mirror of
https://github.com/levogevo/ffmpeg-av1-builder.git
synced 2026-01-15 16:56:18 +00:00
265 lines
9.1 KiB
Bash
Executable File
265 lines
9.1 KiB
Bash
Executable File
#!/bin/bash
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# this is simply my recommended encoding method.
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# do not take this as a holy grail.
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# global path variables
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SCRIPT_PATH="$(readlink -f "${BASH_SOURCE[0]}")"
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SCRIPT_DIR="$(dirname "$SCRIPT_PATH")"
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BUILDER_DIR="$(dirname "$SCRIPT_DIR")"
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usage() {
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echo "encode -i input_file [-p] [-c] [-s] [-v] [-g NUM] [output_file_name] [-I] [-U] "
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echo -e "\t-p print the command instead of executing it"
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echo -e "\t-c use cropdetect"
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echo -e "\t-s use same container as input, default is mkv"
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echo -e "\t-g set film grain for encode"
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echo -e "\t-v Print relevant version info"
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echo -e "\n\toutput_file_name if not set, will create at $HOME/\n"
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echo -e "\t-I Install this as /usr/local/bin/encode"
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echo -e "\t-U Uninstall this from /usr/local/bin/encode"
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return 0
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}
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get_duration() {
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ffmpeg -i "$1" 2>&1 | grep "Duration" | awk '{print $2}' | tr -d ,
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}
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get_crop() {
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DURATION="$(get_duration "$INPUT")"
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TOTAL_SECONDS="$(echo "$DURATION" | awk -F: '{ print ($1 * 3600) + ($2 * 60) + $3 }')"
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# get cropdetect value for first 1/5 of input
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TIME_ENC="$(echo "$TOTAL_SECONDS / 5" | bc)"
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ffmpeg -hide_banner -ss 0 -discard 'nokey' -i "$INPUT" -t "$TIME_ENC" \
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-map '0:v:0' -filter:v:0 'cropdetect=limit=64:round=16:skip=2:reset_count=0' \
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-codec:v 'wrapped_avframe' -f 'null' '/dev/null' -y 2>&1 | grep -o crop=.* \
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| sort -bh | uniq -c | sort -bh | tail -n1 | grep -o "crop=.*"
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}
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unmap_streams(){
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INPUT="$1"
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UNMAP_FILTER="bin_data|jpeg|png"
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UNMAP_STREAMS=$(ffprobe "$INPUT" 2>&1 | grep "Stream" | grep -Ei "$UNMAP_FILTER" | cut -d':' -f2 | cut -d'[' -f1 | tr '\n' ' ')
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UNMAP_CMD=""
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for UNMAP_STREAM in $UNMAP_STREAMS; do
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UNMAP_CMD+="-map -0:$UNMAP_STREAM "
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done
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echo "$UNMAP_CMD"
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}
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get_bitrate_audio() {
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BITRATE_CMD=""
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NUM_AUDIO_STREAMS=$(ffprobe -v error -select_streams a -show_entries stream=index -of csv=p=0 "$INPUT" | wc -l)
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for ((i = 0; i < NUM_AUDIO_STREAMS; i++)); do
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NUM_CHANNELS=$(ffprobe -v error -select_streams "a:$i" -show_entries stream=channels -of default=noprint_wrappers=1:nokey=1 "$INPUT")
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BITRATE=$((NUM_CHANNELS * 64))
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BITRATE_CMD+="-b:a:$i ${BITRATE}k "
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done
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echo "$BITRATE_CMD"
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}
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convert_subs() {
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SUB_CONVERT_CMD=""
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NUM_SUBTITLE_STREAMS=$(ffprobe -v error -select_streams s -show_entries stream=index -of csv=p=0 "$INPUT" | wc -l)
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for ((i = 0; i < NUM_SUBTITLE_STREAMS; i++)); do
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SUBTITLE_FORMAT=$(ffprobe -v error -select_streams "s:$i" -show_entries stream=codec_name -of default=noprint_wrappers=1:nokey=1 "$INPUT")
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test "$SUBTITLE_FORMAT" == "eia_608" && SUB_CONVERT_CMD+="-c:s:$i srt "
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done
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echo "$SUB_CONVERT_CMD"
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}
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encode() {
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ENCODE_FILE="/tmp/$(basename "$OUTPUT")_encode.sh"
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echo -e '#!/bin/bash\n' > "$ENCODE_FILE"
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echo "export OUTPUT=\"$OUTPUT\"" >> "$ENCODE_FILE"
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SVT_PARAMS="${GRAIN}sharpness=3:tune=3:enable-overlays=1:scd=1:fast-decode=1:enable-variance-boost=1:enable-qm=1:qm-min=0:qm-max=15"
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echo "export SVT_PARAMS=\"$SVT_PARAMS\"" >> "$ENCODE_FILE"
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UNMAP=$(unmap_streams "$INPUT")
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echo "export UNMAP=\"$UNMAP\"" >> "$ENCODE_FILE"
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AUDIO_FORMAT='-af aformat=channel_layouts=7.1|5.1|stereo|mono -c:a libopus'
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echo "export AUDIO_FORMAT='$AUDIO_FORMAT'" >> "$ENCODE_FILE"
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AUDIO_BITRATE=$(get_bitrate_audio "$INPUT")
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echo "export AUDIO_BITRATE=\"$AUDIO_BITRATE\"" >> "$ENCODE_FILE"
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VIDEO_ENCODER="libsvtav1"
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echo "export VIDEO_ENCODER=\"$VIDEO_ENCODER\"" >> "$ENCODE_FILE"
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if [[ "$CROP" == "true" ]]; then
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VIDEO_CROP="-vf \"$(get_crop)\""
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echo "export VIDEO_CROP=\"$VIDEO_CROP\"" >> "$ENCODE_FILE"
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fi
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VIDEO_PARAMS="-pix_fmt yuv420p10le -crf 25 -preset 3 -g 240"
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echo "export VIDEO_PARAMS=\"$VIDEO_PARAMS\"" >> "$ENCODE_FILE"
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CONVERT_SUBS="$(convert_subs)"
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echo "export CONVERT_SUBS=\"$CONVERT_SUBS\"" >> "$ENCODE_FILE"
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FFMPEG_PARAMS="-y -c:s copy \$CONVERT_SUBS -c:V \$VIDEO_ENCODER \$VIDEO_PARAMS"
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echo "export FFMPEG_PARAMS=\"$FFMPEG_PARAMS\"" >> "$ENCODE_FILE"
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FFMPEG_VERSION="ffmpeg_version=$(ffmpeg -version 2>&1 | grep version | cut -d' ' -f1-3)"
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echo "export FFMPEG_VERSION=\"$FFMPEG_VERSION\"" >> "$ENCODE_FILE"
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VIDEO_ENC_VERSION="video_encoder=$(SvtAv1EncApp --version | head -n 1)"
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echo "export VIDEO_ENC_VERSION=\"$VIDEO_ENC_VERSION\"" >> "$ENCODE_FILE"
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AUDIO_ENC_VERSION="audio_encoder=$(ldd "$(which ffmpeg)" | grep -i libopus | cut -d' ' -f3 | xargs readlink)"
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AUDIO_ENC_VERSION+="-g$(cd "$BUILDER_DIR/opus" && git rev-parse --short HEAD)"
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echo "export AUDIO_ENC_VERSION=\"$AUDIO_ENC_VERSION\"" >> "$ENCODE_FILE"
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ADD_METADATA="\"encoding_params=\$VIDEO_PARAMS \$SVT_PARAMS\""
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echo "export ADD_METADATA=$ADD_METADATA" >> "$ENCODE_FILE"
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NL=' \\\n\t'
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echo >> "$ENCODE_FILE"
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echo -e ffmpeg -i \""$INPUT"\" $NL \
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-map 0 \$UNMAP \$VIDEO_CROP \
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\$AUDIO_FORMAT \$AUDIO_BITRATE $NL \
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-metadata \"\$FFMPEG_VERSION\" \
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-metadata \"\$VIDEO_ENC_VERSION\" $NL \
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-metadata \"\$AUDIO_ENC_VERSION\" \
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-metadata \"\$ADD_METADATA\" $NL \
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\$FFMPEG_PARAMS -dolbyvision 1 -svtav1-params \
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$NL \"\$SVT_PARAMS\" \"\$OUTPUT\" "||" $NL \
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ffmpeg -i \""$INPUT"\" $NL \
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-map 0 \$UNMAP \$VIDEO_CROP \
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\$AUDIO_FORMAT \$AUDIO_BITRATE $NL \
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-metadata \"\$FFMPEG_VERSION\" \
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-metadata \"\$VIDEO_ENC_VERSION\" $NL \
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-metadata \"\$AUDIO_ENC_VERSION\" \
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-metadata \"\$ADD_METADATA\" $NL \
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"\$FFMPEG_PARAMS" -svtav1-params \
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$NL "\"\$SVT_PARAMS\" \"\$OUTPUT\" || exit 1 " >> "$ENCODE_FILE"
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echo >> "$ENCODE_FILE"
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if [[ "$EXT" == "mkv" ]]; then
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echo "mkvpropedit \"$OUTPUT\" --add-track-statistics-tags" >> "$ENCODE_FILE"
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echo "mkvpropedit \"$OUTPUT\" --edit info --set \"title=\"" >> "$ENCODE_FILE"
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fi
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if [[ "$PRINT_OUT" == "true" ]];
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then
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cat "$ENCODE_FILE"
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else
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bash "$ENCODE_FILE"
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fi
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}
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OPTS='vi:pcsg:IU'
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NUM_OPTS="${#OPTS}"
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# default values
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CROP='false'
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PRINT_OUT="false"
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SAME_CONTAINER="false"
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GRAIN=""
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# only using -I/U
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MIN_OPT=1
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# using all + output name
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MAX_OPT=$(( NUM_OPTS + 1 ))
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test "$#" -lt $MIN_OPT && echo "not enough arguments" && usage && exit 1
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test "$#" -gt $MAX_OPT && echo "too many arguments" && usage && exit 1
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OPTS_USED=0
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while getopts "$OPTS" flag; do
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case "${flag}" in
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I)
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echo "attempting install"
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sudo ln -sf "$(pwd)/scripts/recc_encode.sh" \
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/usr/local/bin/encode || exit 1
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echo "succesfull install"
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exit 0
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;;
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U)
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echo "attempting uninstall"
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sudo rm /usr/local/bin/encode || exit 1
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echo "succesfull uninstall"
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exit 0
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;;
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v)
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SCRIPT_VER="$(cd "$BUILDER_DIR" && git rev-parse --short HEAD)"
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FFMPEG_VER="$(ffmpeg -version 2>&1 | head -n 1 | grep version | cut -d' ' -f1-3)"
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SVTAV1_VER="$(SvtAv1EncApp --version | head -n 1)"
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LIBOPUS_VER="$(ldd "$(which ffmpeg)" | grep -i libopus | cut -d' ' -f3 | xargs readlink)"
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LIBOPUS_VER+="-g$(cd "$BUILDER_DIR/opus" && git rev-parse --short HEAD)"
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echo "encode version: $SCRIPT_VER"
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echo "ffmpeg version: $FFMPEG_VER"
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echo "svtav1 version: $SVTAV1_VER"
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echo "libopus version: $LIBOPUS_VER"
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exit 0
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;;
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i)
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if [[ $# -lt 2 ]]; then
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echo "wrong arguments given"
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usage
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exit 1
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fi
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INPUT="${OPTARG}"
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OPTS_USED=$((OPTS_USED + 2))
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;;
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p)
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PRINT_OUT="true"
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OPTS_USED=$((OPTS_USED + 1))
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;;
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c)
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CROP="true"
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OPTS_USED=$((OPTS_USED + 1))
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;;
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s)
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SAME_CONTAINER="true"
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OPTS_USED=$((OPTS_USED + 1))
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;;
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g)
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if [[ ${OPTARG} != ?(-)+([[:digit:]]) || ${OPTARG} -lt 0 ]]; then
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echo "${OPTARG} is not a positive integer"
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usage
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exit 1
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fi
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GRAIN="film-grain=${OPTARG}:film-grain-denoise=1:adaptive-film-grain=1:"
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OPTS_USED=$((OPTS_USED + 2))
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;;
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*)
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echo "wrong flags given"
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usage
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exit 1
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;;
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esac
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done
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# allow optional output filename
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if [[ $(($# - OPTS_USED)) == 1 ]]; then
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OUTPUT="${*: -1}"
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else
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OUTPUT="${HOME}/av1_${INPUT}"
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fi
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# use same container for output
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if [[ "$SAME_CONTAINER" == "true" ]]; then
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INP_FORMAT="$(mediainfo --Output="General;%Format%" "$INPUT")"
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EXT=""
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if [[ "$INP_FORMAT" == 'MPEG-4' ]]; then
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EXT='mp4'
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elif [[ "$INP_FORMAT" == 'Matroska' ]]; then
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EXT='mkv'
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else
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echo "unrecognized input format"
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exit 1
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fi
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OUTPUT="${OUTPUT%.*}"
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OUTPUT+=".${EXT}"
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else
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EXT="mkv"
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OUTPUT="${OUTPUT%.*}"
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OUTPUT+=".${EXT}"
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fi
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echo
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echo "INPUT: $INPUT, PRINT_OUT: $PRINT_OUT, GRAIN: $GRAIN, OUTPUT: $OUTPUT"
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echo
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encode
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