fps

#!/usr/bin/env bash

for file in "$@"; do
    (
        echo -n $(( $(ffprobe -v error -select_streams v:0 -show_entries stream=avg_frame_rate -of default=noprint_wrappers=1:nokey=1 "$file") )) && (
            if [ $# -ne 1 ]; then
                echo -n : $file
            fi
        ) &&
        echo
    ) || echo 0
done