Need a quick, easy and free way of cleaning up a video’s audio from background noise ? Follow the steps below to remove background audio from videos. First get and install the tools: FFMPEG. SoX – Sound eXchange. Then clean your noise! Split the audio and video streams into 2 seperate files: The VIDEO stream: ffmpeg -i input.mp4 -vcodec copy -an tmpvid.mp4 The AUDIO stream: ffmpeg -i input.mp4 -acodec pcm_s16le -ar 128k -vn tmpaud.wav  Generate a sample of noise from the Read more...