Get the size to duration ratio of a media

ratio.sh

#!/usr/bin/env sh

# Description: POSIZ compliant script to get the size to duration of a media file
# Requires: mediainfo, bc, ls
#
# For sorted output: ratio.sh | sort -rg

for file in *; do
    # get duration in milliseconds->mins
    ms=$(mediainfo --Inform="Video;%Duration%" "$file")
    min=$(echo "scale=2;${ms}/60000" | bc)

    # get the file size
    size=$(ls -l "$file" | cut -d" " -f5)
    mb=$(echo "scale=2;${size}/1048576" | bc)

    # get mb/min ration
    ratio=$(echo "scale=2;${mb}/${min}" | bc)

    # echo $ratio "$file"
    echo $ratio $(ls -sh "$file")
done

ratio | sort -nr > ratio