Add subtitles to a video using whisper.cpp and ffmpeg. (./main is the whisper.cpp main binary.) https://github.com/ggerganov/whisper.cpp

add-subtitles.sh

#!/bin/bash

echo "Converting audio"
rm -f temp.wav
ffmpeg -i "$1" -ar 16000 -ac 1 -c:a pcm_s16le temp.wav
echo "Transcribing"
./main -m models/ggml-base.en.bin -f ./temp.wav --output-srt
echo "Adding to video file"
ffmpeg -i "$1" -i temp.wav.srt -c copy -metadata:s:s:0 language=eng "${1%.*}.subtitled.mkv"