https://www.1lou.me/thread-529315.htm
sudo apt upgrade
sudo apt update
sudo add-apt-repository ppa:qbittorrent-team/qbittorrent-stable
sudo apt install qbittorrent
sudo apt-get update
git clone https://github.com/AviSynth/AviSynthPlus && \
cd AviSynthPlus && \
mkdir avisynth-build && \
cd avisynth-build && \

cmake ../ -G Ninja && \
ninja && \
    sudo checkinstall --pkgname=avisynth --pkgversion="$(grep -r \
    Version avs_core/avisynth.pc | cut -f2 -d " ")-$(date --rfc-3339=date | \
    sed 's/-//g')-git" --backup=no --deldoc=yes --delspec=yes --deldesc=yes \
    --strip=yes --stripso=yes --addso=yes --fstrans=no --default ninja install
sudo checkinstall --pkgname=avisynth --pkgversion="$(grep -r Version avs_core/avisynth.pc | cut -f2 -d " ")-$(date --rfc-3339=date | sed 's/-//g')-git" --backup=no --deldoc=yes --delspec=yes --deldesc=yes --strip=yes --stripso=yes --addso=yes --fstrans=no --default ninja install

ffmpeg -i "/root/Downloads/250.mp4" -c:v libx265 -x265-params no-info=1 -vf "scale=3840x2160:flags=lanczos" -b:v 15M -minrate 4M -maxrate 8M -preset fast -c:a aac -b:a 192k -map_metadata -1 "250UHD.mp4"
ffmpeg -ignore_unknown -hide_banner -y -i "/root/Downloads/249.mp4" -c:v libx265 -x265-params no-info=1 -vf "scale=3840x2160:flags=lanczos" -b:v 4M -minrate 8M -maxrate 8M -preset fast -c:a aac -b:a 192k -map_metadata -1 "249UHD.mp4"
ffmpeg -ignore_unknown -hide_banner -y -i "/root/Downloads/248.mp4" -c:v libx265 -x265-params no-info=1 -vf "scale=3840x2160:flags=lanczos" -b:v 4M -minrate 8M -maxrate 8M -preset fast -c:a aac -b:a 192k -map_metadata -1 "248UHD.mp4"
ffmpeg -ignore_unknown -hide_banner -y -i "/root/Downloads/247.mp4" -c:v libx265 -x265-params no-info=1 -vf "scale=3840x2160:flags=lanczos" -b:v 4M -minrate 8M -maxrate 8M -preset fast -c:a aac -b:a 192k -map_metadata -1 "247UHD.mp4"

ls -d "$PWD"/*