[FFmpeg-user] Can I add audio to avi with audio

[Peter B.]

bartoszx wrote:
> Can I add audio to file which already has audio. I have avi with couple of sound fx and now I want to add loop in the background.
> I've tried ffmpeg -i loop.mp3 -i test.avi -acodec copy -vcodec copy out.avi
> it adds loop instead existing audio in test.avi
>
>   
For what you are trying to do, you will need to mix the audio in an
editing application and then bounce it as one audio track into the final
AVI.

Pb