Sometimes a movie has sound, but you don’t want it. There are lots of reasons; video of a surgery and you don’t want the audience to hear ‘Uh-oh’ in the background, a screen capture video and the application sound FX are distracting, or any number of other reasons.
From within PPT you can set a movie to play muted.
PPT 2003:
1. Select movie
2. Right-click and choose EDIT MOVIE OBJECT
3. Click speaker icon and click MUTE
PPT 2007:
1. Select movie
2. Go to OPTIONS tab and click the speaker icon
3. Select MUTE
PPT 2010:
1. Select movie
2. Go to PLAYBACK tab, click the speaker icon, select MUTE
– Troy @ TLC