#!/usr/bin/env bash

target="$1"
shift

set -e

while [[ ! -z "$1" ]]
do
    path="$1"
    shift

    out="$(dirname "$path")/$(basename "$path" | sed -e 's/\.[^\.]*$//').$target"
    if [[ -z "$(echo "$out" | grep "\.$target\$")" ]]
    then
        out="$path.$target"
    fi
    ffmpeg -i "$path" "$out"
done