I had an oppurtunity to set up a live video feed between multiple venues for an upcoming guest speaker at our church recently. This gave me a chance to look at video/audio baluns as I knew the run would be about 1000 feet from one location to another. I had CAT5 pulled between locations with RJ45 connectors installed. I decided to go with composite baluns to convert over from CAT5 as the need was only for a good camcorder type feed. Set up a camcorder on one end and a projector and screen on another. Connected the audio into the sound board on one end and speakers on the other. Everything worked great!