If you want to show videos from Youtube, Dailymotion, Metacafe or Video Google you are not able to configure much! So it is very easy!
Follow this steps
Whenever you want to display a video inside a content element, you need to select a dummy file with the file ending “.rgg” as a placeholder. This file can be empty (You can find a dummy file in EXT:rgmediaimages/res/dummy.rgg) .
Add a placeholder/dummy file