//转载请注明出处，
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http://www.dvdfaq.com.cnJune 2005
BD/HD DVD format unification talks are continuing, despite tough public stances from both sides that they will not give up key features of their format. The CE groups seem to be having problems reaching any sort of compromise, so the battlefield has now shifted to the studios, with each format camp trying to get all the studios on their side. If both formats go to market, the one with the most content will win.
Dolby has decided that Dolby TrueHD will be the new marketing name for the MLP lossless audio format. This is similar to Dolby Digital being the marketing name for the AC-3 audio format.
April 2005
Members of both camps continue to talk about players and discs being available by the end of the year, although it's extremely unlikely (other than perhaps limited releases in Japan), since the specifications are not final and copy protection is still being worked out.
November 2004
New Medium Enterprises announced yet another contender for next-generation DVD: VMD (Versatile Multilayer Disc), to be launched in fall 2005, which adds additional layers to standard 1- or 2-layer DVDs to store 15, 20, 25, and 30 GB on a disc. I'll say what I said about FMD (an intriguing technology that failed): dozens of high-powered companies defined the DVD standard. Small startups with great ambitions but limited resources will never succeed in creating a mass-market successor.
August 2004
Both the DVD-Forum and the Blu-ray Disc Association (BDA) have chosen VC-1 (Microsoft's WMV9) and H.264 as advanced video codecs.
November 2003
On November 19th the DVD Forum steering committee finally approved the blue-laser HD-DVD standard for continued work.
The Chinese government announced that EVD (enhanced versatile disc) would be launched for Christmas 2003. EVD is a "homegrown" alternative to DVD technologies developed by the DVD Forum and CE companies in Japan. EVD uses its own optical disc format and a proprietary video compression technology (VP5 and VP6, developed by On2 in the U.S.). EVD supports HD resolutions up to 1920x1080. EVDs will not play in standard DVD players, and it's possible that many EVD players will not play DVDs since part of the reason for developing the format was to get away from paying royalties on DVD technologies. EVD players in China will cost about $250, compared to about $80 for a DVD player. It remains to be seen if EVD will succeed in China and if it will appear in any other countries.
September 2003
The DVD Forum steering committee once again failed to approve the AOD format (now being called HD-DVD by proponents in the DVD Forum). Some people in the industry, including Warren Lieberfarb, formerly at Warner and responsible for much of the success of DVD, began talking about sticking with existing red-laser DVD for high-definition video, using advanced codecs such as H.264 or Microsoft WM9. A number of press articles incorrectly reported that the DVD Forum was abandoning blue-laser HD technology.
June 2003
There are rumors that there's a 6th HD format in the works based on the +RW format.
In the June meeting of the DVD Forum Steering Committee, the vote to officially approve work on the next-generation DVD format (AOD, see below) did not pass. This does not mean that the format was voted down, as reported elsewhere, only that the proposal as currently defined was not approved. There was clear bias in the voting, since the members that voted no or abstained were all participants in the competing Blu-ray group. There will be another vote on a modified proposal in mid September. In the meantime, work continues inside and outside the DVD Forum on next-generation DVD.
March 2003
There are now at least 5 candidates for high-definition DVD.
- HD-DVD-9 (aka HD-9).
- Advanced Optical Disc (AOD).
- Blu-ray (BD).
- Advanced Optical Storage Research Alliance (AOSRA), Blue-HD-DVD-1.
- AOSRA Blue-DVD-DVD-2.
June 2002
Philips demonstrated a blue-laser miniature pre-recorded optical disc. The 3-cm (1.2-inch) disc holds 1 Gbyte of data. The prototype drive to read the disc measured 5.6 x 3.4 x 0.75 cm (2.2 x 1.3 x 0.3 inches).
February-March 2002
A group of 9 companies announced February 19th a new high-density recordable DVD standard, known as Blu-ray. At the DVD Forum general meeting in March, the Forum announced that it will investigate next-generation standards to choose the best one. Since the 9 companies are all members of the DVD Forum, it's likely that Blu-ray will eventually be approved by the Forum.
Also at the March meeting the Forum announced that according to AOL Time Warner's request it will work on a standard for putting high-definition video on existing DVDs. The format is being called "HD-DVD-9."
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