convert cardboard camera vr files to oculus quest stereo mp4 using ffmpsg

renderall

#!/bin/bash
# usage:
#   * put this script in a folder (`./renderall` e.g.)
#   * chmod 755 renderall
#   * convert carboard camera pictures to same folder using this tool: https://github.com/AbosaSzakal/CarboardCamera-Converter
#   * run ./renderall
#   * voila..mp4 files are now in directory /out
fps=25
test -d out && rm -rf out
mkdir out
for i in *.jpg; do
  slug="${i/.jpg/}"
  out=out/${slug/\.vr-converted/}.mp4
  codec="-c:v libx264 -crf 18 -x264-params mvrange=511 -maxrate 50M -bufsize 25M -pix_fmt yuv420p -movflags faststart -c:a aac -b:a 192k"
  ffmpeg -framerate $fps -i $slug.jpg -vf scale=5760:5760,eq=brightness=0.07,vibrance=intensity=1.5:gbal=4 ${codec} -r $fps -t 1 /tmp/tmp.mkv -y
  ffmpeg -stream_loop -1 -i /tmp/tmp.mkv -i $slug.mp4 -map 0:v -map 1:a ${codec} -r $fps -shortest -tune stillimage $out
  cd spatial-media
  python3 spatialmedia -i --stereo=top-bottom ../$out ../$out.2
  mv ../$out.2 ../$out
  cd -
done