paracoder_commands_OPUS.yml

defaults:
  # https://docs.spring.io/spring-boot/docs/current/reference/htmlsingle/#features.external-config.files.property-placeholders

  bitrate: "192"
  # https://wiki.hydrogenaud.io/index.php?title=Bitrate#Equivalent_bitrate_estimates_for_multichannel_audio
  # The following function gives you a weight w for each cc, where cc is the channel configuration written as a decimal number (1.0 for mono, 2.0 for stereo, 5.1 for surround, etc.):
  # w(cc) = cc^0.75
  # For 5.1 multichannel audio equivalent bitrate is 192 * w(5.1)/w(2.0) = 192 * (5.1/2.0)^0.75 = 387 kbps (~384 kbps)

  ffmpeg: "\"c:\\Rip\\ffmpeg\\bin\\ffmpeg.exe\" -hide_banner -loglevel error -nostats -nostdin"
  ffmpeg_Librempeg: "\"c:\\Rip\\FFMPEG (Librempeg)\\ffmpeg.exe\" -hide_banner -loglevel error -nostats -nostdin"
  opus: "\"c:\\Rip\\opus-tools\\opusenc.exe\" --quiet --music --vbr"


pattern:
  fileExtensions:
    - flac
    - m4a
    - wav
    - ape
    - dts
    - wv
    - w64 
    - aiff
    - cue


  commandTemplate:
    flac: >-
      ${defaults.opus} --bitrate ${defaults.bitrate:192} "{{F}}" "{{D}}{{P}}{{N}}.opus"
    wav: >-
      ${defaults.opus} --bitrate ${defaults.bitrate:192} "{{F}}" "{{D}}{{P}}{{N}}.opus"

    # FFMPEG can't write attached pictures into OPUS. Therefore, we can try to extract it to external file.
    # -f lavfi -i nullsrc=s=128x128  --- Creates an additional dummy video stream
    # -map 0:v?  --- Use first input video stream if exists. When this stream is not exists then second dummy video stream will be used.
    # -c:v png -update 1 -frames:v 1 -y   --- Extract video stream to file using PNG codec. Update file on every new frame. Use only first frame. Overwrite file if it already exists.
    #      ${defaults.ffmpeg} -i "{{F}}" -f lavfi -i nullsrc=s=128x128 -map 0:v? -c:v png -update 1 -frames:v 1 -y "{{D}}{{P}}Cover_ffmpeg.png" -map 0:a -c:a copy -map_metadata 0:s:0 -ss {{CUE_ST}} -to {{CUE_ET}} {{CUE_METADATA}} "{{D}}{{P}}{{CUE_NUM}}. {{CUE_TITLE}}.opus"
    #
    # using -map_metadata 0:s:a:0, which copies metadata from the first input file (0:), first audio stream (s:a:0) (where the metadata is) to all output files (global metadata).
    cue_opus: >-
      ${defaults.ffmpeg} -i "{{F}}" -c:a copy -map_chapters -1 -map_metadata 0:s:a -ss {{CUE_ST}} -to {{CUE_ET}} {{CUE_METADATA}} "{{D}}{{P}}{{CUE_NUM}}. {{CUE_TITLE}}.opus"

    cue_mp3: >-
      ${defaults.ffmpeg} -i "{{F}}" -c copy -ss {{CUE_ST}} -to {{CUE_ET}} {{CUE_METADATA}} "{{D}}{{P}}{{CUE_NUM}}. {{CUE_ARTIST}} - {{CUE_TITLE}}.mp3"

    cue_m2ts: >-
      ${defaults.ffmpeg} -i "{{F}}" -vn -map 0:a:0 -af "channelmap=channel_layout=5.1, aresample=48000:resampler=soxr:precision=30" -c:a libopus -b:a 384k -mapping_family 1 -ss {{CUE_ST}} -to {{CUE_ET}} {{CUE_METADATA}} "{{D}}{{P}}{{CUE_NUM}}. {{CUE_TITLE}}.opus"

#    cue_m2ts: >-
#      ${defaults.ffmpeg} -i "{{F}}" -vn -map 0:a:0 -c:a flac -ss {{CUE_ST}} -to {{CUE_ET}} {{CUE_METADATA}} -f flac - | ${defaults.opus} --bitrate 384 - "{{D}}{{P}}{{CUE_NUM}}. {{CUE_TITLE}}.opus"

    cue_any: >-
      ${defaults.ffmpeg_Librempeg} -ss {{CUE_ST}} -to {{CUE_ET}} -i "{{F}}" -c:v copy -af "asf2sf=dblp, ardftsrc=48000:quality=65536:bandwidth=0.95" -c:a flac -sample_fmt s32 -compression_level 3 -map_metadata 0:s:a -map_metadata 0 {{CUE_METADATA}} -metadata "ENCODER_OPTIONS=ARDFTSRC=48000:quality=65536:bandwidth=0.95" -f flac - | ${defaults.opus} --bitrate ${defaults.bitrate:192} - "{{D}}{{P}}{{CUE_NUM}}. {{CUE_TITLE}}.opus"

    any: >-
      ${defaults.ffmpeg_Librempeg} -i "{{F}}" -c:v copy -af "asf2sf=dblp, ardftsrc=48000:quality=65536:bandwidth=0.95" -c:a flac -sample_fmt s32 -compression_level 3 -map_metadata 0:s:a -map_metadata 0 -metadata "ENCODER_OPTIONS=ARDFTSRC=48000:quality=65536:bandwidth=0.95" -f flac - | ${defaults.opus} --bitrate ${defaults.bitrate:192} - "{{D}}{{P}}{{N}}.opus"