#!/bin/bash

VCODEC="libvpx-vp9"
# VCODEC="libvpx"
# ACODEC="libopus"
ACODEC="libvorbis"
# NUL_OUT='/dev/null'
NUL_OUT="NUL"

echo -e "FILE:\t<${1}>"

echo -e "VCODEC: ${VCODEC}"
echo -e "ACODEC: ${ACODEC}"

echo -e "Soundtrack: ${2}"
echo -e "Cover image: ${1}"
echo -e "Additional params: ${3}"

echo -e "\n\n\n>>>Pass 1"

# h264
ffmpeg  -hide_banner \
        -loop 1 -i "${1}" \
        -i "${2}" \
        ${3} \
        -shortest \
        -c:v libx264 \
        -c:a copy \
        -threads 0 \
        -crf 33 \
        -b:v 0 \
        -r 1 \
        -vf scale="400:trunc(ow/a/2)*2" \
        -y \
        "${2}_${ACODEC}_${VCODEC}.tmp.avi"

echo -e "\n\n\n>>>Pass 2"

ffmpeg  -hide_banner \
        -i "${2}_${ACODEC}_${VCODEC}.tmp.avi" \
        ${3} \
        -shortest \
        -c:v ${VCODEC} \
        -c:a ${ACODEC} \
        -threads 0 \
        -crf 33 \
        -speed 2 \
        -tile-columns 6 -frame-parallel 1 -auto-alt-ref 1  -lag-in-frames 25 \
        -b:v 0 \
        -pix_fmt +yuv420p \
        -f webm \
        -y \
        "${2}_${ACODEC}_${VCODEC}.avi.webm"

mv "${2}_${ACODEC}_${VCODEC}.avi.webm" "music/"

rm "${2}_${ACODEC}_${VCODEC}.tmp.avi"