Clean Audio in a video using only Audacity and FFMPEG
Source: https://www.linuxquestions.org/questi...
Want to replace audio in a video?
In this video I show you how using only Audacity and FFMPEG (AVCONV)
in terminal using ffmpeg
ffmpeg -i remove-noise-video.flac -i remove-noise-video.webm -vcodec copy final.webm
in terminal using avconv
avconv -i remove-noise-video.flac -i remove-noise-video.webm -vcodec copy final.webm
this of course assumes that you've already navigated to the folder which contains both the original video and the audio you will be using to replace the original track.