makeqctoolsreport

#!/bin/bash
# qctools reporter
# this bash script accepts one or many video file inputs and produces
# sidecar QCTools xml.gz report file for each input

_get_videostreamcount(){
    VIDEOSTREAMCOUNT=$(ffprobe "${1}" -select_streams v -show_entries stream=index -of flat 2>/dev/null | awk 'END { print NR }')
}
_get_audiostreamcount(){
    AUDIOSTREAMCOUNT=$(ffprobe "${1}" -select_streams a -show_entries stream=index -of flat 2>/dev/null | awk 'END { print NR }')
}

while [ "${*}" != "" ] ; do
    unset audiofilterseperator
    unset moviefiltermap
    unset moviefilteroutput
    unset ebur128filters
    file="${1}"
    _get_videostreamcount "${file}"
    _get_audiostreamcount "${file}"
    if [[ "${VIDEOSTREAMCOUNT}" > 0 ]] ; then
        moviefiltermap=":s=v"
        moviefilteroutput="[v0]"
        if [[ "${AUDIOSTREAMCOUNT}" > 0 ]] ; then
            for (( c=1; c<=${AUDIOSTREAMCOUNT}; c++ )) ; do
                moviefiltermap+="+a"
                moviefilteroutput+="[ai${c}]"
                ebur128filters+=";[ai${c}]ebur128=metadata=1[out${c}]"
            done
        fi
        ffprobe -f lavfi \
        -i "movie=${file}${moviefiltermap}${moviefilteroutput},\
        [v0]signalstats=stat=tout+vrep+brng,\
        cropdetect=reset=1,split[a][b];\
        [a]field=top[a1];\
        [b]field=bottom[b1],[a1][b1]psnr[out0]\
        ${ebur128filters}" \
        -show_frames \
        -show_versions \
        -of xml=x=1:q=1 \
        -noprivate | gzip > "${file}.qctools.xml.gz"

        echo
        echo "movie=${file}${moviefiltermap}${moviefilteroutput},\
        [v0]signalstats=stat=tout+vrep+brng,\
        cropdetect=reset=1,split[a][b];\
        [a]field=top[a1];\
        [b]field=bottom[b1],[a1][b1]psnr[out0]\
        ${ebur128filters}"
        echo

    else
        echo "Error: $(basename '"${file}"' does not appear to have a video track, skipping.)"
    fi
    shift
done