Generating Spanish subtitles for a bunch of mp4 files on a folder (works for any language)

subtitles.sh

# install mac whisper
brew install python3 ffmpeg
pip install setuptools-rust
pip install -U openai-whisper

# create a script to extract audio and translate
for f in *.mp4; do FILE=`basename -s '.mp4' "$f"`; echo ffmpeg -i "\"$f\"" -vn -acodec copy "\"$FILE.aac\"" >> script.sh; done
for f in *.mp4; do FILE=`basename -s '.mp4' "$f"`; echo whisper "\"$FILE.aac\"" --language Spanish --model medium --task transcribe >> script.sh; done

# run the script. on M1 max this is several times slower than the audio being translated
./script.sh