mirror of
https://github.com/levogevo/ffmpeg-av1-builder.git
synced 2026-01-15 16:56:18 +00:00
80 lines
2.3 KiB
Bash
Executable File
80 lines
2.3 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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echo ffmpeg -i \""$INPUT"\" -map 0 \
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-af '"aformat=channel_layouts=7.1|5.1|stereo|mono"' -c:a libopus $(get_bitrate_audio "$INPUT") \
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-c:s copy -c:V libsvtav1 -pix_fmt yuv420p10le -crf 25 -preset 3 -g 240 \
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-svtav1-params \"tune=0:enable-overlays=1:scd=1:enable-hdr=1:fast-decode=1:enable-variance-boost=1\" \
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\""$OUTPUT"\" > /tmp/encode.sh
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if [[ "$PRINT_OUT" == "true" ]];
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then
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cat /tmp/encode.sh
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else
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bash /tmp/encode.sh
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fi
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}
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unmap_streams(){
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INPUT="$1"
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num_video_streams=$(ffprobe -v error -select_streams v -show_entries stream=index -of csv=p=0 "$INPUT" | wc -l)
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for ((i = 0; i < num_video_streams; i++)); do
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ffprobe -v error -select_streams "v:$i" -of default=noprint_wrappers=1:nokey=1 "$INPUT"
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ffprobe -select_streams "v:0" -of default=noprint_wrappers=1:nokey=1 'first_20_DN.mkv'
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ffprobe -v error -select_streams v -show_entries stream=index:stream_tags=type -of csv=p=0 'first_20_DN.mkv'
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done
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echo "$num_video_streams"
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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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# between only 1-4 arguments
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test "$#" -eq 0 && usage && exit 1
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test "$#" -gt 4 && usage && exit 1
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while getopts "i:p" 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 [[ "$PRINT_OUT" == "true" && "$#" -eq 4 ]];
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then
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OUTPUT="${@: -1}"
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else
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OUTPUT="${HOME}/av1_${INPUT}"
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fi
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encode
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# encode "$@"
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# unmap_streams "$@"
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