EXTENDED VIDEOCD is an, non official, extension on the VideoCD
or Super VideoCD format, that uses a specific CD-format for storing
either MPEG-1 or MPEG-2 movies only in a particular
format. Most authoring tools do not support this, since the
standard is not clearly defined.
Creating these XVCD's is basically the same as creating VideoCD
and Super VideoCD's.
Nearly all DVD players cannot play these discs! PowerDVD
most likely will play these files, however sometimes not by using
it's own interface (install PowerDVD
and use Windows Media Player for playback).
It can offer an excellent image quality - it depends on your settings.
Since the format is rather non-standard, it's hard too say how much
will fit on a single CDRom.