Useful FAQ in PowerPoint I found in the Internet:)
There are many reasons why your movie file may not play……
Source:http://office.microsoft.com/en-us/powerpoint/HA100777161033.aspx
Amazing PPT Hints, Tips and Tutorials
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http://www.tutorialized.com/view/tutorial/How-to-Convert-PowerPoint-Presentation-PPT-to-Video-AVI-MPEG-and-CD-DVD/34075
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