mirror of
https://github.com/levogevo/ffmpeg-av1-builder.git
synced 2026-01-15 16:56:18 +00:00
104 lines
2.8 KiB
Bash
Executable File
104 lines
2.8 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 "unrecognized arguments, please retry"
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echo "encode -i input_file [-p] output_file"
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echo -e "\t-p print the command instead of executing [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="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"'
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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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echo ffmpeg -i \""$INPUT"\" -map 0 $UNMAP \
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$AUDIO_FORMAT -c:a libopus $AUDIO_BITRATE \
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"$FFMPEG_PARAMS" -dolbyvision 1 -svtav1-params \
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"\"$SVT_PARAMS\" \"$OUTPUT\" ||" \
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ffmpeg -i \""$INPUT"\" -map 0 $UNMAP \
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$AUDIO_FORMAT -c:a libopus $AUDIO_BITRATE \
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"$FFMPEG_PARAMS" -svtav1-params \
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"\"$SVT_PARAMS\" \"$OUTPUT\"" > "$ENCODE_FILE"
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echo "mkvpropedit \"$OUTPUT\" --add-track-statistics-tags" >> "$ENCODE_FILE"
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if [[ "$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'
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NUM_OPTS=$(echo $OPTS | tr ':' '\n' | wc -l)
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PRINT_OUT="false"
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MIN_OPT=2
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MAX_OPT=4
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test "$#" -lt $MIN_OPT && usage && exit 1
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test "$#" -gt $MAX_OPT && usage && exit 1
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while getopts "$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="true"
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;;
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*)
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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 [[ "$#" -eq $MAX_OPT ]]; then
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OUTPUT="${@: -1}"
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elif [[
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("$PRINT_OUT" == "true") &&
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( "$#" -eq 3)
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]]; then
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OUTPUT="${HOME}/av1_${INPUT}"
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elif [[ "$#" -eq 2 ]]; then
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OUTPUT="${HOME}/av1_${INPUT}"
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else
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OUTPUT="${@: -1}"
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fi
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echo
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echo "INPUT: $INPUT, PRINT_OUT: $PRINT_OUT, OUTPUT: $OUTPUT"
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echo
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encode
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