Sound is an integral part of film and video production. That is, unless you are making a slient film (which is pretty cool, if I must day). You would need to put sound in your video to make your video production believable to audiences. And by “believable” I mean the audience has to feel that they are actually “there” in the film. But that example mainly focuses on films. Sound can include musical scores,character/subject voices and sound effects. Putting sound in a film usuall occurs in the post-production stage of your project. Remeber the more quality the sound production of your video/film is, the better quality it will be.