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    • High Definition (HD) FAQ

    5. EVD

    EVD

    5.1 What is EVD?

    EVD stands for Enhanced Versatile Disc, and it was developed by a consortium of Chinese companies. EVD is actually just a DVD disc with a different set of video/audio specifications, one using a better compression algorithm than MPEG-2, and hence, allows high definition movies to be stored onto a DVD.

    5.2 When was EVD officially launched?

    EVD was officially announced way back in November 2003, and while players and discs are available, it has not been a total success story. When the other major high definition DVD formats are launched, it will be interesting to see if EVD can market itself as the cheap DVD based alternative to high definition movie distribution.

    5.3 Who is behind EVD?

    EVD was developed by Beijing E-World Technology, a consortium of major electronic firms in China, backed by the Chinese government. These firms include:

    The video compression technology used is On2′s VP5/VP6 video codec, but there was a dispute between On2 and E-World over licensing fees.

    5.4 What about EVD recordable formats?

    EVD is really just a DVD disc with a different set of video/audio codecs, so it can’t really be classified as a recordable media format. EVD is mainly a playback format.

    5.5 Why develop EVD?

    EVD was developed as a response to the relatively high licensing cost of DVDs (around $US 15 per hardware player, as opposed to EVD’s $2). DVD licensing and royalty cost includes CSS, Macrovision, MPEG-2 and the various surround sound systems. EVD will essentially be royalty free.

    Also see section 2.6 and 3.14.

    5.6 What resolution will the video on an EVD be?

    EVD supports 1080i (1920×1080 at 50i or 60i) and 720p (1280×720) resolutions, comparable to HD DVD, although not to Blu-ray’s 1080p support. Standard DVD definitions are also supported, as EVD was originally designed to be a DVD replacement, as well as a next generation DVD format.

    5.7 What kind of video compression will be used?

    EVD uses On2 Technologies’ VP5 and VP6 video compression codecs.

    5.8 What about the audio?

    EVD uses an audio codec from called EAC 2.0 (Enhanced Audio Codec). EAC supports 6 channel audio and is more efficient that Dolby Digital or DTS used in DVDs.

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