Maybe you want to mute the audio, add another audio as background music, sound effect, voice-over, or use the audio layers on some other video.Professionals also use this method to create more original scenes and make impressive b-rolls. Removing audio from the video offers you more freedom to be creative with the videos and use them in whatsoever way on your timeline. When you do video and audio editing, you need to separate audio from the videos for certain purposes.