makebroadcast

#!/bin/bash
# makebroadcast
# v 1.1 change from mov output to mxf output, force all output to hd
# v 1.2 revert to mov and ffmbc
version="1.2"
scriptdir=$(dirname $(which "$0"))
. "$scriptdir/mmfunctions" || { echo "Missing '$scriptdir/mmfunctions'. Exiting." ; exit 1 ;};
dependencies=(ffmbc ffprobe)
_initialize_make

usage(){
    echo
    echo "$(basename ${0}) ${version}"
    echo "This application will create a file suitable for broadcast or editing from a video file or package input with the following options."
    echo "Dependencies: ${dependencies[@]}"
    echo "Usage: $(basename ${0}) [ -l ] [ -r ] [ -c ] fileorpackage1 [ fileorpackage2 ...]"
    echo "  -l (only use the left channel of the first audio track)"
    echo "  -r (only use the right channel of the first audio track)"
    echo "  -c (run the video through a crop detection filter, then crop the video accordingly during transcoding, slower)"
    echo "  -v (run the video through a volume adjustment filter, then adjust the volume accordingly during transcoding, slower)"
    echo "  -d directory ( directory to deliver the resulting file to )"
    echo "  -o directory ( directory to write the resulting file to )"
    echo "  -n (dry-run mode, show the commands that would be run but don't do anything)"
    echo "  -e emailaddress ( send an email about the delivery, only valid if -d is used )"
    echo "  -E emailaddress ( send an email about process outcome )"
    echo "  -h ( display this help )"
    echo
    exit
}
[ "${#}" = 0 ] && usage

# command-line options to set mediaid and original variables
OPTIND=1
while getopts ":lrcvo:d:e:E:nh" opt ; do
    case "${opt}" in
        l) audiomap="L";;
        r) audiomap="R";;
        c) cropdetect="Y" ;;
        v) voladjust="Y" ;;
        o) outputdir_forced="$OPTARG" && _check_outputdir_forced ;;
        d) deliverdir="$OPTARG" && check_deliverdir ;;
        e) emailaddress_delivery="$OPTARG" && check_emailaddress "${emailaddress_delivery}" ;;
        E) emailaddress_outcome="$OPTARG" && check_emailaddress "${emailaddress_outcome}" ;;
        n) DRYRUN=true;;
        h) usage ;;
        *) echo "bad option -$OPTARG" ; usage ;;
        :) echo "Option -$OPTARG requires an argument" ; exit 1 ;;
    esac
done
shift $(( ${OPTIND} - 1 ))

while [ "${*}" != "" ] ; do
    # get context about the input
    input="$1"
    if [ -z "${outputdir_forced}" ] ; then
        [ -d "${input}" ] && { outputdir="${input}/objects/service" && logdir="${input}/metadata/submissionDocumentation/logs" ;};
        [ -f "${input}" ] && { outputdir=$(dirname "${input}")"/service" && logdir="$(dirname "${input}")/service/logs" ;};
        [ ! "${outputdir}" ] && { outputdir="${input}/objects/service" && logdir="${input}/metadata/submissionDocumentation/logs" ;};
    else
        outputdir="${outputdir_forced}"
        logdir="${outputdir}/logs"
    fi
    _find_input "${input}"
    mediaid=$(basename "${input}" | cut -d. -f1)

    # set up output
    _log -b
    output="${outputdir}/${mediaid%.*}.mov"
    [ -s "${output}" ] && { report -wt "WARNING ${output} already exists, skipping transcode" ; shift ; continue ;};
    _run mkdir -p "${outputdir}"

    # clear local arrays
    unset inputoptions
    unset middleoptions
    unset audiomapping_ffmbc
    filterchain_start=""

    # get information on the input
    get_audio_index "${sourcefile}"
    get_sar "${sourcefile}"
    if [ "${cropdetect}" = "Y" ] ; then
        get_cropdetection "${sourcefile}"
        filterchain_start="${CROPADJ},"
        width=$(echo "${CROPADJ}" | cut -d= -f2 | cut -d: -f1)
        height=$(echo "${CROPADJ}" | cut -d= -f2 | cut -d: -f2)
        dar="(${width}/${height})*${sar}"
    else
        get_width "${sourcefile}"
        get_height "${sourcefile}"
        get_dar "${sourcefile}"
    fi
    get_fieldorder "${sourcefile}"
    if [ "${fieldorder}" != "tff" ] ; then
        filterchain_start+="fieldorder=tff,"
    fi

    if [ "${audiomap}" = "L" ] ; then
        audiomapping_ffmbc=(-map_audio_channel 0:${audio_index_1}:0:0:1:0 -map_audio_channel 0:${audio_index_1}:0:0:1:1)
    elif [ "${audiomap}" = "R" ] ; then
        audiomapping_ffmbc=(-map_audio_channel 0:${audio_index_1}:1:0:1:0 -map_audio_channel 0:${audio_index_1}:1:0:1:1)
    else
        get_audio_mapping "${sourcefile}"
    fi
    middleoptions+=(${audiomapping_ffmbc[@]})

    # set fixed transcoding options
    middleoptions+=(-r ntsc)
    middleoptions+=(-tff)
    middleoptions+=(-threads 4)

    # decide on an output codec, aspect ratio, and padding strategy
    darratio=$(echo "scale=3 ; ${dar}" | bc)
    if [ "${darratio}" = "1.777" -a ! "${cropdetect}" = "Y" ] ; then
        middleoptions+=(-s 1920x1080)
        middleoptions+=(-target xdcamhd422)
        middleoptions+=(-vtag xd5b)
        middleoptions+=(-aspect 16:9)
    elif [ $(echo "scale=3 ; ${darratio} > (16/9)" | bc -l) = 1 ] ; then
        middleoptions+=(-vf "${filterchain_start}pad=${width}:${width}*(9/16)*(${sar}):(ow-${width})/2:(oh-${height})/2,scale=1920:1080:interl=1")
        middleoptions+=(-target xdcamhd422)
        middleoptions+=(-vtag xd5b)
        middleoptions+=(-aspect 16:9)
    elif [ $(echo "scale=3 ; $darratio > (3/2)" | bc -l) = 1 ] ; then
        middleoptions+=(-vf "${filterchain_start}pad=${height}*(16/9)/(${sar}):${height}:(ow-${width})/2:(oh-${height})/2,scale=1920:1080:interl=1")
        middleoptions+=(-target xdcamhd422)
        middleoptions+=(-vtag xd5b)
        middleoptions+=(-aspect 16:9)
    elif [ "$width" = "720" -a "$height" = "480" -a $(echo "scale=3 ; $darratio < (3/2)" | bc -l) = 1 -a ! "$cropdetect" = "Y" ] ; then
        filterchain_start=$(echo "${filterchain_start}" | sed 's/,$//g')
        middleoptions+=(-vf ${filterchain_start})
        middleoptions+=(-target imx30)
        middleoptions+=(-aspect 4:3)
    elif [ "${height}" -eq "486" -a "${width}" -eq "720" ] ; then
        filterchain_start+="crop=720:480:0:4"
        filterchain_start=$(echo "$filterchain_start" | sed 's/,$//g')
        middleoptions+=(-vf ${filterchain_start})
        middleoptions+=(-target imx30)
        middleoptions+=(-aspect 4:3)
    elif  [ "${height}" -eq "512" -a "${width}" -eq "720" ] ;then
        filterchain_start+="crop=720:480:0:32"
        filterchain_start=$(echo "${filterchain_start}" | sed 's/,$//g')
        middleoptions+=(-vf ${filterchain_start})
        middleoptions+=(-target imx30)
        middleoptions+=(-aspect 4:3)
    else
        middleoptions+=(-vf "${filterchain_start}pad=${height}*(4/3)/(${sar}):${height}:(ow-${width})/2:(oh-${height})/2,scale=720:480:interl=1")
        middleoptions+=(-target imx30)
        middleoptions+=(-aspect 4:3)
    fi

    # add audio options
    middleoptions+=(-acodec pcm_s24be)
    middleoptions+=(-ar 48k)
    middleoptions+=(-ac 2)

    # set input options for ffmbc
    inputoptions+=(-y)
    inputoptions+=(-threads 8)
    inputoptions+=(-loglevel verbose)

    # log ffmbc process
    if [ "${logdir}" != "" ] ; then
        _run mkdir -p "${logdir}"
        export FFREPORT="file=${logdir}/%p_%t_$(basename $0)_${version}.txt"
        reportfile="ffmbc_$(date '+%Y%m%d-%H%M%S')_$(basename $0)_${version}.txt"
        echo "ffmbc started on $(date '+%F at %T')" > "${logdir}/${reportfile}"
        echo "Report written to \"${reportfile}\"" >> "${logdir}/${reportfile}"
        echo "Command line:" >> "${logdir}/${reportfile}"
    fi
    if [ "${voladjust}" = "Y" ] ; then
        get_volume_adjustment "${sourcefile}"
        unset audio_pipe_opts
        audio_pipe_opts=(-f s24le -ar 48000 -ac 2)
        _run ffmpeg -v warning -stats -i "${input_movie}" -af volume=${VOLADJ}dB ${audio_pipe_opts[@]} - | ffmbc ${inputoptions[@]} -i "${input_movie}" ${audio_pipe_opts[@]} -i pipe:0 -map 0:v -map 1:a ${middleoptions[@]} "${output}"
    else
        get_codectagstring "${sourcefile}"
        if [ "$codec_tag_string" = "FFV1" -a "$ffv1_version" = "3" ] ; then
            if [ "${logdir}" != "" ] ; then
                _run rm "${logdir}/${reportfile}"
            fi
            _run ffmpeg -report ${inputoptions[@]} -i "${sourcefile}" -vf "fieldorder=tff,pad=720:512:0:24,format=yuv422p,setsar=1/1,setdar=4/3,fps=fps=ntsc" -c:v mpeg2video -intra_vlc 1 -non_linear_quant 1 -qmin 1 -qmax 12 -intra -top 1 -b:v 30M -maxrate:v 30M -minrate:v 30M -bufsize 1001000 -rc_init_occupancy 1001000 -rc_max_vbv_use 1 -rc_min_vbv_use 1 -rc_buf_aggressivity 0.25 -dc 10 -lmin QP2LAMBDA -vbsf imxdump -flags +ildct+ilme+low_delay -ps 1 -tag:v mx3n -c:a pcm_s24be -ar 48k -ac 2 "${output}"
        else
            _run ffmbc ${inputoptions[@]} -i "${sourcefile}" ${middleoptions[@]} "${output}"
        fi
    fi
    echo
    _summarize_make
    _deliver_output
    shift
    _log -e
done