Mpeg-2 files are normally used in DVD files. If this video came from a DVD
it almost certainly has DRM (Digital Rights Management) in it and can not be
used in PPT. If the file was created with another application (home made
DVD) it may not be compatible with the MCI player (used in PPT).
As a suggestion, give PFCMedia a try. It will convert this file to one
more suitable for use in PowerPoint. You may download a fully functioning
trial from
http://www.pfcmedia.com
(Note: If this file came from a commercial DVD PFCMedia will refuse to
process it.)
Austin Myers
MS PowerPoint MVP Team
Provider of PFCMedia
http://www.pfcmedia.com