transcribe.sh

#!/bin/bash

# First install whisper.cpp:
#   xcode-select --install # if necessary
#   git clone https://github.com/ggerganov/whisper.cpp.git
#   cd whisper.cpp && make && cd models && bash ./download-ggml-model.sh small
# Next, install ffmpeg if necessary (`brew install ffmpeg`)

if [[ ! -f $1 ]]; then
    echo "$1 is not a file."
    exit 1
fi

# Convert to 16-bit, 16kHz WAV if necessary
wav_file=$1
stream_info=$(ffprobe -v error -show_entries stream=codec_name,sample_rate -of default=noprint_wrappers=1:nokey=1 $wav_file)
if [ "$stream_info" != "pcm_s16le 16000" ]; then
  ffmpeg -y -i $1 -ar 16000 $1.wav
  wav_file=$1.wav
fi

~/Code/whisper.cpp/main -m ~/Code/whisper.cpp/models/ggml-small.bin --output-txt -f $wav_file