# CLI arguments
input_video=$1
output_video=$2

# Get video pixel format
video_pix_fmt=$(ffprobe -v error \
    -select_streams v:0 \
    -show_entries stream=pix_fmt \
    -of flat "$input_video" \
    | sed 's/\"//g' \
    | awk -F= '{ print $2 }')

# Set transcode profile based on pixel format
case $video_pix_fmt in
    yuv420p10le)
        video_profile="main444-10"
        ;;
        
    yuv420p12le)
        video_profile="main444-12"
        ;;

    yuvj420p)
        video_profile="main444-8"
        ;;

    *)
        video_profile="main444-8"
        ;;

esac

# Transcode video
ffmpeg -v info -hide_banner -i "$input_video" \
    -progress - \
    -nostats \
    -preset slow \
    -tune animation \
    -c:s copy  \
    -c:a copy \
    -c:v libx265 \
    -profile:v $video_profile \
    -crf 36 \
    "$output_video"