SVCD stands for Super Video Compact Disc (called also SuperVCD or Chaoji VCD).
SVCD is a new CD standard developed in 1998 by Chinese consumer electronics manufacturers, Chinese government and VCD consortium (Sony, Philips, Matsushita and JVC) that allows regular CD to contain 35-60 minutes of video and audio. A SVCD is very similiar to a VCD, although SVCD's video bitrate is normally higher than VCD's. SVCD contains very good quality full-motion MPEG2 video along with up to 2 stereo audio tracks (MPEG1 stereo audio layer II, MPEG2 stereo audio layer II or MPEG2 Multi-Channel 5.1 surround audio) and also 4 selectable subtitles. A SVCD can be played on many standalone DVD Players and of course on all computers with a DVD-ROM or CD-ROM driver with the help of a software based decoder/player.
Just like VCDs (and audio CDs), SVCDs require a specific way how they are burned on the CD -- just sticking all the required files into CD structure doesn't make disc a SVCD compatible. Most of the new CD burning applications support SVCD already, so authoring your own SVCDs should be relatively easy. View DVD to SVCD Ripper.