The EVD system, designed to record and playback digital video, audio and data, will use proprietary video codecs called VP5 and VP6 developed by On2 Technologies (New York).

原來是這麼回事

嚴格講起來
mpeg4要在quantizer 1並且解析度約在1408*1056之下
五倍的DVD解析度才可成立

我想他們定出來的quantizer 應該會在2到3左右
就醬子....

感謝TUFU提供的資料