#!/bin/bash
###################################################################### 
#Copyright (C) 2022  Kris Occhipinti
#https://filmsbykris.com

#This program is free software: you can redistribute it and/or modify
#it under the terms of the GNU General Public License as published by
#the Free Software Foundation, either version 3 of the License, or
#(at your option) any later version.

#This program is distributed in the hope that it will be useful,
#but WITHOUT ANY WARRANTY; without even the implied warranty of
#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#GNU General Public License for more details.

#You should have received a copy of the GNU General Public License
#along with this program.  If not, see .

#Based on code by Fire7ly
#https://gist.github.com/Fire7ly/8a46d6605dac976e140911cf8a45a090
###################################################################### 

url="https://www.youtube.com/watch?v=Nl6l63AYg7s"
tmp="/tmp/bootani"
mp4="$tmp/video.mp4"
rez="720"
fps=30

[[ -d "$tmp" ]] && rm -fr "$tmp"
mkdir -p "$tmp/part0"

youtube-dl -f 22 -o "$mp4" "$url"
ffmpeg -i "$mp4" "$tmp/part0/00%05d.jpg"

for i in $tmp/part0/*.jpg
do
  convert $i -rotate 90 -resize $rez $i
done

size="$(identify -format '%w %h' $tmp/part0/0000001.jpg)"
echo "$size $fps" > "$tmp/desc.txt"
echo "p 1 0 part0" >> "$tmp/desc.txt"

cd "$tmp"
rm "$mp4"
zip -0r bootanimation part0 desc.txt

echo "Animation file at $tmp/bootanimation.zip"