makeframemd5

#!/bin/bash
# makeframemd5

version="1.0"
unset dependencies
dependencies=(ffmpeg ffprobe)

cleanup(){
    log -a "Process aborted"
    exit 1
}

trap cleanup SIGHUP SIGINT SIGTERM

usage(){
    echo
    echo "$(basename $0) ${version}"
    echo "This script may be run interactively by running it with no arguments or may be used with the following options."
    echo "Usage: $(basename $0) [ -i input ] [ -d ] [ -c ] [ -f ]"
    echo "  -h Show this 'help'."
    echo "  -d Decode video frames prior to checksuming."
    echo "  -c Copy video frames to checksum utility"
    echo "  -f (experimental) Fingerprint video frames by filter frames to "
    exit
}

check_dependencies(){
    deps_ok=YES
    while [ "$*" != "" ] ; do
        dependency="$1"
        if [ ! $(which $dependency) ] ; then
            echo "This script requires $dependency to run but it is not installed"
            echo "If you are running ubuntu or debian you might be able to install $dependency with the following command"
            echo "sudo apt-get install ${dependency}"
            echo "If you are running mac you might be able to install $dependency with the following command"
            echo "brew install ${dependency}"
            deps_ok=NO
        fi
        shift
    done
    if [[ "$deps_ok" == "NO" ]]; then
        echo "Unmet dependencies"
        echo "Aborting!"
        exit 1
    else
    return 0
    fi
}

check_dependencies "${dependencies[@]}"

unset framemd5opts
while getopts ":i:dcf" opt; do
    case "$opt" in
        i)  input="$OPTARG"
            [ -d "$input" ] && { outputdir="$input/metadata/submissionDocumentation/framemd5" && logdir="$input/metadata/submissionDocumentation/framemd5/logs" ;};
            [ -f "$input" ] && { outputdir=`dirname "$input"`"/framemd5" && logdir="`dirname "$input"`/framemd5/logs" ;}; ;;
        h)  usage ;;
        d)  outputname="$outputdir"/$(basename "${input%.*}_framemd5.md5")
            if [ ! -f "$outputname" ] ; then
                framemd5opts+=(-f framemd5 -an "$outputname")
            else
                echo "$outputname already exists skipping."
            fi ;;
        c)  outputname="$outputdir"/$(basename "${input%.*}_codec_copy_framemd5.md5")
            if [ ! -f "$outputname" ] ; then
                framemd5opts+=(-c copy -an -f framemd5 "$outputname")
            else
                echo "$outputname already exists skipping."
            fi ;;
        f)  outputname="$outputdir"/$(basename "${input%.*}_monow_sqcif_framemd5.md5")
            if [ ! -f "$outputname" ] ; then
                framemd5opts+=(-vf format=monow,scale=40:30 -an -f framemd5 "$outputname")
            else
                echo "$outputname already exists skipping."
            fi ;;
        \?) echo "Invalid option: -$OPTARG" ; exit 1 ;;
        :) echo "Option -$OPTARG requires an argument" ; exit 1 ;;
    esac
done
shift $(( ${OPTIND} - 1 ))
[ "${input}" = "" ] && { echo -e "An input must be given as in\n  $(basename $0) [ -i input ]" ; exit 1 ;};
[ ! -f "$input" ] && { echo "Sorry, the input must be a file (for now)." ; exit 1 ;};

if [[ "${framemd5opts}" -eq "" ]] ; then
    outputname="$outputdir"/$(basename "${input%.*}_framemd5.md5")
    framemd5opts+=(-f framemd5 -an "$outputname")
fi

mkdir -p "${outputdir}"
if [ "${logdir}" != "" ] ; then
    mkdir -p "${logdir}"
    export FFREPORT="file=${logdir}/$(basename ${input%.*})_%p_%t_$(basename $0)_${version}.txt"
    inputoptions+=(-vsync passthrough -v warning -stats)
fi
echo "Running: ffmpeg ${inputoptions[@]} -i ${input} ${framemd5opts[@]}"
ffmpeg ${inputoptions[@]} -i ${input} ${framemd5opts[@]}