PowerPoint 2010 will accept MP4 video but not MPEG-2 (mpg). This is true on my backup, Toshiba netbook running XP home fully upgraded. Trying to insert a MPEG-2 video results in the error message above. Windows Media Player 11 on the same machine runs the video just fine so I figure the codec must be available.
Interestingly enough, my main computer - a full sized HP Laptop with the same Windows install will run MPEG-2 videos in PPT, but not the MP4.
Suggestions? Thanks.