PowerPoint 2010:
How to use video as background

Step 1:
Click View, choose Slide Master

Step2:
Choose Insert, Select Movie

Step3:
Select your video, click ok

Step 4:
Set video to Play Automatically

Step 5:
Right the movie, choose Send to Back

PowerPoint 2010:
Video Shapes and Video Effects

Step 1:
Insert your video

Step2:
Select the video on the slide

Step3:
Under Video Tools, choose the Format tab,

Step 4:
In the Video Styles group, click Video Shape / Video Effects.

Step 5:
Select the shape and effects you like

PowerPoint 2003 - 2010:
How to use video as an introduction

Step 1:
Click View, choose Slide Master

Step2:
Choose Insert, Select Movie

Step3:
Select your video, click ok

Step 4:
Set video to Play Automatically

Step 5:
Position and size the video as you like.

PowerPoint 2003 - 2010:
How to use video as an introduction

Step 1:
Choose Insert, Select Movie

Step 2:
Select your video, click ok

Step 3:
Set video to Play Automatically

Step 4:
Position and size the video as you like

PowerPoint 2003 - 2010:
How to use video to add impact

Step 1:
Choose Insert, Select Movie

Step 2:
Select your video, click ok

Step 3:
Set video to Play Automatically

Step 4:
Position and size the video as you like.