In order to watch a film or educational video material in a foreign language was pleasant and convenient, you cannot do without dubbing. The user needs more than just words and their translation. For effective learning, it is important to remember how words sound and how they should be pronounced correctly. At first, we had thoughts of doing without voice acting in general or limiting ourselves to automated voice over – voice acting with a speech synthesizer. But we realized that for a quality product that users will be willing to pay for, such compromises are not rational.