aud2txt 0.5.0

Audio to text tool using ggerganov's whisper.cpp
Documentation 
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#! /bin/bash
### Normalilze an audio file to the supported format.

set -e

FFMPEG_AUDIO_CHANNELS=1
FFMPEG_AUDIO_RATE=16000  # Sampling frequency in Hz.
FFMPEG_CODEC='pcm_s16le' # PCM signed 16-bit little-endian
FFMPEG_OPT_OVERWRITE_EXISTING_OUTPUT_FILE='-y'
FFMPEG_OUTPUT_FILE_FORMAT='wav'

## https://ffmpeg.org/ffmpeg.html#Stream-specifiers-1
## stream_type :=
##   | v | V # video
##   | a     # audio
##   | s     # subtitle
##   | d     # data
##   | t     # attachments
FFMPEG_STREAM_TYPE='a'

main() {
    local -r input_file_path="$1"
    local -r output_file_path="$2"

    # XXX Arg order matters!
    ffmpeg \
        "$FFMPEG_OPT_OVERWRITE_EXISTING_OUTPUT_FILE" \
        -i "$input_file_path" \
        -ar:"$FFMPEG_STREAM_TYPE" "$FFMPEG_AUDIO_RATE" \
        -ac:"$FFMPEG_STREAM_TYPE" "$FFMPEG_AUDIO_CHANNELS" \
        -codec:"$FFMPEG_STREAM_TYPE" "$FFMPEG_CODEC" \
        -f "$FFMPEG_OUTPUT_FILE_FORMAT" \
        "$output_file_path"
}

main "$@"