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audiovise
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#!/usr/bin/env bash
usage() {
cat - <<EOF
Usage: $NAME -i <INPUT FILE> -o <OUTPUT FILE>
-h|--help: show this help message
-i|--input: file name for input
-o|--output: file name for output
-d|--debug: print all commands and wait for keypress to continue
--flac: transcode all lossless tracks to FLAC
--opus: transcode all lossless tracks to Opus
--aac: transcode all lossless tracks to AAC
--vorbis: transcode all lossless tracks to Vorbis
--pcmtoflac: transcode PCM to FLAC, touch nothing else
--novideo: strip the video track
--forcelossy: transcode all tracks, even lossy
EOF
}
CODEC=opus
while [ $# -gt 0 ]; do
OPT="$1"
case "${OPT}" in
-i|--input)
shift
INPUT="${1}"
shift;;
-o|--output)
shift
OUTPUT="${1}"
shift;;
-d|--debug)
DEBUG=1
shift;;
--flac)
CODEC=flac
shift;;
--opus)
CODEC=opus
shift;;
--aac)
CODEC=aac
shift;;
--pcmtoflac)
CODEC=pcmtoflac
shift;;
--novideo)
NOVIDEO=1
shift;;
--forcelossy)
FORCE_LOSSY=1
shift;;
-h|--help)
usage
exit;;
*)
echo "$0: invalid option ${1}"
echo "$0 -h for usage options"
usage
exit 1;;
esac
done
# Check for tool dependencies
SELF_FULLPATH=`realpath $0`
SELF_DIR=`dirname $SELF_FULLPATH`
TOOLS=(ffmpeg ffprobe mkvpropedit mediainfo jq bc tr sed grep awk base64)
if [ ! -r $SELF_DIR/toolchecker ]; then
echo "toolchecker not found."
exit 1
else
. $SELF_DIR/toolchecker
fi
if [ -z "$INPUT" ] || [ -z "$OUTPUT" ]; then
echo "Insufficient options provided."
echo "Must supply input (-i/--input) and output (-o/--output) at minimum"
usage
exit 1
fi
if [ ! -s "$INPUT" ]; then
echo "Error reading input file: $INPUT"
exit 1
elif [ -f "$OUTPUT" ]; then
echo "Output file exists."
exit 1
fi
NL=$'\n'
AUDIO_TRACK_META=""
TRACKS=`$MEDIAINFO --output=JSON "$INPUT" | jq -r '.media.track[] | select (."@type"=="Audio") | @base64'`
IFS=$'\n'
for TRACK in ${TRACKS}; do
TRACK_NUMBER=`echo "${TRACK}" | ${BASE64} --decode | $JQ -r '.StreamOrder'`
[ ${TRACK_NUMBER} -eq 0 ] && TRACK_NUMBER=`echo "${TRACK}" | ${BASE64} --decode | $JQ -r '.ID'`
TRACK_CODEC=`echo "${TRACK}" | ${BASE64} --decode | jq -r '.CodecID'`
TRACK_BITRATE=`echo "${TRACK}" | ${BASE64} --decode | jq -r '.BitRate'`
TRACK_LAYOUT=`echo "${TRACK}" | ${BASE64} --decode | jq -r '.ChannelLayout'`
[ "${TRACK_LAYOUT}" == null ] && TRACK_LAYOUT=`echo "${TRACK}" | ${BASE64} --decode | ${JQ} -r '.ChannelLayout_Original'`
TRACK_CHANNELS=`echo "${TRACK}" | ${BASE64} --decode | jq -r '.Channels'`
TRACK_CHANNELS_ORIGINAL=`echo "${TRACK}" | ${BASE64} --decode | ${JQ} -r '.Channels_Original'`
[ "${TRACK_CHANNELS_ORIGINAL}" != null ] && TRACK_CHANNELS=${TRACK_CHANNELS_ORIGINAL}
TRACK_COMPMODE=`echo "${TRACK}" | ${BASE64} --decode | $JQ -r '.Compression_Mode'`
TRACK_FORMAT=`echo "${TRACK}" | ${BASE64} --decode | $JQ -r '.Format'`
TRACK_FORMAT_COMMERCIAL_IFANY=`echo "${TRACK}" | ${BASE64} --decode | $JQ -r '.Format_Commercial_IfAny'`
[[ "$TRACK_FORMAT_COMMERCIAL_IFANY" =~ Atmos|DTS:X ]] && TRACK_OBJFORMAT=1 || TRACK_OBJFORMAT=0
if [ "$TRACK_LAYOUT" = "null" ] && [ "$TRACK_CHANNELS" = "null" ]; then
TRACK_LAYOUT=`echo "${TRACK}" | ${BASE64} --decode | $JQ -r '.ChannelLayout_Original'`
TRACK_CHANNELS=`echo "${TRACK}" | ${BASE64} --decode | $JQ -r '.Channels_Original'`
fi
TRACK_META="${TRACK_NUMBER},${TRACK_CODEC},${TRACK_BITRATE},${TRACK_CHANNELS},${TRACK_LAYOUT},${TRACK_FORMAT},${TRACK_COMPMODE},${TRACK_OBJFORMAT}${NL}"
AUDIO_TRACK_META="${AUDIO_TRACK_META}${TRACK_META}"
done
IFS="$O_IFS"
AUDIO_TRACK_META=`echo "$AUDIO_TRACK_META" | sed 's/^$//g'`
if [ $DEBUG ]; then
echo
echo "Input Audio Tracks"
echo "------------------"
echo "Track,Codec,BitRate,Channels,Layout,Format,CompMode,ObjFormat${NL}${AUDIO_TRACK_META}" | column -t -s, -o " | "
echo
fi
AUDIO=${CODEC}
case "${AUDIO}" in
flac)
while read -r i; do
IFS=, read -r TRACK_NUMBER TRACK_CODEC TRACK_BITRATE TRACK_CHANNELS TRACK_LAYOUT TRACK_FORMAT TRACK_COMPMODE<<< $( echo "$i" )
if [[ $FORCE_LOSSY ]] || [[ "$TRACK_COMPMODE" =~ "Lossless" ]] || [[ "$TRACK_FORMAT" =~ "PCM" ]] && [[ "$TRACK_FORMAT" != "FLAC" ]]; then
FLAC_FLAGS="-c:a:${TRACK_NUMBER} flac $FLAC_FLAGS"
OUTPUT_TRACK_META="${OUTPUT_TRACK_META}${TRACK_NUMBER},flac,${TRACK_BITRATE},${TRACK_LAYOUT},n/a${NL}"
else
FLAC_FLAGS="-c:a:${TRACK_NUMBER} copy $FLAC_FLAGS"
OUTPUT_TRACK_META="${OUTPUT_TRACK_META}${TRACK_NUMBER},copy,${TRACK_BITRATE},${TRACK_LAYOUT},n/a${NL}"
fi
done < <(echo "$AUDIO_TRACK_META")
echo "Output Audio Tracks"
echo "------------------"
echo "Track,Codec,BitRate,Channels,Layout${NL}${OUTPUT_TRACK_META}" | column -t -s, -o " | "
echo
unset IFS
AUDIO_FLAGS="$AUDIO_FLAGS ${FLAC_FLAGS:0:-1}";;
opus)
while read -r i; do
IFS=, read -r TRACK_NUMBER TRACK_CODEC TRACK_BITRATE TRACK_CHANNELS TRACK_LAYOUT TRACK_FORMAT TRACK_COMPMODE TRACK_OBJFORMAT<<< $( echo "$i" )
TRACK_NUMBER=`echo "$TRACK_NUMBER - 1" | ${BC}`
if ([[ $FORCE_LOSSY ]] || [[ "$TRACK_COMPMODE" =~ "Lossless" ]] || [[ "$TRACK_FORMAT" =~ "PCM" ]]) && [ $TRACK_OBJFORMAT -eq 0 ]; then
BR=$(echo "$TRACK_LAYOUT" | ${SED} -e 's~Rss\|Lss\|Rsr\|Lsr\|Rb\|Lb\|Rs\|Ls\|Rw\|Lw\|LFE~64~g' -e 's~Cb\|C\|Cs\|M\|L\|Lt\|R\|Rt~128~g' | ${TR} -s ' ' '+' | ${BC})
if [ $BR -eq 0 ]; then
case $TRACK_CHANNELS in
8|7) BR=704;;
6|5) BR=576;;
4) BR=512;;
3) BR=384;;
2) BR=256;;
1) BR=128;;
*) BR=576;;
esac
fi
TRACK_BITRATE="${BR}k"
#TRACK_FLAGS="-ab:${TRACK_NUMBER} ${TRACK_BITRATE} -metadata:${TRACK_NUMBER} title=\"Opus from ${TRACK_CODEC}\" "
TRACK_FLAGS="-codec:a:${TRACK_NUMBER} libopus -filter:a:${TRACK_NUMBER} aformat=channel_layouts='7.1|5.1|stereo|mono' -b:a:${TRACK_NUMBER} ${TRACK_BITRATE} "
OPUS_FLAGS="${OPUS_FLAGS}${TRACK_FLAGS}"
OUTPUT_TRACK_META="${OUTPUT_TRACK_META}${TRACK_NUMBER},opus,${TRACK_BITRATE},${TRACK_CHANNELS},${TRACK_LAYOUT}${NL}"
else
OPUS_FLAGS="-c:a:${TRACK_NUMBER} copy $OPUS_FLAGS"
OUTPUT_TRACK_META="${OUTPUT_TRACK_META}${TRACK_NUMBER},copy,${TRACK_BITRATE},${TRACK_CHANNELS},${TRACK_LAYOUT}${NL}"
fi
done < <(echo "$AUDIO_TRACK_META")
echo "Output Audio Tracks"
echo "------------------"
echo "Track,Codec,BitRate,Channels,Layout${NL}${OUTPUT_TRACK_META}" | column -t -s, -o " | "
echo
unset IFS
AUDIO_FLAGS="$AUDIO_FLAGS ${OPUS_FLAGS:0:-1}"
;;
aac)
while read -r i; do
IFS=, read -r TRACK_NUMBER TRACK_CODEC TRACK_BITRATE TRACK_CHANNELS TRACK_LAYOUT TRACK_FORMAT TRACK_COMPMODE TRACK_OBJFORMAT<<< $( echo "$i" )
TRACK_NUMBER=`echo "$TRACK_NUMBER - 1" | ${BC}`
if ([[ $FORCE_LOSSY ]] || [[ "$TRACK_COMPMODE" =~ "Lossless" ]] || [[ "$TRACK_FORMAT" =~ "PCM" ]]) && [ $TRACK_OBJFORMAT -eq 0 ]; then
BR=$(echo "$TRACK_LAYOUT" | ${SED} -e 's~Rss\|Lss\|Rsr\|Lsr\|Rb\|Lb\|Rs\|Ls\|Rw\|Lw\|LFE~64~g' -e 's~Cb\|C\|Cs\|M\|L\|Lt\|R\|Rt~128~g' | ${TR} -s ' ' '+' | ${BC})
if [ $BR -eq 0 ]; then
case $TRACK_CHANNELS in
8|7) BR=704;;
6|5) BR=576;;
4) BR=512;;
3) BR=384;;
2) BR=256;;
1) BR=128;;
*) BR=576;;
esac
fi
TRACK_BITRATE="${BR}k"
#TRACK_FLAGS="-ab:${TRACK_NUMBER} ${TRACK_BITRATE} -metadata:${TRACK_NUMBER} title=\"Opus from ${TRACK_CODEC}\" "
TRACK_FLAGS="-c:a:${TRACK_NUMBER} libfdk_aac -b:a:${TRACK_NUMBER} ${TRACK_BITRATE} "
AAC_FLAGS="${AAC_FLAGS}${TRACK_FLAGS}"
OUTPUT_TRACK_META="${OUTPUT_TRACK_META}${TRACK_NUMBER},aac,${TRACK_BITRATE},${TRACK_CHANNELS},${TRACK_LAYOUT}${NL}"
else
AAC_FLAGS="-c:a:${TRACK_NUMBER} copy $AAC_FLAGS"
OUTPUT_TRACK_META="${OUTPUT_TRACK_META}${TRACK_NUMBER},copy,${TRACK_BITRATE},${TRACK_CHANNELS},${TRACK_LAYOUT}${NL}"
fi
done < <(echo "$AUDIO_TRACK_META")
echo "Output Audio Tracks"
echo "------------------"
echo "Track,Codec,BitRate,Channels,Layout${NL}${OUTPUT_TRACK_META}" | column -t -s, -o " | "
echo
unset IFS
AUDIO_FLAGS="$AUDIO_FLAGS ${AAC_FLAGS:0:-1}"
;;
*)
echo "Unknown codec: ${AUDIO}"
exit 1;;
esac
if [ $NOVIDEO ]; then
DEFAULT_FLAGS="-map 0 -map -0:d -map -0:v ${AUDIO_FLAGS} -c:s copy -max_muxing_queue_size 9999"
else
DEFAULT_FLAGS="-map 0 -map -0:d -c:v copy ${AUDIO_FLAGS} -c:s copy -max_muxing_queue_size 9999"
fi
if [ $DEBUG ]; then
echo "COMMANDS:"
echo "nice -n 4 $FFMPEG -i \"$INPUT\" $DEFAULT_FLAGS \"$OUTPUT\""
echo "$MKVPROPEDIT --add-track-statistics-tags \"$OUTPUT\""
#exit
read -p "Press y to encode, any other key to exit..." confirm
case $confirm in
[Yy] ) continue;;
* ) exit;;
esac
fi
nice -n 5 $FFMPEG -i "$INPUT" $DEFAULT_FLAGS "$OUTPUT"
$MKVPROPEDIT --add-track-statistics-tags "$OUTPUT"