When creating an Video advertisement sometimes if there is no professional acting ability, only business employees and customers, I recommend writing the script and then take the B-Roll shots (shots of activities being talked about in script). Then after you read the script and record it just edit it together with your best B-Roll shots. This creates a Video Production or ad that sells both visually and verbally. In this video is an example of a weight loss clinic in Phoenix Arizona we did just that for.
“The term actually was born long before the ENG era, when us creative folks who were shooting film in the day, wanted to cover a jump cut in a sound on film an interview for example. The Audio is or was an integral part of the film, there was no way to splice in a cutaway shot without interrupting the audio.
The answer was to prepare a another reel of film, containing several seconds of the desired cutaway shot. Both reels were threaded into projectors in master control and started at the same time. The TD would watch for the cutaway shot to appear on the monitor, “take” the second projector, and then wait until the splice in the interview has passed through the other projector gate before switching back. This second reel was referred to as the B roll. Once editors and directors got the hang of this radical innovation we began to do more than cover mistakes, B-roll is now routinely used to break the monotony of lengthy talking heads. In the beginning this was all shot live, now B roll is at times the part of a news story you really want to see.