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After All the Hype, HD on Standard DVDs

The drama over HD DVD versus Blu-ray Disc has confused consumers and held back adoption and, it turns out, might have been unnecessary after all.

 

October 05, 2007 — IDG News Service (Tokyo Bureau) —

For the last few years most of the world's biggest consumer electronics companies have been arguing over a format for high-definition video discs. The drama over HD DVD versus Blu-ray Disc has confused consumers and held back adoption and, it turns out, might have been unnecessary after all.

New recorders from Toshiba and Matsushita Electric Industrial (Panasonic) shown at this week's Ceatec exhibition in Japan can record high-definition TV to conventional DVDs.

Both of the new high-def formats were developed because conventional DVDs don't have the capacity to hold an HD movie in the MPEG2 format used for most of the world's HDTV broadcasting. While a DVD holds just 4.7G-bytes of data per layer, an HD DVD disc can hold 15G bytes and a Blu-ray Disc 25G bytes, enough to store a high-def movie or soccer match.

But in the last few months chips have become available that can transcode an off-the-air MPEG2 signal in real time into the much more efficient MPEG4 AVC format.

The chips have found their way into new HD DVD and Blu-ray Disc players and can increase their storage capacity by several times. For example, new machines from Sony can store about 8 hours of HDTV on a single-sided Blu-ray Disc using MPEG4 AVC -- about four times the amount of video than was possible with MPEG2.

But they also make it possible to store about 2 hours of HDTV on a conventional DVD. With hardware prices for HD DVD and Blu-ray Disc recorders typically at US$1,000 or more, some consumers may think it's better to stick with the cheap, tried and tested DVD.

Not surprisingly, that's disputed by companies pushing the new, more expensive recorders. They are offering machines that play one of the two new optical disc formats -- HD DVD or Blu-ray Disc -- as well as the "enhanced" conventional DVD.

Panasonic said the dual capability is useful because the Blu-ray Disc media is still quite expensive, so consumers will be able to choose which DVD format to use depending on their needs. "For precious recordings that they want to preserve in high-quality they can use Blu-ray Disc, and for others put them on DVD, said Manabu Sukegawa [cq], managing director of Panasonic's marketing division.

Toshiba said the 3 to 4 times capacity jump from DVD to HD DVD means much more high-def video can be stored on the new discs, and that that alone gives them merit over conventional DVDs.

 
 
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