XSVCD stands for eXtended SVCD.
XSVCD has same features as SVCD however it is possible to work with higher resolution and higher bitrates to acquire higher video quality. XSVCD burned in "SVCD" Mode over a CD-R or CD-RW is usually played on some hardware DVD players and several computers with appropriate software like a software DVD player or possibly a media player having a MPEG-2 codec.