#!/usr/bin/env bash

# Combine OP, Episode and ED into one file
# Used for Video files that get the OP and ED via metadata

j=1;

mkdir ./TMP/

for i in *.mkv; do
    ffmpeg  -i "[Coalgirls]_Serial_Experiments_Lain_OP_(1520x1080_Blu-Ray_FLAC)_[DF129863].mkv" -i "$i" -i "[Coalgirls]_Serial_Experiments_Lain_ED_(1520x1080_Blu-Ray_FLAC)_[BF8449F7].mkv" \
        -filter_complex "[0:v]ass=op.ass[video0];[1:v]ass=ep$j.ass[video1];[2:v]ass=ed.ass[video2];[video0][0:a:0][video1][1:a:0][video2][2:a:0]concat=n=3:v=1:a=1[outv][outa]" \
        -map [outv] -map [outa] -preset ultrafast -y ./TMP/Episode\ "$j"_tmp.mkv;
    j=$((j+=1));
done