How to remove unnecessary audio from a video file

Once in a while I encounter a video file which has more than one audio stream attached to it. Usually I’m only interested in one of those and want to get rid of the others. Specially if the first one is not the one I’m interested in. Xbox for example does provide an easy way to selecting some other stream besides the first one. The wonderful open-source project libav provides the tools we need: avprobe and avconv. Read more