#!/bin/bash
INFILE="$1"
OUTFILE="${1%.mp4}.m4a"
echo Converting "$INFILE" to "$OUTFILE"
#/usr/bin/ffmpeg -i "$INFILE" -vn -acodec copy "$OUTFILE"
/usr/bin/avconv -i "$INFILE" -map 0:a -c:a copy "$OUTFILE"