#!/usr/bin/env bash
#
# Stupid multitrack audio hack for stupid Premiere.
# Turns a DOSBox-X multitrack AVI capture into several WAV files.
# Requires FFMPEG 3.0 or higher.

# get the track names. DOSBox-X always writes track names
declare -a NAMES
for x in $(ffprobe "${1}" 2>&1 | grep title | cut -d ':' -f 2 | sed -e 's/^ *//'); do
    NAMES=("${NAMES[@]}" "${x}")
done

# do it
i=0
for name in "${NAMES[@]}"; do
    name="${name// /_}" # in case of spaces
    ffmpeg -i "${1}" -acodec copy -map 0:${i} -vn -y -f wav "${1}.${i}-${name}.wav" || break
    i=$((i+1))
done