 XSVCD (eXtended Super VCD) is the name generally given to any format that stores MPEG-2 video on a compact disc in mode 2/XA, at SVCD resolution, but does not strictly meet the SVCD standard.To reduce the data rate without significantly reducing quality, the size of the GOP can be increased, the maximum data rate can be exceeded, and a different MPEG-2 quantization matrix can be used.These changes can be advantageous for those who want to either maximize video quality, or use fewer discs.