tc-video-generic: WIP
Pierre Neidhardt
parent
e089b4d41d
commit
7d556955f1
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@ -2,11 +2,6 @@
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## TODO: handle srt encoding.
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if [ -z "$(command -v ffmpeg)" ]; then
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echo "ffmpeg required."
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exit
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fi
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_printhelp()
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{
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cat <<EOF
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@ -16,15 +11,22 @@ Transcode FILES or files found in FOLDERS to .mkv with x264 and ogg. Black
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stripes are *not* cropped by default since it may be sometimes
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inaccurate. Output files are the same as the original, with time appended.
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Options:
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-b: Default bitrate for audio stream with unidentifiable bitrate. If 0,
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copy stream (default).
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-c: Copy streams (no reencoding).
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-C: Enable auto-crop.
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-C: Enable auto-crop (needs video reencoding).
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-f: Remove source when done.
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-h: Display this help.
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-o OPT: Additional options.
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-p: Preview changes, do not encode.
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-s: Sample of 5 minutes.
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-S MIN: Sample of MIN minutes.
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-t: Remove all "title" metadata.
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User options are read from variable TC_VIDEO_OPT. This can be useful if you
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always use the same options.
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Examples:
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* Exchange stream 1 an 2 by first removing them, then reading them in the
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@ -40,17 +42,11 @@ EOF
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}
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SAMPLE=""
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# USER_OPT="" ## Can use environment value.
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VIDEO_FILTER=""
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VIDEO_CODEC="-c:v libx264 -preset slow -crf 20"
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## WARNING: we mix down audio to 2 channels with '-ac 2'. This greatly reduce
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## file size and avoid any confusion for playback, which is often the case when
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## converting DTS to any other format because DTS has embedded channel
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## description which is not available in these formats.
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AUDIO_FILTER="-ac 2"
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pVIDEO_FILTER=""
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VIDEO_PARAM="-c:v libx264 -preset slow -crf 20"
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AUDIO_PARAM=""
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AUDIO_CODEC="libvorbis"
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AUDIO_DEFAULT_RATE="192"
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AUDIO_DEFAULT_RATE=0
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## What to do if file exists:
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# -y overwrite
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@ -60,12 +56,15 @@ OPT_OVERWRITE=false
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OPT_REMOVE_TITLE=false
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OPT_CROP=false
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OPT_PREVIEW=false
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while getopts ":cCfho:sS:t" opt; do
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while getopts ":b:cCfho:psS:t" opt; do
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case $opt in
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b)
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AUDIO_DEFAULT_RATE=$OPTARG ;;
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c)
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VIDEO_CODEC="-c:v copy"
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AUDIO_CODEC="-c:a copy" ;;
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VIDEO_PARAM="-c:v copy"
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AUDIO_PARAM="-c:a copy" ;;
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C)
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OPT_CROP=true;;
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f)
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@ -75,7 +74,9 @@ while getopts ":cCfho:sS:t" opt; do
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_printhelp "$0"
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exit 1 ;;
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o)
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USER_OPT="$OPTARG" ;;
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TC_VIDEO_OPT="$OPTARG" ;;
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p)
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OPT_PREVIEW=true ;;
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s)
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SAMPLE="-ss 60 -t 360" ;;
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S)
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@ -100,10 +101,10 @@ if [ $# -eq 0 ]; then
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exit
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fi
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## Zsh compatibility. We need it otherwise word splitting of parameter like
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## SAMPLE will not work.
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STATUS="$(set -o | grep 'shwordsplit' | awk '{print $2}')"
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[ "$STATUS" = "off" ] && set -o shwordsplit
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if [ -z "$(command -v ffmpeg)" ]; then
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echo "ffmpeg required."
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exit
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fi
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_duration()
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{
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@ -136,18 +137,19 @@ _audiobitrate()
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## value.
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## Case1: copy streams
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if [ ! -n "$(command -v mediainfo)" ]; then
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mediainfo "$1" | awk -v codec="$AUDIO_CODEC" 'BEGIN {id=0} /^Audio/ { getline; while(getline && ! index($0,"Bit rate ")); if($4) printf "-c:a:" id " " codec " -b:a:" id " " $4 "k " ; else printf "-c:a:" id " copy "; id++} END {print ""}'
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else
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ffmpeg -i "$1" 2>&1 </dev/null | awk -v codec="$AUDIO_CODEC" 'BEGIN {id=0} /^ *Stream.*Audio/ {match($0, / [^ ]+ kb\/s/); res=substr($0, RSTART+1, RLENGTH-6); if(res) printf "-c:a:" id " " codec " -b:a:" id " " res "k " ; else printf "-c:a:" id " copy "; id++} END {print ""}'
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fi
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# if [ ! -n "$(command -v mediainfo)" ]; then
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# mediainfo "$1" | awk -v codec="$AUDIO_CODEC" 'BEGIN {id=0} /^Audio/ { getline; while(getline && ! index($0,"Bit rate ")); if($4) printf "-c:a:" id " " codec " -b:a:" id " " $4 "k " ; else printf "-c:a:" id " copy "; id++} END {print ""}'
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# else
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# ffmpeg -i "$1" 2>&1 </dev/null | awk -v codec="$AUDIO_CODEC" 'BEGIN {id=0} /^ *Stream.*Audio/ {match($0, / [^ ]+ kb\/s/); res=substr($0, RSTART+1, RLENGTH-6); if(res) printf "-c:a:" id " " codec " -b:a:" id " " res "k " ; else printf "-c:a:" id " copy "; id++} END {print ""}'
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# fi
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## TODO: merge two cases, use default value when not 0, copy otherwise.
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## Case2: encode to default
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if [ ! -n "$(command -v mediainfo)" ]; then
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mediainfo "$1" | awk -v codec="$AUDIO_CODEC" -v bitrate="$AUDIO_DEFAULT_RATE" 'BEGIN {id=0} /^Audio/ { getline; while(getline && ! index($0,"Bit rate ")); if($4) printf "-c:a:" id " " codec " -b:a:" id " " $4 "k " ; else printf "-c:a:" id " copy "; id++} END {print ""}'
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else
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ffmpeg -i "$1" 2>&1 </dev/null | awk -v codec="$AUDIO_CODEC" -v bitrate="$AUDIO_DEFAULT_RATE" 'BEGIN {id=0} /^ *Stream.*Audio/ {match($0, / [^ ]+ kb\/s/); res=substr($0, RSTART+1, RLENGTH-6); if(res) printf "-c:a:" id " " codec " -b:a:" id " " res "k " ; else printf "-c:a:" id " " codec " -b:a:" id " " bitrate "k "; id++} END {print ""}'
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ffmpeg -i "$1" 2>&1 </dev/null | awk -v codec="$AUDIO_CODEC" -v bitrate="$AUDIO_DEFAULT_RATE" 'BEGIN {id=0} /^ *Stream.*Audio/ {match($0, / [^ ]+ kb\/s/); res=substr($0, RSTART+1, RLENGTH-6); if(res) printf "-c:a:" id " " codec " -b:a:" id " " res "k " ; else if (bitrate > 0) printf "-c:a:" id " " codec " -b:a:" id " " bitrate "k "; else printf "-c:a:" id " copy "; id++} END {print ""}'
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fi
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@ -186,29 +188,52 @@ _tc_transcode()
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VIDEO_FILTER="-vf $(_cropvalue "$1")"
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fi
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AUDIO_BITRATE="$(_audiobitrate "$1")"
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## WARNING: we mix down audio to 2 channels with '-ac 2'. This greatly reduce
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## file size and avoid any confusion for playback, which is often the case when
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## converting DTS to any other format because DTS has embedded channel
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## description which is not available in these formats.
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# AUDIO_FILTER="-ac 2"
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## If AUDIO_FILTER is already set, it means that we copy.
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if [ -z "$AUDIO_PARAM" ]; then
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AUDIO_PARAM="$(_audiobitrate "$1") -ac 2"
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fi
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cat<<EOF
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================================================================================
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User options: ${USER_OPT:-None}
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Sample: ${SAMPLE:-No}
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Clear 'Title': $OPT_REMOVE_TITLE
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User options: ${TC_VIDEO_OPT:-none}
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Sample: ${SAMPLE:-no}
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Clear tags: $OPT_REMOVE_TITLE
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In place: $OPT_OVERWRITE
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Crop: $OPT_CROP
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Video param: $VIDEO_PARAM
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Video filter: $VIDEO_FILTER
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Audio bitrate: $AUDIO_BITRATE
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Audio filter: $AUDIO_FILTER
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Audio param: $AUDIO_PARAM
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================================================================================
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EOF
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exit
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$OPT_PREVIEW && exit
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OUTPUT="${1%.*}-$(date '+%F-%H%M%S').mkv"
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## Zsh compatibility. We need it otherwise word splitting of parameter like
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## SAMPLE will not work.
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STATUS="$(set -o | grep 'shwordsplit' | awk '{print $2}')"
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[ "$STATUS" = "off" ] && set -o shwordsplit
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ffmpeg $OVERWRITE -i "$1" \
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$VIDEO_CODEC $VIDEO_FILTER \
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$AUDIO_CODEC $AUDIO_BITRATE $AUDIO_FILTER \
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$VIDEO_PARAM $VIDEO_FILTER \
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$AUDIO_PARAM \
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-c:s copy \
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-map 0 $STREAM_TITLE \
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$SAMPLE $USER_OPT "$OUTPUT" </dev/null
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$SAMPLE $TC_VIDEO_OPT "$OUTPUT" </dev/null
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## Restore Zsh previous options. This will not turn off shwordsplit if it
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## was on before calling the function.
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[ "$STATUS" = "off" ] && set +o shwordsplit
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if $OPT_OVERWRITE; then
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rm -f "$1"
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@ -244,7 +269,3 @@ EOF
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fi
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done
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## Restore Zsh previous options. This will not turn off shwordsplit if it
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## was on before calling the function.
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[ "$STATUS" = "off" ] && set +o shwordsplit
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