#!/bin/sh

set -e

filepath=${1:-}
audioname=$(printf "$filepath" | sed "s/\(.*\).vtt/\1/")
filename=$(basename "$audioname")

outdir=/mnt/desktop/media/datasets/nesfatelp_voice/utterances
# outdir=$(dirname "$filepath")/utterances
mkdir -p "$outdir"


# given vtt what is original ext?
ffmpeg_commands=$(grep "\-->" $filepath | awk -F " " \
    -v aname="$audioname" \
    -v bname="$filename" \
    -v outdir="$outdir" \
    '{print "ffmpeg -i "aname" -ss " $1 " -to " $3 \
    " -metadata text_source=" aname ".vtt" \
    " -ar 22050 " outdir "/" bname"_" $1"_"$3 ".wav"}')

while read cline;
do
    echo $cline && sleep 1;
    eval $cline && sleep 1;
done <<< $ffmpeg_commands