video2binary

#!/usr/bin/env bash

usage_and_exit () {
    echo "Usage: video2binary [-v] infile outfile"
    exit $1
}
check_executable_or_exit() {
    if [ ! -x $1 ]; then
        echo "error: no $(basename $1) at $gzip"
        exit 2
    fi
}

if [ \( $# -eq 1 \) -a \( "$1" = '--help' \) ]; then
   usage_and_exit 0
fi

# check needed binaries
gzip=/usr/bin/gzip
check_executable_or_exit $gzip
ffmpeg=/usr/bin/ffmpeg
check_executable_or_exit $ffmpeg

# check parameters
verbose=0
while getopts 'v' option; do
    case "$option" in
    v) verbose=1;;
    ?) usage_and_exit 1;;
    esac
done
shift $(($OPTIND - 1))

if [ $# != 2 ]; then
    usage_and_exit 1
fi
if [ ! -r "$1" ]; then
    echo "error: file '$1' does not exist or is not readable"
    exit 4
fi

tmpfile_gzipped=$(mktemp --tmpdir video2binary.gz.XXXXXXXXXX)

infile="$1"
outfile="$2"
pixel_format=rgb24

$ffmpeg -y -hide_banner -loglevel error \
    -i "${infile}" -f rawvideo -pix_fmt rgb24 "${tmpfile_gzipped}"
size_gzipped=$(stat --format=%s ${tmpfile_gzipped})
if [ $verbose = 1 ]; then
    echo "gzipped file has $size_gzipped bytes"
fi

$gzip -d -c "${tmpfile_gzipped}" > "${outfile}"
if [ $verbose = 1 ]; then
    echo "output file has $(stat --format=%s "${outfile}") bytes"
    echo -n "output file MD5: "
    md5sum "${outfile}" | cut -d\  -f1
fi

rm ${tmpfile_gzipped}