mirror of
https://github.com/lrenaud/burnSubs.git
synced 2025-06-17 04:40:34 -07:00
v0.9
This commit is contained in:
Luke Renaud
commit
bd87bacacb
1 changed files with 553 additions and 0 deletions
553
burnSubs
Executable file
553
burnSubs
Executable file
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@ -0,0 +1,553 @@
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#!/bin/bash
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set -e
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set -o nounset
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set -o errexit
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################################################################################
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# burnSubs
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# version 0.9.1
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#################3
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# Wishlist:
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# queue encodes
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# finish TODOs
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# list subtitles flag
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# finish help flag
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# audio recode flag
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################################################################################
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function machineSetup() {
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# Default setup
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export FF_ENC="libx264"
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export FF_HW=""
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export FILT_PFX=""
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export FILT_SFX=""
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CRF=${OPTS_CRF:-23}
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export FF_STD="-preset myTranscoderPreset -crf $CRF -tune animation \
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-preset medium -movflags +faststart"
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export FF_EXT="-profile:v high -level 4.0"
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# Handle the time limit argument used for testing if it was passed
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if [[ "${OPTS_TIMELIMIT}" != "null" ]]; then
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export LIM_TIME="-t ${OPTS_TIMELIMIT}"
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else
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export LIM_TIME=""
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fi
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# The default extraProc function. This should be overridden by each encoder
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# as required. For example, to set bitrate after a video has been parsed.
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function extraProc() {
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return
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}
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# Use the machine hostname to set the default encoding options based upon
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# my preferences.
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echo "Machine identification:"
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if [[ "${OPTS_FORCESOFT}" == "true" ]]; then
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echo " > Hostname: $(hostname)"
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export OPTS_ENC="allsoft"
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else
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if [[ "$(hostname)" == "Kusanagi" ]]; then
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echo " > Hostname: 草薙素子"
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export OPTS_ENC="nvidia"
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echo "FIX FFMPEG!"
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#export FFMPEG="/opt/ffmpeg-nvenc/bin/ffmpeg"
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export LD_LIBRARY_PATH="/opt/ffmpeg-nvenc/lib"
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export FF_EXT="${FF_EXT} -pix_fmt yuv420p"
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elif [[ "$(hostname)" == "grad-heo-lappy" ]]; then
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echo " > Hostname: $(hostname)"
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export OPTS_ENC="vaapi"
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else
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echo " > Hostname: $(hostname)"
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export OPTS_ENC="allsoft"
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export FF_EXT="${FF_EXT} -pix_fmt yuv420p"
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fi
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fi
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# Configure audio filtergraph if needed.
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if [[ "${OPTS_TRANS_AUDIO}" == true ]]; then
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FILT_AUDIO="-c:a aac"
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if [[ "${OPTS_LPF_AUDIO}" == true ]]; then
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FILT_AUDIO="-filter:a highpass=f=7 ${FILT_AUDIO}"
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fi
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if [[ "$(hostname)" == "Ram-the-Red" ]]; then
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FILT_AUDIO="${FILT_AUDIO} -strict -2"
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fi
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else
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FILT_AUDIO="-c:a copy"
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fi
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# Configure the encoder based upon the specific encoder chain required
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## NVIDIA GPU Encode/Decode
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if [[ "$OPTS_ENC" == "nvidia" ]]; then
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echo " > Using nVidia Encoder"
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echo " >>> full hardware"
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# NVIDIA GPU encoding options
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export FF_ENC="h264_nvenc"
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# Assuming h264 input video
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# TODO: Handle non h264 input streams
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#export FF_HW="-hwaccel cuvid -c:v h264_cuvid"
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#export FF_HW="-hwaccel cuvid"
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# Frame count lookahead
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export FF_EXT="${FF_EXT} -rc-lookahead 30"
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## Intel CPU Encode/Decode
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elif [[ "$OPTS_ENC" == "vaapi" ]]; then
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echo " > Using VAAPI."
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# apt install libvdpau-va-gl1
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#export FF_BIN="/opt/ffmpeg/bin/ffmpeg"
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# Full hardware
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if [[ "${OPTS_FORCEPARTSOFT}" == "false" ]]; then
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echo " >>> full hardware"
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# Full hardware decode/encode
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export FF_HW="-hwaccel vaapi -hwaccel_device \
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/dev/dri/renderD128 -hwaccel_output_format vaapi"
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export FF_ENC="h264_vaapi"
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export FILT_PFX="scale_vaapi,hwmap=mode=read+write+direct,format=nv12,"
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export FILT_SFX=",hwmap"
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# Override the extra options used for this encoder
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export FF_EXT="-profile:v 100 -level 40"
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# Mixed software hardware
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else
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echo " >>> hardware decode"
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echo " > software encode"
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# software encode, hardware decode only
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export FF_HW="-hwaccel vaapi -hwaccel_device /dev/dri/renderD128"
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fi
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|
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# Disable this shit
|
||||
# set the bitrate based upon the old video size.
|
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if [[ $(false) ]]; then
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function extraProc() {
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||||
echo -n " > determine video size: "
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LEN_COMPLEX=$("$JQ" '.streams[0].tags.DURATION' \
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"${STREAMS_ALL}" | tr -d '"')
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LEN_SECONDS=$("$DATE" -u +'%s' -d "1970-01-01 $LEN_COMPLEX")
|
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# shellcheck disable=SC2016
|
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VIDEO_SIZE_KBYTES=$("$FFPROBE" -select_streams v -show_entries \
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packet=size -of default=nokey=1:noprint_wrappers=1 \
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-i "${INPUT_VIDEO}" | "$AWK" '{s+=$1} END {print s/1024.0}')
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KBITRATE=$("$PYTHON3" -c \
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"print('%.0f' % (1.0*8.0*$VIDEO_SIZE_KBYTES/$LEN_SECONDS))")
|
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export FF_EXT="-b:v ${KBITRATE}K "
|
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}
|
||||
fi
|
||||
# Full Software encoding/decoding. No hardware assistance.
|
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else
|
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echo " > Using default full software chain."
|
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fi
|
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sleep 1
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echo "====> Starting <===="
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}
|
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|
||||
function setupBins() {
|
||||
# The first argument is the "default" binary name, and the second
|
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# is the variable where that binary's path is stored. Using *export* to
|
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# override the variable before "setupBins" is called will let you specify
|
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# a specific instance of the binary to use instead.
|
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setAndValidateBin "ffmpeg" "FFMPEG"
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setAndValidateBin "ffprobe" "FFPROBE"
|
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setAndValidateBin "jq" "JQ"
|
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setAndValidateBin "python3" "PYTHON3"
|
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setAndValidateBin "awk" "AWK"
|
||||
setAndValidateBin "date" "DATE"
|
||||
}
|
||||
|
||||
# Used by the above function to evaluate overrides if they are set, and
|
||||
# otherwise to simply return the existing binary as an absolute path.
|
||||
function setAndValidateBin() {
|
||||
binaryVariable="$2"
|
||||
# shellcheck disable=SC2086
|
||||
eval binaryCurrentValue="\${$binaryVariable:-}"
|
||||
if [[ "" == "$binaryCurrentValue" ]]; then
|
||||
binaryCurrentValue="$1"
|
||||
fi
|
||||
|
||||
# Try to extract the results of the current binary as an absolute path
|
||||
binaryCurrentValue=$(readlink -f "$(which "$binaryCurrentValue")") || /bin/true
|
||||
# And fail if we don't have it
|
||||
if [[ ! -x "$binaryCurrentValue" ]]; then
|
||||
echo "ERROR: Required binary '$1' not found."
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exit
|
||||
fi
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||||
|
||||
# shellcheck disable=SC2086
|
||||
eval export $binaryVariable="$binaryCurrentValue"
|
||||
}
|
||||
|
||||
# The fall back cleanup function to remove the shit in temp. Set to trap in
|
||||
# the setup temp function further on.
|
||||
function doCleanup() {
|
||||
# On eject return to where we started, and frag the cleanup directory
|
||||
cd "$WD"
|
||||
if [[ "$OPTS_DEBUG" == "false" ]]; then
|
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echo "=> Cleaning up."
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||||
rm -r "$TMP"
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||||
else
|
||||
echo "tmp dir: $TMP"
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fi
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alertUser
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}
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||||
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||||
# All we do is note that we'll have to move around, and this helps us keep our
|
||||
# bearings and avoid polluting the working directory.
|
||||
function setupTemp() {
|
||||
echo "=> Performing Setup:"
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||||
# The FFMPEG calls require all of the files to actually exist on disk. To
|
||||
# accommodate this, we setup a temporary working directory to dump the files
|
||||
# and we will remove it's contents when things are done. This provides a
|
||||
# location for the font files to be placed, as well as a location for the
|
||||
# raw subtitles files.
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||||
trap doCleanup EXIT
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||||
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||||
export WD="$PWD"
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||||
export TMP=$(mktemp -d /tmp/transFont.XXXX)
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||||
}
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||||
|
||||
function dumpFonts() {
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||||
# Dumb font dump
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||||
cd "$FONTDIR"
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"$FFMPEG" -dump_attachment:t "" -i "${INPUT_VIDEO}" -vn -an \
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-f null /dev/null 2>/dev/null || /bin/true
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cd "$WD"
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}
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||||
|
||||
function setupFonts() {
|
||||
echo " > setting up fonts..."
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||||
# Simply setup an encode specific font configuration setup. This will direct
|
||||
# the system to use any font files that we have provided in $TMP/font_files
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||||
# then fall back to the system configuration afterwards.
|
||||
export FONTDIR="${TMP}/font_files"
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||||
FC_DIR="${TMP}/fontconfig"
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||||
FC_FILE="${FC_DIR}/fonts.conf"
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||||
mkdir "${FONTDIR}"
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||||
mkdir "${FC_DIR}"
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||||
{
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||||
echo '<?xml version="1.0"?>';
|
||||
echo '<!DOCTYPE fontconfig SYSTEM "fonts.dtd">';
|
||||
echo '<fontconfig>';
|
||||
echo ' <dir>'"${FONTDIR}"'</dir>';
|
||||
echo ' <include>/etc/fonts/fonts.conf</include>';
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||||
echo '</fontconfig>'
|
||||
} > "${FC_FILE}"
|
||||
# This export line presents the configuration override to FFMPEG later on.
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||||
export FONTCONFIG_FILE="${FC_FILE}"
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dumpFonts
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}
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||||
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||||
function setupPreset() {
|
||||
echo " > setting up preset..."
|
||||
# The preset system provides a way to specify specific encoding options.
|
||||
# This can easily be removed as desired.
|
||||
presetName="$1"
|
||||
# And include the ffmpeg preset
|
||||
export FFMPEG_DATADIR="${TMP}/ffmpeg"
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||||
FFMPEG_PRESET_FILE="${FFMPEG_DATADIR}/${FF_ENC}-${presetName}.preset"
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||||
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mkdir "${FFMPEG_DATADIR}"
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||||
{
|
||||
# This preset is for the roku
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||||
echo 'coder=1'
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||||
echo 'flags=+loop'
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||||
echo 'cmp=+chroma'
|
||||
echo 'partitions=+parti8x8+parti4x4+partp8x8+partb8x8'
|
||||
echo 'me_method=umh'
|
||||
echo 'subq=8'
|
||||
echo 'me_range=16'
|
||||
echo 'g=250'
|
||||
echo 'keyint_min=25'
|
||||
echo 'sc_threshold=40'
|
||||
echo 'i_qfactor=0.71'
|
||||
echo 'b_strategy=2'
|
||||
echo 'qcomp=0.6'
|
||||
echo 'qmin=10'
|
||||
echo 'qmax=51'
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||||
echo 'qdiff=4'
|
||||
echo 'bf=4'
|
||||
echo 'refs=4'
|
||||
echo 'directpred=3'
|
||||
echo 'trellis=1'
|
||||
echo 'flags2=+wpred+mixed_refs+dct8x8+fastpskip'
|
||||
} > "${FFMPEG_PRESET_FILE}"
|
||||
}
|
||||
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||||
function parseStreams() {
|
||||
# Most MKV files will only have a single subtitle file. In the case we have
|
||||
# multiple subtitles we wish to handle conversion gracefully. To do so, we
|
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# extract all of the track information (the first ffprobe call), then use
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# the json parsing tool jq to extract subtitle data for styled subtitles.
|
||||
#
|
||||
#
|
||||
STREAMS_ALL="${TMP}/streams.json"
|
||||
export STREAMS_SUB="${TMP}/subs.json"
|
||||
"$FFPROBE" -v error -of json -show_streams "${INPUT_VIDEO}" 2>/dev/null > "${STREAMS_ALL}"
|
||||
|
||||
# Extract subtitles
|
||||
#$item.codec_type == "subtitle" \&\&
|
||||
# shellcheck disable=SC2016
|
||||
"$JQ" 'reduce .streams[] as $item ([]; if ($item.codec_name == "ass") then [.[],$item] else . end) | reduce .[] as $item ([]; [.[],{t:($item.tags.title),i:($item.index),lang:$item.tags.language, disposition:$item.disposition}]) | reduce .[] as $item ([]; [.[],{t:($item.t // ($item.lang + "-" + ($item.i | tostring))),i:$item.i,lang:$item.lang,disposition:$item.disposition}])' "${STREAMS_ALL}" > "${STREAMS_SUB}"
|
||||
export SUB_COUNT=$("$JQ" 'length' "${STREAMS_SUB}")
|
||||
|
||||
}
|
||||
|
||||
function listSubtitles() {
|
||||
# TODO:
|
||||
return
|
||||
}
|
||||
|
||||
function selectSubs() {
|
||||
# TODO: handle multiple subtitle files
|
||||
# TODO: verify the the subtitle index is legal
|
||||
if [[ $SUB_COUNT -eq 0 ]]; then
|
||||
echo " > ERROR: No subtitles! Todo!"
|
||||
export SUBTITLE_INDEX=-1
|
||||
elif [[ $SUB_COUNT -eq 1 ]]; then
|
||||
export SUBTITLE_INDEX=$($JQ '.[].i' "$STREAMS_SUB")
|
||||
SUBTITLE_NAME=$($JQ '.[].t' "$STREAMS_SUB")
|
||||
echo " > subtitles: [${SUBTITLE_INDEX}] ${SUBTITLE_NAME}"
|
||||
else
|
||||
echo " > ERROR: Multiple subtitles! Todo!"
|
||||
export SUBTITLE_INDEX=-1
|
||||
fi
|
||||
}
|
||||
|
||||
|
||||
function extractSubs() {
|
||||
echo " > extracting subtitles"
|
||||
export SUBTITLE_FILE="${TMP}/ripped.ass"
|
||||
extractIndex="$1"
|
||||
"$FFMPEG" -i "${INPUT_VIDEO}" -map 0:"${extractIndex}" -vn -an -c:s copy -c:a copy \
|
||||
"$SUBTITLE_FILE" 2>/dev/null
|
||||
|
||||
}
|
||||
|
||||
function doTranscode() {
|
||||
echo "=> Starting transcode:"
|
||||
# shellcheck disable=SC2086
|
||||
echo "$FFMPEG" ${FF_HW} -i "${INPUT_VIDEO}" -sn ${LIM_TIME} \
|
||||
-filter:v "${FILT_PFX}ass=${SUBTITLE_FILE}${FILT_SFX}" \
|
||||
${FILT_AUDIO} -c:v "${FF_ENC}" ${FF_STD} ${FF_EXT} \
|
||||
"${OUTPUT_VIDEO}"
|
||||
if [[ "$OPTS_DRYRUN" == true ]]; then
|
||||
return
|
||||
fi
|
||||
# shellcheck disable=SC2086
|
||||
"$FFMPEG" ${FF_HW} -i "${INPUT_VIDEO}" -sn ${LIM_TIME} \
|
||||
-filter:v "${FILT_PFX}ass=${SUBTITLE_FILE}${FILT_SFX}" \
|
||||
${FILT_AUDIO} -c:v "${FF_ENC}" ${FF_STD} ${FF_EXT} \
|
||||
"${OUTPUT_VIDEO}"
|
||||
export FINAL_STATUS=$?
|
||||
}
|
||||
|
||||
function runExtraProc() {
|
||||
if [[ "$FF_ENC" == "$1" ]]; then
|
||||
extraProc
|
||||
fi
|
||||
}
|
||||
|
||||
|
||||
function klobberCheck() {
|
||||
if [[ -e "${OUTPUT_VIDEO}" ]]; then
|
||||
if [[ "$OPTS_KLOBBER" == "true" ]]; then
|
||||
echo " > klobbering old file '${OUTPUT_VIDEO}'"
|
||||
rm -v "${OUTPUT_VIDEO}"
|
||||
else
|
||||
echo " > refusing to klobber old file '${OUTPUT_VIDEO}'"
|
||||
exit 1
|
||||
fi
|
||||
fi
|
||||
}
|
||||
|
||||
function alertUser() {
|
||||
# if the function isn't available, then define an empty function to
|
||||
# reject the message into the void
|
||||
if ! which notify-send >/dev/null; then
|
||||
function notify-send() { return; }
|
||||
fi
|
||||
|
||||
if [[ $FINAL_STATUS -ne 0 ]]; then
|
||||
notify-send -u normal --icon error "🗙 Transcode failed!" \
|
||||
"$(basename "${INPUT_VIDEO}")\n🞩🞩🞩🞩🞩\n$(basename "${OUTPUT_VIDEO}")"
|
||||
else
|
||||
notify-send -u normal --icon ${NOTIFY_ICON} "✔ Transcode finished" \
|
||||
"$(basename "${INPUT_VIDEO}")\n↓↓↓↓↓\n$(basename "${OUTPUT_VIDEO}")"
|
||||
fi
|
||||
}
|
||||
|
||||
|
||||
# And verify arguments
|
||||
######
|
||||
# Defaults
|
||||
OPTS_KLOBBER=false
|
||||
OPTS_LISTSUBS=false
|
||||
OPTS_SELSUB=-1
|
||||
OPTS_LISTSUBS=false
|
||||
OPTS_FORCESOFT=false
|
||||
OPTS_FORCEPARTSOFT=false
|
||||
OPTS_ENC="allsoft"
|
||||
OPTS_TIMELIMIT=null
|
||||
OPTS_DRYRUN=false
|
||||
OPTS_DEBUG=false
|
||||
OPTS_LPF_AUDIO=false
|
||||
OPTS_TRANS_AUDIO=false
|
||||
unset OPT_CRF
|
||||
# this is the --icon flag passed to notify-send at the end of the transcode
|
||||
NOTIFY_ICON="face-tired"
|
||||
# preinitalized final ffmpeg status to assumed error
|
||||
FINAL_STATUS=1
|
||||
|
||||
### Argument Parsing
|
||||
# Input/Output videos (non-flagged arguments)
|
||||
# optional:
|
||||
# -k do clobber output
|
||||
# -s # subtitle track
|
||||
# -l list subtitle tracks of input files
|
||||
# --soft force software encoder
|
||||
# -d debug, don't cleanup
|
||||
###
|
||||
|
||||
|
||||
######
|
||||
# Reformat and organize the input strings
|
||||
OPT_STRING=$(getopt -o 'hkls:dt:' --long 'help,psoft,soft,dry,crf:,audio,audiofix' -- "$@")
|
||||
# reassign them as positional arguments
|
||||
eval set -- "$OPT_STRING"
|
||||
|
||||
while true; do
|
||||
case "$1" in
|
||||
"-t")
|
||||
OPTS_TIMELIMIT="$2"
|
||||
echo ">> !! limiting encode to time '$OPTS_TIMELIMIT'"
|
||||
shift 2
|
||||
continue
|
||||
;;
|
||||
"-k")
|
||||
OPTS_KLOBBER=true
|
||||
echo ">> !! klobber when encoding time comes."
|
||||
shift
|
||||
continue
|
||||
;;
|
||||
"-l")
|
||||
OPTS_LISTSUBS=true
|
||||
echo ">> !! list subtitles and exit"
|
||||
shift
|
||||
continue
|
||||
;;
|
||||
"-s")
|
||||
OPTS_SELSUB="$2"
|
||||
#TODO: verify legal subtitle track number convention"
|
||||
echo "TODO: verify legal subtitle track number convention"
|
||||
echo ">> !! Selecting subtitle track #${OPTS_SELSUB}"
|
||||
shift 2
|
||||
continue
|
||||
;;
|
||||
"--psoft")
|
||||
OPTS_FORCEPARTSOFT=true
|
||||
echo ">> !! forcing software encoding."
|
||||
shift
|
||||
continue
|
||||
;;
|
||||
"--audio")
|
||||
OPTS_LPF_AUDIO=true
|
||||
OPTS_TRANS_AUDIO=true
|
||||
echo ">> !! low pass filter audio to AAC."
|
||||
shift
|
||||
continue
|
||||
;;
|
||||
"--audiofix")
|
||||
OPTS_TRANS_AUDIO=true
|
||||
echo ">> !! no filter audio to AAC."
|
||||
shift
|
||||
continue
|
||||
;;
|
||||
"--soft")
|
||||
OPTS_FORCESOFT=true
|
||||
echo ">> !! forcing software decoding/encoding."
|
||||
shift
|
||||
continue
|
||||
;;
|
||||
"--crf")
|
||||
OPTS_CRF="$2"
|
||||
echo ">> !! CRF Override CRF='$OPTS_CRF'"
|
||||
shift 2
|
||||
continue
|
||||
;;
|
||||
"-d")
|
||||
OPTS_DEBUG=true
|
||||
echo ">> !! debug enabled."
|
||||
echo ">> temp files will not be cleaned up."
|
||||
shift
|
||||
continue
|
||||
;;
|
||||
"--dry")
|
||||
OPTS_DRYRUN=true
|
||||
echo ">> !! dry run. No encode."
|
||||
shift
|
||||
continue
|
||||
;;
|
||||
"--")
|
||||
shift # all arguments parsed
|
||||
break
|
||||
;;
|
||||
"-h" | "--help")
|
||||
# TODO: Display help
|
||||
shift # all arguments parsed
|
||||
echo "TODO: HELP!" # Display HELP
|
||||
exit
|
||||
;;
|
||||
*)
|
||||
echo "Arg: $1"
|
||||
echo "Internal Error!" >&2
|
||||
exit
|
||||
;;
|
||||
esac
|
||||
done
|
||||
|
||||
# Now parse POSITIONAL ARGUMENTS
|
||||
if [[ $# -ne 2 ]]; then
|
||||
echo "ERROR: Incorrect number of positional arguments. Expected 2, got $#"
|
||||
echo " $0 [args] <input> <output>"
|
||||
exit
|
||||
else
|
||||
INPUT_VIDEO="$(readlink -f "$1")"
|
||||
OUTPUT_VIDEO="$2"
|
||||
fi
|
||||
|
||||
###############
|
||||
# Configure the encoder based upon the hostname
|
||||
machineSetup
|
||||
|
||||
###############
|
||||
# Check and validate the binaries we use to parse and setup the encoding chain
|
||||
setupBins
|
||||
# Setup the temp space for working files
|
||||
setupTemp
|
||||
# Extract embedded fonts and configure fontconfig
|
||||
setupFonts
|
||||
# Export the preset file used for the Roku
|
||||
setupPreset myTranscoderPreset
|
||||
|
||||
###############
|
||||
# Parse stream data to identify subtitles
|
||||
parseStreams
|
||||
# Now! If OPTS_LISTSUBS is defined, then we branch to list subs and exit.
|
||||
if [[ "$OPTS_LISTSUBS" == "true" ]]; then
|
||||
listSubtitles
|
||||
exit
|
||||
fi
|
||||
# ask the user for the subtitle file if more than one is available
|
||||
selectSubs
|
||||
# extract the selected subtitle file
|
||||
extractSubs $SUBTITLE_INDEX
|
||||
# Set the bitrate if that function wasn't disabled
|
||||
runExtraProc "h264_vaapi"
|
||||
|
||||
# If we're clobbering, now is the time to do the clobbering
|
||||
klobberCheck
|
||||
# Kickoff the transcode
|
||||
doTranscode
|
||||
|
||||
# cleanup automatically executes after the done message is cleared
|
||||
echo "done."
|
||||
Loading…
Add table
Add a link
Reference in a new issue