What is CVD or Chao-Ji?
CVD and Chao-Ji are two of the extensions to Video-CD that were developed in China. Both systems use MPEG2 to encode video and hence the discs are not compatible with Video-CD or CD-i players. Both systems are also not interchangable with each other. In order to accomplish for a worldwide standard for MPEG-2 on CD, the original Video-CD companies created Super Video-CD. A true Super Video-CD can however be played on both CVD and Chao-Ji players, since it uses subsets of both systems.