high definition DVD, whatever the format, must be backward compatible, playable on a regular old DVD player. However, that does not mean a manfr producing the disc is making them to spec. And BluRay is just now starting to get caught up on the backward compatibility thing, isn't totally there yet.

Problem; BluRay is a totally different manf'ing scheme, not compatible with old DVD manf'ing. No one wants to maintain two manf'ing lines for the same movie, expensive. Consumers are slow to buy high def DVD players, necessitating DVD manfrs to maintain two lines unless/until high def DVDs are playable on old DVD players.

HD DVD disc manf'ing was possible with a minor, inexpensive tweak to existing DVD manf'ing lines. Much less expensive to make HD DVD, easier to make backward compatible.

Hybrid and multi-layer high def DVDs are not to the original hi def DVD spec, not likely to be playable on old DVD players. BluRay has its own spec consortium of mnfrs now that agree on current and future BluRay spec so as time goes on BluRay discs will be further and further away from the original hi def DVD spec. It is possible future BluRay DVDs will not be playable on current BluRay players.

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Old 12-25-2008, 02:16 PM
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Default Re: HD DVD

Eyeball - 12/25/2008 11:03 AM

SSheila - 12/25/2008 3:57 AM

HD DVD and Blu Ray are not the same thing. ...

That is correct, but the original data spec that defines high definition audio and video on HD DVD and BluRay is the same. That spec says a high definition DVD, whatever the format, must be backward compatible, playable on a regular old DVD player. However, that does not mean a manfr producing the disc is making them to spec. And BluRay is just now starting to get caught up on the backward compatibility thing, isn't totally there yet.

Problem; BluRay is a totally different manf'ing scheme, not compatible with old DVD manf'ing. No one wants to maintain two manf'ing lines for the same movie, expensive. Consumers are slow to buy high def DVD players, necessitating DVD manfrs to maintain two lines unless/until high def DVDs are playable on old DVD players.

HD DVD disc manf'ing was possible with a minor, inexpensive tweak to existing DVD manf'ing lines. Much less expensive to make HD DVD, easier to make backward compatible.

Hybrid and multi-layer high def DVDs are not to the original hi def DVD spec, not likely to be playable on old DVD players. BluRay has its own spec consortium of mnfrs now that agree on current and future BluRay spec so as time goes on BluRay discs will be further and further away from the original hi def DVD spec. It is possible future BluRay DVDs will not be playable on current BluRay players.
The video and audio specifications for "High Definition" are the same. The optical specifications are not. Blue Ray players can read the 635 Nanometer spectrum on a DVD and because of the tighter spectrum on the blue laser, can read the 405 Nanometer pits on the Blue Ray Disk.

Blue Ray media was never conceived to be backwards compatible, the players however, are backwards compatible and for the most part, firmware upgradable as well.

I can't imagine we will be seeing any developments in Blue Ray media that render the current players obsolete, not at least for 5 years. The firmware upgrades and internal memory in the good players will keep them working as improvements and changes are made to the media. As long as it's the 400 Nanometer process, the player is going to read it, and as long as the firmware knows how to decode the digital data, it will play it.

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