Gets the recursive total duration of all the audio and video files in a directory

total-video-runtime

#!/usr/bin/env bash
#
# Total Video Runtime
# Gets the recursive total duration of all the audio and video files in a directory
#
# Requires ffmpeg and bash 4.0
#
# Usage:
# ./total-video-runtime ~/my_dir/

echo "Getting total video / audio duration for files in $1"

shopt -s globstar nullglob dotglob

total=0;

for f in $1**/*
do
    duration=`ffmpeg -i "$f" 2>&1 | grep "Duration"| cut -d ' ' -f 4 | sed s/,// | sed 's@\..*@@g' | awk '{ split($1, A, ":"); split(A[3], B, "."); print 3600*A[1] + 60*A[2] + B[1] }'`
    if (( duration > 0 ))
    then
        echo "$f ->  $duration seconds"
    fi
    total="$((total+duration))"
done

echo "Total duration:"
echo "$total seconds"