A video or an audio book that has a voice over at the back is something that provides many advantages to both the users and the people that want to market their services and brands. Yes, the customers that watch the ad films and other videos will understand the objective of the ad and what is actually conveyed through the Ad film. As far as the people that does ad film for their products and services are concerned, their ad film with voice over will stop the public towards their ad and let them feel the excellence of the voice advertisement. If your advertisement comes out with good and effective voice clarity, then no one can stop people from watching your advertisement. This is why the effective and powerful voice is believed as a good marketing strategy.