I have searched all over the place looking for some instructions on putting song lyrics over video loops and have not foung it anywhere. Can anyone show me where these instructions are?
Video backgrounds are a bit unreliagable. The basic rule of thumb is if you can play it with the webkit back end it "should" work as a background (although no gaurentees).
To display a video background you need to select the video from the media manager and then click the "Replace Live Background" see http://manual.openlp.org/mediamanager.html#id5
For idea on loop video background, see - http://openlp.org/en/forums/general-support/development/video-support-backgrounds-song-lyrics#comment-5177