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Video without an Audio Stream does not Play Correctly
http://www.vistaarticles.com/articles/269/1/Video-without-an-Audio-Stream-does-not-Play-Correctly
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Published on 12/10/2006
 
When you try to play Windows SlideShow in Windows Vista, you may experience either of the following problems.

Video without an Audio Stream does not Play Correctly
To work around this problem, use the RIGHT ARROW key on the keyboard or on the toolbar to move to the next frame.