mirror of
https://github.com/levogevo/ffmpeg-av1-builder.git
synced 2026-01-15 16:56:18 +00:00
124 lines
3.7 KiB
Bash
Executable File
124 lines
3.7 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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usage() {
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echo "encode -i input_file [-p true/false] [-g NUM] output_file"
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echo -e "\t-p print the command instead of executing it [optional]"
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echo -e "\t-g set film grain for encode [optional]"
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return 0
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}
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encode() {
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ENCODE_FILE="/tmp/encode.sh"
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SVT_PARAMS="${GRAIN}tune=0:enable-overlays=1:scd=1:enable-hdr=1:fast-decode=1:enable-variance-boost=1:enable-qm=1:qm-min=0:qm-max=15"
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UNMAP=$(unmap_streams "$INPUT")
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AUDIO_FORMAT='-af "aformat=channel_layouts=7.1|5.1|stereo|mono" -c:a libopus'
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AUDIO_BITRATE=$(get_bitrate_audio "$INPUT")
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FFMPEG_PARAMS='-y -c:s copy -c:V libsvtav1 -pix_fmt yuv420p10le -crf 25 -preset 3 -g 240'
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NL=' \\\n\t'
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echo '#!/bin/bash' > "$ENCODE_FILE"
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echo -e ffmpeg -i \""$INPUT"\" -map 0 $UNMAP \
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$AUDIO_FORMAT $NL $AUDIO_BITRATE \
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"$FFMPEG_PARAMS" -dolbyvision 1 -svtav1-params \
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$NL "\"$SVT_PARAMS\" \"$OUTPUT\" ||" $NL \
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ffmpeg -i \""$INPUT"\" -map 0 $UNMAP \
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$AUDIO_FORMAT $NL $AUDIO_BITRATE \
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"$FFMPEG_PARAMS" -svtav1-params \
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$NL "\"$SVT_PARAMS\" \"$OUTPUT\"" >> "$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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unmap_streams(){
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INPUT="$1"
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UNMAP_FILTER="jpeg|png"
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UNMAP_STREAMS=$(ffprobe "$INPUT" 2>&1 | grep "Stream" | grep -Ei "$UNMAP_FILTER" | cut -d':' -f2 | 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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OPTS='i:p:g:'
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NUM_OPTS=$(echo $OPTS | tr ':' '\n' | wc -l)
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PRINT_OUT="false"
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GRAIN=""
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# only using -i
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MIN_OPT=2
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# using all + output name
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MAX_OPT=$(( NUM_OPTS * 2 - 1 ))
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test "$#" -lt $MIN_OPT && echo "not enough arguments" && usage && exit 1
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test "$#" -gt $MAX_OPT && echo "too many arguments" && usage && exit 1
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while getopts "$OPTS" flag; do
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case "${flag}" in
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i)
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INPUT="${OPTARG}"
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;;
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p)
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PRINT_OUT="${OPTARG}"
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if [[ "$PRINT_OUT" != "false" && "$PRINT_OUT" != "true" ]]; then
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echo "unrecognized argument for -p: $PRINT_OUT"
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usage
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exit 1
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fi
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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:"
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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 [[ $(($# % 2)) != 0 ]]; then
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OUTPUT="${@: -1}"
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else
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OUTPUT="${HOME}/av1_${INPUT}"
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fi
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# always use same container for output
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INP_FILENAME=$(basename -- "$INPUT")
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EXT="${INP_FILENAME##*.}"
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OUTPUT="${OUTPUT%.*}"
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OUTPUT+=".${EXT}"
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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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