ambevar-dotfiles/.scripts/tc-video-demux-audio

#!/bin/sh

if [ -z "$(command -v ffmpeg)" ]; then
    echo "ffmpeg required."
    exit
fi

if [ $# -ne 2 ]; then
    echo "Usage: ${0##*/} VIDEO AUDIO_OUTPUT"
    exit
fi

ffmpeg -i "$1" -vn -sn -c:a copy -map 0:1 "$2"