"Brian M" Brian wrote in message
...
Avis appear white when run inside a powerpoint. These avi's run fine when
I
double click them from windows explorer but when the run inside the power
point with a click action to start them my screen turns white.

White playback is usually a path length issue. See
http://www.echosvoice.com/tshoot_video2.htm

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Echo [MS PPT MVP]
http://www.echosvoice.com