SONYハンディカムHDR-PJ760等で撮影したAVCHD動画を自動的にチャプタ毎分割しつつ、適当にダウンコンバートしたmp4動画へ変換するbashスクリプト。tsMuxeR, ffmpeg必須。詳細は http://tech.uribou.tokyo/split-avchd-movie-automatically とか参照。

mts_converter.sh

#!/bin/bash

usage_exit() {
    echo "Usage: $0 [options] MPL_FILE" 1>&2
    echo "" 1>&2
    echo "options:" 1>&2
    echo "    -i input source file" 1>&2
    echo "    -d destination dir" 1>&2
    echo "    -r output video resolution (default: 1280x720)" 1>&2
    echo "    -s output video aspect (default: 16:9)" 1>&2
    echo "    -f output video fps (default: 29.97)" 1>&2
    echo "    -v output video codec (default: libx264)" 1>&2
    echo "    -a output audio codec (default: aac)" 1>&2
    echo "    -t tsMuxer path" 1>&2
    exit 1
}

while getopts i:d:v:r:s:f:a:t: OPT
do
    case ${OPT} in
        'i' )
            FILE_SRC=${OPTARG}
            ;;
        'd' )
            DIR_DEST=${OPTARG}
            ;;
        'v' )
            TYPE_VIDEO=${OPTARG}
            ;;
        'r' )
            RESOLUTION=${OPTARG}
            ;;
        's' )
            ASPECT=${OPTARG}
            ;;
        'f' )
            FPS=${OPTARG}
            ;;
        'a' )
            TYPE_AUDIO=${OPTARG}
            ;;
        't' )
            TSMUXER=${OPTARG}
            ;;
        *)
            usage_exit
            ;;
    esac
done

TSMUXER=${TSMUXER:-'/usr/bin/tsMuxeR'}
DIR_DEST=${DIR_DEST:-'.'}
RESOLUTION=${RESOLUTION:-'1280x720'}
ASPECT=${ASPECT:-'16:9'}
FPS=${FPS:-'29.97'}
TYPE_VIDEO=${TYPE_VIDEO:-'libx264'}
TYPE_AUDIO=${TYPE_AUDIO:-'aac'}
DIR_TEMP='.mts_parser'

init() {
    mkdir -p ${DIR_TEMP}
    cd ${DIR_TEMP}
    rm -f convert.sh
}

make_mts_info() {
    MTS_INFO='mts.info'
    ${TSMUXER} ${FILE_SRC} | \
        grep -E '^(File|Marks).+' | \
        perl -pe 's/\n/,/g' | \
        perl -pe 's/,File/\nFile/g' | \
        perl -pe 's/Marks:\s+(.+)/Marks=$1/g' |
        perl -pe 's/^File.+name=(.+)/File=$1/g' |
        tr -d ' ' > ${MTS_INFO}
        echo '' >> ${MTS_INFO}

    echo ${MTS_INFO}
}

make_converter() {
    FFMPEG_OPT_BASE="-profile:v baseline -level:v 3.1"
    FFMPEG_OPT_VIDEO="-vcodec ${TYPE_VIDEO} -s ${RESOLUTION} -aspect ${ASPECT} -vf fps=${FPS}"
    FFMPEG_OPT_AUDIO="-acodec ${TYPE_AUDIO} -strict experimental"
    FFMPEG_OPT="${FFMPEG_OPT_BASE} ${FFMPEG_OPT_VIDEO} ${FFMPEG_OPT_AUDIO}"

    NUMBER=$(printf '%03d' ${1})
    BASE=${FILES[0]}

    if [ ${#FILES[@]} -eq 1 ]; then
        echo "cp ${BASE} ${DIR_DEST}/${NUMBER}.$(basename ${BASE})" | tee -a convert.sh
        echo "ffmpeg -i ${BASE} ${FFMPEG_OPT} ${DIR_DEST}/${NUMBER}.$(basename ${BASE}).mp4" | tee -a convert.sh
    else
        echo "cat ${FILES[@]} > ${DIR_DEST}/${NUMBER}.$(basename ${BASE})" | tee -a convert.sh
        echo "ffmpeg -i ${DIR_DEST}/${NUMBER}.$(basename ${BASE}) ${FFMPEG_OPT} ${DIR_DEST}/${NUMBER}.$(basename ${BASE}).mp4" | tee -a convert.sh
    fi
}

init
MTS_INFO=$(make_mts_info)

FILES=()
COUNT=0
LINES=$(wc -l ${MTS_INFO} | cut -d' ' -f1)

cat mts.info | while read LINE
do
    let COUNT++
    if [[ ${LINE} =~ .*Marks.* ]]; then
        if [ ${#FILES[@]} -gt 0 ]; then
            make_converter ${COUNT}
        fi

        FILES=($(echo ${LINE} | cut -d, -f1 | cut -d= -f2))
    else
        FILES=(${FILES[@]} $(echo ${LINE} | cut -d, -f1 | cut -d= -f2))

        if [ ${COUNT} -ge ${LINES} ]; then
            make_converter ${COUNT}
        fi
    fi
done

chmod +x convert.sh
. convert.sh